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ge data&-heet january 30, 2014 ?2013 general elec tric company. all rights reserved. CP2725AC54TE compact power line high ef ficiency rectifier 100-120/200-277v ac input; default outputs: 54v dc @ 2725w, 5v dc @ 4w features ? efficiency 96.2% ? compact 1ru form factor with 30 w/in 3 density ? constant power from 52 ? 58v dc ? 2725w from nominal 200 ? 277v ac ? 1200w from nominal 100 ? 120v ac ? output voltage programmable from 42v ? 58v dc ? pmbus compliant dual i 2 c and rs485 serial busses ? isolated +5v aux, signals and i 2 c communications ? power factor correction (meets en/iec 61000-3-2 and en 60555-2 requirements) ? output overvoltage and overload protection ? ac input overvoltage and undervoltage protection ? over-temperature warning and protection ? redundant, parallel operation with active load sharing ? remote on/off ? internally controlled variable-speed fan ? hot insertion/removal (hot plug) ? four front panel led indicators ? ul* recognized to ul60950-1, can/ csa ? c22.2 no. 60950-1, and vde ? 0805-1 licensed to iec60950-1 ? ce mark meets 2006/95/ec directive ? rohs 6 compliant applications ? 48v dc distributed power architectures ? routers/switches ? voip/soft switches ? lan/wan/man applications ? file servers ? indoor wireless ? telecommunications equipment ? enterprise networks ? san/ng-/iscsi applications description the CP2725AC54TE rectifier provides significant efficiency improvements in the compact power line platform of rectifiers. high- density front-to-back airflow is designed for minimal space utilization and is highly expandable for future growth. the wide-in put standard product is designed to be deployed internationally. it is configured with both rs485 and dual-redundant i 2 c communications busses that allow it to be used in a broad range of applications. these signals and the 5v auxiliary supply are isolated from the main output and frame ground. feature set flexibility makes this rectifier an excellent choice for applicatio ns requiring modular ac to - 48v dc intermediate voltages, such as in distributed power. * ul is a registered trademark of underwriters laboratories, inc. ? csa is a registered trademark of canadian standards association. ? vde is a trademark of verband deutscher elektrotechniker e.v. this product is intended for integration into end-user equipment. all ce marking procedures of end-user equipment should be followed. (the ce mark is placed on selected products.) ** iso is a registered trademark of the international organization of standards + the pmbus name and logo are registered trademarks of the system management interface forum (smif) rohs com p liant
ge data sheet CP2725AC54TE cpl hi g h efficienc y rectifier 100-120/200-277v ac input; default outputs: 54v dc @ 2725w, 5v dc @ 4w january 30, 2014 ?2013 general electric company. all rights reserved. page 2 absolute maximum ratings stresses in excess of the absolute maximum ratings can cause permanent damage to the device. these are absolute stress ratings only, functional operation of the device is not implied at these or any other conditions in excess of those given in the operat ions sections of the data sheet. exposure to absolute maximum ratings for extended periods can adversely affect the device reliabili ty. parameter symbol min max unit input voltage: continuous vin 0 300 v ac operating ambient temperature ta -10 75 1 c storage temperature tstg -40 85 c i/o isolation voltage to frame (100% factory hi-pot tested) 1500 v ac electrical specifications unless otherwise indicated, specifications apply over all operating input voltage, vo=54v dc , resistive load, and temperature conditions. input parameter symbol min typ max unit startup input voltage low-line operation high-line operation v in 90 185 v ac operating voltage range low-line configuration high-line configuration v in 90 185 100 ? 120 200 - 277 140 300 v ac input voltage swell (no damage) 305 input frequency f in 47 66 hz input current; at 110v ac at 240v ac i in 11.9 13.1 a ac inrush transient (at 25c, excluding x-capacitor charging) i in 25 30 a pk idle power (at 220v ac ) 54v off 54v on @ io=0 p in 8.2 16 w input leakage current (265v ac , 60hz) i in 2.5 3.5 ma power factor (50 ? 100% load) pf 0.96 0.995 efficiency 2 (30 ? 80% of fl, 240v ac @ 25 ? c) ? 94.5 96.2 % holdup time (output allowed to decay down to 40v dc ) for loads below 1200w t 20 30 ms ride thru (tested at 115v @ 230v. (complies to cispr24) t 1/2 1 cycle power fail warning 3 (main output allowed to decay to 40v dc ) pfw 3 5 ms isolation (per en60950) ( consult factory for testing to this requirement) input-chassis/signals input - output v 1500 3000 v ac v ac 1 derated above 50 ? c at 2.5%/ ? c 2 see efficiency curve in the characteristics curves section. 3 internal protection circuits may override the pfw signal and may trigger an immediate shutdown.
ge data sheet CP2725AC54TE cpl hi g h efficienc y rectifier 100-120/200-277v ac input; default outputs: 54v dc @ 2725w, 5v dc @ 4w january 30, 2014 ?2013 general electric company. all rights reserved. page 3 electrical specifications (continued) 54v dc main output parameter symbol min typ max unit output power @ low line input 100 ? 120v ac @ high line input 200 ? 277v ac @ nominal 277vac and t amb > 45 ? c w 1200 2725 2000 w dc default set point v out 54 v dc overall regulation (load, temperature, aging) 0 - 45 ? c load > 2.5a > 45 ? c -1 -2 +1 +2 % output voltage set range - analog margining - set either by i 2 c or rs485 44 42 58 58 v dc output current - @ 1200w (100 ? 120vac), 54v/52v @ 2725w (200 ? 240v ac ), 54v/52v @ 2000w ( > 277v ac @ tamb > 45 ? c), 54v/52v i out 1 1 1 25/23 50.5/52.4 37/38.4 a dc current share ( > 50% fl) -5 5 %fl proportional current share between different rectifiers ( > 50% fl) <7 %fl output ripple ( 20mhz bandwidth, load > 1a) rms (5hz to 20mhz) peak-to-peak (5hz to 20mhz) psophometric noise v out 100 300 4 9 5 mv rms mv p-p mv rms external bulk load capacitance c out 0 5,000 ? f turn-on (monotonic turn-on from 30 ? 100% of vnom above 5 ? c) delay rise time ? pmbus mode rise time - rs-485 mode 6 output overshoot t v out 5 100 5 2 s ms s % load step response ( i o,start > 2.5a ) ? i ? v, v ac ? 285 ac ? v, v ac 285 ac response time i out v out v out t 2.0 3.2 2 50 %fl v dc v dc ms overload - power limit @ high line down to 52v dc power limit%� low line down to 52v dc high line current limit if v out > 41.5v dc high line current limit if v out < 41.5v dc low line current limit output shutdown (commences as voltage decays below this level) p out p out i out v out 2725 1200 53 36 26 39 w dc w dc a dc a dc a dc v dc system power up upon insertion the power supply will delay an overload shutdown for 20 seconds allowing for the in sertion and startup of multiple modules within a system. overvoltage - 200ms delayed shutdown immediate shutdown v out > 65 < 65 v dc latched shutdown three restart attempts are implemented within a 1 minute window prior to a latched shutdown. over-temperature warning (prior to commencement of shutdown) shutdown (below the max device rating being protected) restart attempt hysteresis (below shutdown level) t 5 20 10 ? c isolation output-chassis (standard, non-poe compliant) output-chassis/signals (poe compliant per ieee802.3) v 500 2250 v dc v dc 4 500mvp-p max above 280v ac input or above 56vdc output; 5 complies with ansi ti.523-2001 section 4.9.2 emissions max limit of 20mv flat unweighted wideband noise limits 6 below -5c, the rise time is approximat ely 5 minutes to protect the bulk capacitors.
ge data sheet CP2725AC54TE cpl hi g h efficienc y rectifier 100-120/200-277v ac input; default outputs: 54v dc @ 2725w, 5v dc @ 4w january 30, 2014 ?2013 general electric company. all rights reserved. page 4 5v dc auxiliary output parameter symbol min typ max unit output voltage setpoint v out 5 v dc overall regulation -10 7 +5 % output current 0.005 0.75 a ripple and noise (20mhz bandwidth) 50 100 mv p-p over-voltage clamp 7 v dc over-current limit 110 175 %fl isolation from the main output std / poe compliant 500 / 2250 vdc isolation from frame ground 50 vdc general specifications parameter min typ max units notes reliability 450,000 hours full load, 25 ? c ; mtbf per sr232 reliability protection for electronic equipment, issue 2, method i, case iii, service life 10 years full load, excluding fans unpacked weight 2.18/4.8 kgs/lbs packed weight 2.45/5.4 kgs/lbs heat dissipation 100 watts or 341 btus @ 80% load, 153 watts or 522 btus @ 100% load feature specifications unless otherwise indicated, specifications apply over all oper ating input voltage, resistive load, and temperature conditions. signals are referenced to logic_grd unless noted otherwise. fault, pfw, otw, smbalert#, and power capacity n eed to be pulled hi through external pull -up resistors. see feature descriptions for additional information. parameter symbol min typ max unit enable (should be connected to logic_grd) 54v output off v out 1.4 ? 5 v dc 54v output on v out 0 ? 0.8 v dc margining (through adjusting vcontrol) 44 58 v dc voltage control range v control 0 3.3 v dc programmed output voltage range v out 42 58 v dc voltage adjustment resolution (8-bit a/d) v control 3.3 mv dc output configured to 54v dc v control 3.0 3. 3 v dc output configured to 44v dc v control 0 0.1 v dc on/off [short pin controls 54v dc output - ] referenced to vout( - ) 54v output off v control 1.4 ? 5 v dc 54v output on v control 0 ? 0.8 v dc module present [resistor connected to logic_grd internally] 500 ? write protect enabled v 1 ? 5 v dc write protect disabled v 0 ? 0.8 v dc over temperature warning (otw) logic hi (temperature normal) v 0.7v dd ? 12 v dc sink current i ? ? 5 ma logic lo (temperature is too high) v 0 ? 0.4 v dc fault logic hi (no fault is present) v 0.7v dd ? 12 v dc sink current i ? ? 5 ma logic lo (fault is present) v 0 ? 0.4 v dc smbalert# (alert#_0, alert#_1) logic hi (no alert - normal) v 0.7v dd ? 12 v dc sink current i ? ? 5 ma logic lo (alert is set) v 0 ? 0.4 v dc 7 within 5% when load is < 0.5a
ge data sheet CP2725AC54TE cpl hi g h efficienc y rectifier 100-120/200-277v ac input; default outputs: 54v dc @ 2725w, 5v dc @ 4w january 30, 2014 ?2013 general electric company. all rights reserved. page 5 feature specifications (continued) parameter symbol min typ max unit power capacity logic hi v 0.7v dd ? 12 v dc logic lo v 0 ? 0.4 v dc reset logic hi v 0.7v dd ? 12 v dc logic lo v 0 ? 0.4 v dc protocol select logic hi - analog/pmbus? mode v ih 2.7 ? 3.5 v dc logic ? intermediate ? rs485 mode v ii 1.0 2.65 v dc logic lo ? dsp reprogram mode v il 0 ? 0.4 v dc digital interface specifications parameter conditions symbol min typ max unit pmbus signal interface characteristics input logic high voltage (clk, data) v 1.5 3.6 v dc input logic low voltage (clk, data) v 0 0.8 v dc input high sourced current (clk, data) i 0 10 a output low sink voltage (clk, data, smbalert#) i out =3.5ma v 0.4 v dc output low sink current (clk, data, smbalert#) i 3.5 ma output high open drain leakage current (clk,data, smbalert#) v out =3.6v i 0 10 a pmbus operating frequency range slave mode fpmb 10 400 khz measurement system characteristii- clock stretching t stretch 25 ms i out measurement range direct i rng 0 50 8 a dc i out measurement accuracy 25c i out(acc) -2.5 +2.5 % of fl v out measurement range direct v out(rng) 0 70 v dc v out measurement accuracy 9 v out(acc) -1 +1 % temp measurement range direct temp (rng) 0 150 ? c temp measurement accuracy 10 temp (acc) -5 +5 % v in measurement range direct v in(rng) 0 320 v ac v in measurement accuracy v in(acc) -1.5 +1.5 % p in measurement range direct p in(rng) 0 3000 w in p in measurement accuracy 11 p in(acc) -3.5 +3.5 % fan speed measurement range direct 0 30k rpm fan speed measurement accuracy -10 10 % fan speed control range direct 0 100 % device addressing unit address [reference: v out ( - )] module 1 v unitadr 2.3 2.477 3.3 v dc module 2 v unitadr 1.6 1.925 2.2 v dc module 3 v unitadr 0.9 1.243 1.5 v dc module 4 v unitadr 0 0.654 0.8 v dc shelf address [reference: v out ( - )] shelf 1 v shelfadr 3.0 3.3 3.45 v dc shelf 2 v shelfadr 2.7 2.86 2.97 v dc shelf 3 v shelfadr 2.18 2.4 2.56 v dc shelf 4 v shelfadr 1.73 1.96 2.14 v dc shelf 5 v shelfadr 1.29 1.50 1.70 v dc shelf 6 v shelfadr 0.84 1.10 1.25 v dc shelf 7 v shelfadr 0.30 0.60 0.80 v dc shelf 8 v shelfadr 0 0.01 0.25 v dc 8 load levels higher than 50a will be read as 50a. 9 above 2.5a of load current 10 temperature accuracy reduces non- linearly with decreasing temperature 11 below 100w input power measuremen t accuracy reduce s significantly
ge data sheet CP2725AC54TE cpl hi g h efficienc y rectifier 100-120/200-277v ac input; default outputs: 54v dc @ 2725w, 5v dc @ 4w january 30, 2014 ?2013 general electric company. all rights reserved. page 6 environmental specifications parameter min typ max units notes ambient temperature -40 12 55 13 c air inlet from sea level to 5,000 feet. storage temperature -40 85 c operating altitude 1524/5000 m / ft non-operating altitude 8200/30k m / ft power derating with temperature 2.0 %/c 55c to 75 ? c 14 power derating with altitude 2.0 ? c/305 m ? c/1000 ft above 1524/5000 m/ft; 3962/13000 m/ft max acoustic noise 55 dba full load over temperature protection 125/110 c shutdown / restart [internally measured points] humidity operating storage 5 5 95 95 % % relative humidity, non-condensing shock and vibration acceleration 6 grms nebs gr-63-core, level 3, 20 -2000hz, min 30 minutes earthquake rating 4 zone nebs gr-63-core, all floors, seismic zone 4 designed g(d tested to meet nebs specifications. emc parameter criteria standard level test ac input conducted emissions en55022, fcc docket 20780 part 15, subpart j en61000-3-2 meets telcordia gr1089-core by a 3db margin a 0.15 ? 30mhz 0 ? 2 khz radiated emissions en55022 a 30 ? 10000mhz ac input immunity line sags and interruptions en61000-4-11 b -30%, 10ms b -60%, 100ms b -100%, 5sec output will stay above 40v dc @ full load 25% line sag for 2 seconds sag must be higher than 80vrms. 1 cycle interruption lightning surge en61000-4-5, level 4, 1.2/50s ? error free a 4kv, common mode a 2kv, differential mode ansi c62.41 - damage free a3 6kv, common & differential fast transients en61000-4-4, level 3 b 5/50ns, 2kv (common mode) enclosure immunity conducted rf fields en61000-4-6, level 3 a 130dbv, 0.15-80mhz, 80% am radiated rf fields en61000-4-3, level 3 a 10v/m, 80-1000mhz, 80% am env 50140 a esd en61000-4-2, level 3 b 6kv contact, 8kv air 12 designed to start and work at an ambient as low as -40c, but may not meet operational limits until above -5c 13 output power is derated to 2kw for temperatures higher than 45 ? c and input voltages higher than 285v ac . 14 the maximum operational ambient is reduced in europe in order to meet certain power cord ma~#mum ratings of 70 ? c. the maximum operational ambient where 70 ? c rated power cords are utilized is reduced to 60 ? c until testing demonstrates that a higher level is acceptable.
ge data sheet CP2725AC54TE cpl hi g h efficienc y rectifier 100-120/200-277v ac input; default outputs: 54v dc @ 2725w, 5v dc @ 4w january 30, 2014 ?2013 general electric company. all rights reserved. page 7 characteristic curves the following figures provide typical characteristics for the CP2725AC54TE rectifier and 25 o c. efficiency, ? (%) output voltage output current, i o (a) output current figure 1. rectifier efficiency versus output current. figure 2. 54v dc output: power limit, current limit and shutdown profile at v in = 185v ac . output voltage output power output current input voltage figure 3. 54v dc output: power limit, current limit and shutdown profile at v in = 90v ac . figure 4. 54v dc output: output power derating based on input voltage. output voltage v o (v) (200mv/div) output voltage v o (v) (20mv/div) time, t (10ms /div) time, t (10ms/div) figure 5. 54v dc output ripple and noise, full load, v in = 185v ac . figure 6. 5v dc output ripple and noise, all full load, v in = 185v ac . 80 82 84 86 88 90 92 94 96 98 0 5 10 15 20 25 30 35 40 45 50 55 vin=110v vin=240v 30 35 40 45 50 55 60 40 45 50 55 30 35 40 45 50 55 60 15 20 25 30 1000 1200 1400 1600 1800 2000 2200 2400 2600 2800 3000 120 140 160 180 200 y = 55.015vin - 6991.6 equation for derating zone tolerance: 5%
ge data sheet CP2725AC54TE cpl hi g h efficienc y rectifier 100-120/200-277v ac input; default outputs: 54v dc @ 2725w, 5v dc @ 4w january 30, 2014 ?2013 general electric company. all rights reserved. page 8 characteristic curves (continued) the following figures provide typical characteristics for the CP2725AC54TE rectifier and 25 o c. output ciurrent ou ut put voltage i o (v) (20a/div) v o (v) (1v/div) output ciurrent ou ut put voltage i o (v) (20a/div) v o (v) (1v/div) time, t (20ms/div) output current, i o (a) figure 7. transient response 54v dc load step 2.5 ? 27.2a, v in = 185v ac . figure 8. transient response 54v dc load step 27.2 ? 2.5a, v in = 185v ac . output voltage v o (v) (200mv/div) output voltage v o (v) (10v/div) time, t (50ms/div) time, t (2s/div) figure 9. 54v dc soft start, no-load & full load, vin=185v ac - i 2 c mode. figure 10. 54v dc soft start, full load, v in = 185v ac - rs485 mode. input voltage ouutput voltage N v in (v) (100v/div) v o (v) (10v/div) pfw signal ouutput voltage v pfw (v) (5v/div) v o (v) (10v/div) time, t (10ms/div) time, t (10ms/div) figure 11. ride through missing 1 cycle, full load, v in = 230v ac . figure 12. pfw alarmed 19.6ms prior to vo < 40v, output load: 38a, v in = 185v ac .
ge preliminary data sheet CP2725AC54TE cpl hi g h efficienc y rectifier 100-120/200-277v ac input; default outputs: 54v dc @ 2725w, 5v dc @ 4w january 30, 2014 ?2013 general electric company. all rights reserved. page 9 control and status the rectifier provides three means for monitor/control: analog, pmbus?, or the ge galaxy-based rs485 protocol. details of analog control and the pmbus? based protocol are provided in this data sheet. ge will provide separate application notes on the galaxy rs485 based protocol for users to interface to the rectifier. contact your local ge representative for details. signal reference unless otherwise noted, all signals are referenced to logic_grd. see the signal definitions table at the end of this document for further description of all the signals. logic_grd is isolated from the main output of the power supply for pmbus communications. communications and the 5v standby output are not connected to main power return (vout(-)) and can be tied to the system digital ground point selected by the user. (note that rs485 communications is referenced to vout(-), main power return of the power supply). logic_grd is capacitively coupled to frame_grd inside the power supply. the maximum voltage differential between logic_grd and frame_grd should be less than 100v dc . control signals enable: controls the main 54v dc output when either analog control or pmbus protocols are selected, as configured by the protocol pin. this pin must be pulled low to turn on the rectifier. the rectifier will turn off if either the enable or the on/off pin is released. this signal is referenced to logic_grd. in rs485 mode this pin is ignored. on/off: this is a shorter pin utilized for hot-plug applications to ensure that the rectifier turns off before the power pins are disengaged. it also ensures that the rectifier turns on only after the power pins have been engaged. must be connected to v_out ( - ) for the rectifier to be on. margining: the 54v dc output can be adjusted between 44 ? 58v dc by a control voltage on the margin pin. this control voltage can be generated either from an external voltage source, or by forming a voltage divider between 3.3v and logic_grd, as shown in fig. 13. the power supply includes the high side pull-up 10k ? resistor to 3.3v dc . connecting a resistor between the margin pin and logic_grd will complete the divider. an open circuit, or a voltage level > 3.0v dc , on this pin sets thj� main output to the factory default setting of 54v dc . hardware margining is only effective until software commanded output voltage changes are not executed. software commanded output voltage settings permanently override the hardware margin setting until power to the internal controller is interrupted, for example if input power or bias power is recycled. the controller always restarts into its default configuration, programmed to set the output as instructed by the margin pin. subsequent software commanded settings permanently override the margin pin. adding a resistor between margin and vout(-) is an ideal way of changing the factory set point of the rectifier to whatever voltage level is desired by the user. figure 13. diagram showing how output can be margined using vcontrol adjustment. module present signal: this signal has dual functionality. it can be used to alert the system when a rectifier is inserted. a 500 ? resistor is present in series between this signal and logic_grd. an external pull-up should not raise the voltage on the pin above 0.25v dc . when the voltage on this pin exceeds 1v dc , the write_protect feature of the eeprom is enabled. 8v_int: single wire connection between modules, provides bias to the dsp of an unpowered module. reset: this is a pca9541 multiplexer function utilized during pmbus communications. if momentarily grounded (logic_grd), the multiplexer would rk-et itself. protocol: establishes the communications mode of the rectifier, between analog/pmbus and rs485 modes. for rs485, connect a 10k ? pull-down resistor from this pin to v_out( - ). for analog/pmbus leave the pin open. do not tie this signal pin to v_out( - ) because that connection configures the internal dsp into a reprogrammed state. unit address: each module has an internal 10k ? resistor pulled up between unit_address and 3.3v dc . a resistor between unit_address and vout(-) sets the appropriate unit address. shelf address: by applying the required voltage between the shelf address pin and vout(-), up to 8 different shelves and so up to 32 different modules can be addressed using either the pmbus or ge galaxy based rs485 protocol. pmbus addressing is limited to a maximum of 8 modules and so the software decodes the shelf address setting into either shelf 0 or shelf 1 in pmbus applications. if more than two shelves are paralleled, the user must separate the i 2 c lines so that address conflicts do not occur. shelf_address 1 2 3 4 maximum voltage 3.45 2.97 2.56 2.14 nominal voltage 3.30 2.86 2.4 1.96 minimum voltage 3.00 2.60 2.18 1.73 address bit- a2 0 1 0 1 shelf_address 5 6 7 8 maximum voltage 1.70 1.25 0.80 0.25 nominal voltage 1.50 1.10 0.60 0.01 minimum voltage 1.29 0.84 0.30 0 address bit- a2 0 1 0 1 o u t p u t se t po i n t ( v d c ) -58 -46 0.1 3.3 vcontrol (vdc) 3.3vdc 10k vcontrol r p r o g r am -44 -54 3.0 0 inside module
ge data sheet CP2725AC54TE cpl hi g h efficienc y rectifier 100-120/200-277v ac input; default outputs: 54v dc @ 2725w, 5v dc @ 4w january 30, 2014 ?2013 general electric company. all rights reserved. page 10 status signals power capacity: a hi on this pin indicates that the rectifier delivers high line rated output power; a lo indicates that the rectifier is connected to low line configured for 1200w operation. power fail warning: this signal is hi when the main output is being delivered and goes lo for the duration listed in this data sheet prior to the output decaying below the listed voltage level. fault: this signal goes lo for any failure that requires rectifier replacement. these faults may be due to: ? fan failure ? over-temperature warning ? over-temperature shutdown ? over-voltage shutdown ? internal rectifier fault digital feature descriptions pmbus? compliance: the power supply is fully compliant to the power management bus (pmbus?) rev1.2 requirements with the following exceptions: the power supply continuously updates its status and alarm registers to the latest state in order to capture the ?present? state of the power supply. there are a number of indicators, such as those indicating a communications fault (pec error, data error) that do not get cleared until specifically instructed by the host controller sending a clear_faults command. a ?bit? indicator notifies the user if the status and alarm registers changed since the last ?read? by the host controller. for example, if a voltage surge causes a momentary shutdown for over voltage the power supply will automatically restart if the ?auto_restart? feature is invoked. during the momentary shutdown the power supply issues an alert# indicating to the system controller that a status change has occurred. if the system controller reads back the status and alarm registers while the power supply is shut down it will get the correct fault condition. however, inquiry of the state of the power supply after the restart event would indicate that the power supply is functioning correctly. the status and alarm indicators did not freeze at the original shutdown state and so the reason for the original alert# is erased. the restart ?bit? would be set to indicate that an event has occurred. the power supply also clears the status and alarm registers after a successful read back of the information in these registers, with the exception of communications error alarms. this automated process improves communications efficiency since the host controller does not have to issue another clear_faults command to clear these registers. dual, redundant buses: two independent i 2 c lines provide true communications bus rej/ndancy and allow two independent controllers to sequentially control the power supply. for example, a short or an open connection in one of the i 2 c lines does not affect communications capability on the other i 2 c line. failure of a ?master? controller does not affect the power supplies and the second ?master? can take over control at any time. using the pca9541 multiplexer: transition between the two i 2 c lines is provided by the industry standard pca9541 i 2 c master selector multiplexer. option 01 of the device code is supplied which, upon start-up, connects channel 0 to the power supply. in this fashion applications using only a single i 2 c line can immediately start talking across the bus without first requiring to reconfigure the multiplexer. figure 14. diagram showing conceptual representation of the dual i 2 c bus system. control can be taken over at any time by a specific ?master? even during data transmission to the other ?master?. the ?master? needs to be able to handle incomplete transmissions in the multi-master environment in case switching should commence in the middle of data transmission. master/slave: the ?host controller? is always the master. power supplies are always slaves. slaves cannot initiate communications or toggle the clock. slaves also must respond expeditiously at the command of the master as required by the clock pulses generated by the master. clock stretchit!: the ?slave? controller inside the power supply may initiate clock stretching if it is busy and it desires to delay the initiation of any further communications. during the clock stretch the ?slave? may keep the clock lo until it is ready to receive further instructions from the host controller. the maximum clock stretch interval is 25ms. the host controller needs to recognize this clock stretching, and refrain from issuing the next clock signal, until the clock line is released, or it needs to delay the next clock pulse beyond the clock stretch interval of the power supply. note that clock stretching can only be performed after completion of transmission of the 9 th ack bit, the exception being the start command. figure 14. example waveforms showing clock stretching. communications speed: both 100khz and 400khz clock rates are supported. the power supplies default to the 100khz clock rate. clock stretch
ge data sheet CP2725AC54TE cpl hi g h efficienc y rectifier 100-120/200-277v ac input; default outputs: 54v dc @ 2725w, 5v dc @ 4w january 30, 2014 ?2013 general electric company. all rights reserved. page 11 packet error checking: the power supply will not respond to commands without the trailing pec. the integrity of communications is compromised if packet error correction is not employed. there are many functional features, including turning off the main output, that require validation to ensure that the correct command is executed. pec is a crc-8 error-checking byte, based on the polynomial c(x) = x 8 + x 2 + x + 1, in compliance with pmbus? requirements. the calculation is based in all message bytes, including the originating write address and command bytes preceding read instructions. the pec is appended to the message by the device that supplied the last byte. smbusalert#: the power supply can issue smbalert# driven from either its internal micro controller (c) or from the pca9541 i 2 c bus master selector. that is, the smbalert# signal of the internal c funnels through the pca9541 master selector that buffers the smbalert# signal and splits the signal to the two smbalert# signal pins exiting the power supply. in addition, the pca9541 signals its own smbalert# request to either of the two smbalert# signals when required. non-supported commands: non supported commands are flagged by setting the appropriate status bit and issuing an smbalert# to the ?host? controller. data out-of-range: the power supply validates data settings and sets the data out-of-range bit and smbalert# if the data is not within acceptable range. smbalert# triggered by the c: the c driven smbalert# signal informs the ?master/host? controller that either a state or alarm change has occurred. normally this signal is hi. the signal will change to its lo level if the power supply has changed states and the signal will be latched lo until the power supply receives a ?clear? instruction as outlined below. if the alarm state is still present after the ?clear_faults? command has been received, then the signal will revert back into its lo level again and will latch until a subsequent ?clear? signal is received from the host controller. the signal will be triggered for any state change, including the following conditions; ? vin under or over voltage ? vout under or over voltage ? iout over current ? over temperature warning or fault ? fan failure ? communication error ? pec error ? invalid command ? internal faults the power supply will clear the smbusalert# signal (release the signal to its hi state) upon the following events: ? completion of a ?read_status? instruction ? receiving a clear_faults command ? the main output recycled (turned off and then on) via the enable signal pin ? the main output recycled (turned off and then on) by the operation command smbalert# triggered by the pca9541: if clearing the alert# signal via the clear_faults or read back fails, then reading back the alert# status of the pca9541 will be necessary followed by clearing of the pca9541 alert#. the pca9541 can issue an alert# even when single bus operation is selected where the bus master selector has not been used or addressed. this may occur because the default state of the pca9541/01 integrated circuit issues alert# to both i 2 c lines for all possible transitioning states of the device. for example, a reset caused by a glitch would cause the alert# to be active. if the pca9541 is not going to be used in a specific application (such as when only a single i 2 c line is utilized), it is imperative that interrupts from the pca9541 are de-activated by the host controller. to de-activate the interrupt regist ers the pca9541 the ?master? needs to address the pca9541 in the ?write? mode, the interrupt enable (ie) register needs to be accessed and the interrupt masks have to be set to hi ?1?. (note: do not mask bit 0 which transmits alert# from the power supply). this command setting the interrupt enable register of the pca9541 is shown below; start unit address ack 1 7 6 5 4 3 2 1 0 1 s 1 1 1 0 a2 a1 a0 0 a command code ack ie register stop 8 1 8 0x00 a 0x0e p there are two independent interrupt enable (ie) registers, one for each controller channel (i 2 c-0 and i 2 c-1). the interrupt register of each channel needs to be configured independently. that is, channel i 2 c-0 cannot configure the ie register of i 2 c-1 or vise-versa. this command has to be initiated to the pc9541 only once after application of power to the device. however, every time a restart occurs the pca9541 has to be reconfigured since its default state is to issue alert# for changes to itx�internal status. if the application did not configure the interrupt enable register the alert# line can be cleared (de-activated), if it has been activated by the pca9541, by reading back the data from the interrupt status registers (istat). refer to the pca9541 data sheet for further information on how to communicate to the pca9541 multiplexer. please note that the pca9541 does not support packet error checking (pec). re-initialization: the i 2 c code is programmed to re-initialize if no activity is detected on the bus for 5 seconds. re- initialization is designed to guarantee that the i 2 c controller does not hang up the bus. although this rate is longer than the timing requirements specified in the smbus specification, it had to be extended in order to ensure that a re-initialization would not occur under normal transmission rates. during the few seconds required to accomplish re-initialization the i 2 c controller may not recognize a command sent to it. (i.e. a start condition). global broadcast: this is a powerful command because it can instruct all power supplies to respond simultaneously in one command. but it does have a serious disadvantage. only a single power supply needs to pull down the ninth acknowledge
ge data sheet CP2725AC54TE cpl hi g h efficienc y rectifier 100-120/200-277v ac input; default outputs: 54v dc @ 2725w, 5v dc @ 4w january 30, 2014 ?2013 general electric company. all rights reserved. page 12 bit. to be certain that each power supply responded to the global instruction, a read instruction should be executed to each power supply to verify that the command properly executed. the global broadcast command should only be executed for write instructions to slave devices. note: the pca9541 i2c master selector does not respond to the global broadcast command. read back delay: the power supply issues the smbalert # notification as soon as the first state change occurred. during an event a number of different states can be transitioned to before the final event occurs. if a read back is implemented rapidly by the host a successive smbalert# could be triggered by the transitioning state of the power supply. in order to avoid successive smbalert# s and read back and also to avoid reading a transitioning state, it is prudent to wait more than 2 seconds after the receipt of an smbalert# before executing a read back. this delay will ensure that only the final state of the power supply is captured. successive read backs: successive read backs to the power supply should not be attempted at intervals faster than every one second. this time interval is sufficient for the internal processors to update their data base so that successive reads provide fresh data. device id: address bits a2, a1, a0 set the specific address of the power supply. the least significant bit x (lsb) of the address byte configures write [0] or read [1] events. in a write command the system instructs the power supply. in a read command information is being accessed from the power supply. address bit 7 6 5 4 3 2 1 0 pca9541 1 1 1 0 a2 a1 a0 r/w micro controller 1 0 0 0 a2 a1 a0 r/w external eeprom 1 0 1 0 a2 a1 a0 r/w global broadcast 0 0 0 0 0 0 0 0 msb lsb the global broadcast instruction executes a simultaneous write instruction to all power supplies. a read instruction cannot be accessed globally. the three programmable address bits are the same for all i 2 c accessible devices within the power supply. pmbus tm commands standard instruction: up to two bytes of data may follow an instruction depending on the required data content. analog data is always transmitted as lsb followed by msb. pec is mandatory and includes the address and data fields. 1 8 1 8 1 s slave address wr a command code a 8 1 8 1 8 1 1 low data byte a high data byte a pec a p master to slave slave to master smbus annotations; s ? start , wr ? write, sr ? re-start, rd ? read, a ? acknowledge, na ? not-acknowledged, p ? stop direct mode data format: the direct mode data format is supported, where y = [ mx + b ] x 10 r . in the equation, y is the data value from the controller and x is the ?real? value either being set or returned. for example, to set the output voltage to 50.45v dc , multiply the desired set point by the m constant, 50.45 x 400 = 20,180. convert this binary number to its hex equivalent: 20,180b = 0x4ed4. the result is sent lsb=0xd4 first, then msb=0x4e. the constants are function operation m b r output voltage output voltage shutdown write / read 400 0 0 output current read 5 0 0 temperature read 1 0 0 input voltage read 1 75 0 input power read 1 0 0 fan speed setting ( % ) read 1 0 0 fan speed in rpm read 100 0 0 pmbus tm command set: command hex code data field function operation 01 1 output on/off clear_faults 03 0 clear status vout_command 21 2 set vout vout_ov_fault_limit 40 2 set ov fault limit read_status d0 10 read status, v out , i out , t leds test on d2 0 test leds leds test off d3 0 service_led_on d4 0 service led service_led_off d5 0 enable_write d6 0 enable eeprom write disable_write d7 0 disable eeprom write inhibit_restart d8 0 latch upon failure auto_restart d9 0 hiccup isolation_test da 0 perform isolation test read_input_string dc 2 read vin and pin read_firmware_rev dd 3 firmware revisions read_run_timer de 3 accumulated on state fan_speed_set df 3 fan speed control fan_normal_speed e0 0 stop fan control read_fan_speed e1 4 fan control & speed stretch_lo_25ms e2 0 production test feature command descriptions operation (01h) : by default the power supply is turned on at power up as long as enable is active lo. the operation command is used to turn the power supply on or off via the pmbus. the data byte below follows the operation command. function data byte unit on 0x80 unit off 0x00 to reset the power supply cycle the power supply off, wait at least 2 seconds, and then turn back on. all alarms and shutdowns are cleared during a restart. clear_faults (03h): this command clears information bits in the status registers, these include: ? isolation ok ? isolation test failed ? restarted ok ? invalid command
ge data sheet CP2725AC54TE cpl hi g h efficienc y rectifier 100-120/200-277v ac input; default outputs: 54v dc @ 2725w, 5v dc @ 4w january 30, 2014 ?2013 general electric company. all rights reserved. page 13 ? invalid data ? pec error vout_command (21h) : this command is used to change the output voltage of the power supply. changing the output voltage should be performed simultaneously to all power supplies operating in parallel using the global address (broadcast) feature. if only a single power supply is instructed to change its output, it may attempt to source all the required power which can cause either a power limit or shutdown condition. software programming of output voltage overrides the set point voltage configured during power_up. the program no longer looks at the ?margin pin? and will not respond to any hardware voltage setting. the default state cannot be accessed any longer unless power is removed from the dsp. to properly hot-plug a power supply into a live backplane, the system generated voltage should get re-configured into either the factory adjusted firmware level or the voltage level reconfigured by the margin pin. otherwise, the voltage state of the plugged in power supply could be significantly different than the powered system. voltage margin range: 42v dc ? 58 v dc . a voltage programming example: the task: set the output voltage to 50.45v dc the constants for voltage programming are: m = 400, b and r = 0. multiply the desired set point by the m constant, 50.45 x 400 = 20,180. convert this binary number to its hex equivalent: 20,180b = 4ed4h. transmit the data lsb first, followed by msb, 0 x d44eh. vout_ov_fault_limit (40h) : this command sets the output overvoltage shutdown level. manufacturer-specific pmbus tm commands many of the manufacturer-specific commands read back more than two bytes . if more than two bytes of data are returned, the standard smbus tm block read is utilized. in this process, the master issues a write command l)llowed by the data transfer from the power supply. the first byte of the block read data field sends back in hex format the number of data bytes, exclusive of the pec number, that follows . analog data is always transmitted lsb followed by msb. a no-ack following the pec byte signifies that the transmission is complete and is being terminated by the ?host?. read_status (d0h) : this ?manufacturer specific? command is the basic read back returning status and alarm register data, output voltage, output current, and internal temperature data in a single read. 1 8 1 8 1 s slave address wr a command code a 1 8 1 8 1 sr slave address rd a byte count = 9 a 8 1 8 1 8 1 status-2 a status-1 a alarm-2 a 8 1 8 1 8 1 alarm-1 a voltage lsb a voltage msb a 8 1 8 1 8 1 1 current a temperature a pec na p status and alarm registers the content and partitioning of these registers is significantly different than the standard register set in the pmbus? specification. more information is provided by these registers and they are accessed rapidly, at once, using the ?multi parameter? read back scheme of this document. there are a total of four registers. all errors, 0 ? normal, 1 ? alarm. status-2 bit title description 7 pec error mismatch between computed and transmitted pec. the instruction has not been executed. clear_flags resets this register. 6 will restart restart after a shutdown = 1 5 invalid instruction the instruction is not supported. an alert# will be issued. clear_flags resets this register. 4 power capacity high line power capacity = 1 3 isolation test failed information only to system controller 2 restarted ok informs host that a successful restart occurred clearing the status and alarm registers 1 data out of range flag app ears until the data value is within range. a clear_flags command does not reset this register until the data is within normal range. 0 enable pin hi state of the enable pin, hi = 1 = off isolation test failed: the ?system controller? has to determine that sufficient capacity exists in the system to take a power supply ?off line? in order to test its isolation capability. since the power supply cannot determine whether sufficient redundancy is available, the results of this test are provided, but the ?internal fault? flag is not set. status-1 bit title description 7 spare 6 isolation test ok isolation test completed successfully. 5 internal fault the power supply is faulty 4 shutdown 3 service led on on = 1 2 external fault the power supply is functioning ok 1 leds flashing leds tested test on = 1 0 output on on = 1 alarm-2 bit title description 7 fan fault 6 no primary no primary detected 5 primary ot primary section ot 4 dc/dc ot dc/dc section ot 3 output voltage lower than bus internal regulation failure 2 thermal sensor failed internal failure of a temperature sensing circuit 1 5v out_of_limits either ovp or ocp occurred 0 power delivery a power delivery fault occurred power delivery: the power supply compares its internal sourced current to the current requested by the current share pin. if the difference is > 10a, a fault is issued.
ge data sheet CP2725AC54TE cpl hi g h efficienc y rectifier 100-120/200-277v ac input; default outputs: 54v dc @ 2725w, 5v dc @ 4w january 30, 2014 ?2013 general electric company. all rights reserved. page 14 alarm-1 bit title description 7 unit in power limit an over load condition that results in constant power 6 primary fault indicates either primary failure or input not present. used in conjunction with bit-0 and status_1 bits 2 and 5 to assess the fault. 5 over temp. shutdown one of the over_temperature sensors tripped the supply 4 over temp warning temperature is too high, close to shutdown 3 in over current shutdown is triggered by low output voltage < 39v dc . 2 over voltage shutdown 1 vout out_of_limits indication the output is not within design limits. this condition may or may not cause an output shutdown. 0 vin out_of_limits the input voltage is outside design limits leds test on (d2h) : will turn-on simultaneously the four front panel leds of the power supply sequentially 7 seconds on and 2 seconds off until instructed to turn off. the intent of this function is to provide visual identification of the power supply being talked to and also to visually verify that the leds operate and driven properly by the micro controller . leds test off (d3h) : will turn-off simultaneously the four front panel leds of the power supply. service led on (d4h) : requests the power supply to flash -on the service (ok-to-remove) led. the flash sequence is approximately 0.5 seconds on and 0.5 seconds off. service led off (d5h) : requests the power supply to turn off the service (ok-to-remove) led. enable write (d6h) : this command enables write permissions into the upper ? of memory locations for the external eeprom. a write into these locations is normally disabled until commanded through i 2 c to permit writing into the protected area. a delay of about 10ms is required from the time the instruction is requested to the time that the power supply actually completes the instruction. see the fru-id section for fu rther information of content written into the eeprom at the factory. disable write (d7h) : this command disables write permissions into the upper ? of memory locations for the external eeprom. unit in power limit or in current limit: when output voltage is > 36v dc the output led will continue blinking. when output voltage is < 36v dc , if the unit is in the restart &'ode, it goes into a hiccup. when the unit is on the output led is on, when the unit is off the output led is off. when the unit is in latched shutdown the output led is off. inhibit_restart (d8h) : the inhibit-restart command directs the power supply to remain latched off for over_voltage, over_temperature and over_current. the command needs to be sent to the power supply only once. the power supply will remember the inhibit instruction as long as internal bias is active. restart after a lachoff: to restart after a latch_off either of four restart mechanisms are available. the hardware pin enable may be turned off and then on . the unit may be commanded to restart via i2c through the operation command by first turning off then turning on . the third way to restart is to remove and reinsert the unit. the fourth way is to turn off and then turn on ac power to the unit. the fifth way is by changing firmware from latch off to restart. each of these commands must keep the power supply in the off state for at least 2 seconds, with the exception of changing to restart . a successful restart shall clear all alarm registers, set the restarted successful bit of the status_2 register. a power system that is comprised of a number of power supplies could have difficulty restarting after a shutdown event because of the non-synchronized behavior of the individual power supplies. implementing&.he latch-off mechanism permits a synchronized restart that guarantees the simultaneous restart of the entire system. a synchronous restart can be implemented by; 1. issuing a global off and then on command to all power supplies, 2. toggling off and then on the enable signal 3. removing and reapplying input commercial power to the entire system. the power supplies should be turned off for at least 20 ? 30 seconds in order to discharge all internal bias supplies and reset the soft start circuitry of the individual power supplies. auto_restart (d9h) : auto-restart is the default configuration for overvoltage, overcurrent and overtemperature shutdowns. however, overvoltage has a unique limitation. an overvoltage shutdown is followed by three attempted restarts, each restart delayed 1 second, within a 1 minute window. if within the 1 minute window three attempted restarts failed, the unit will latch off. if within the 1 minute less than 3 shutdowns occurred then the count for latch off resets and the 1 minute window starts all over again. this command resets the power supply into the default auto- restart configuration. isolation test (dah): this command verifies functioning of output or?ing. at least two paralleled power supplies are required. the host should verify that n+1 redundancy is established. if n+1 redundancy is not established the test can fail. only one power supply should be tested at a time. verifying test completion should be delayed for approximately 30 seconds to allow the power supply sufficient time to properly execute the test. failure of the isolation test is not considered a power supply fault because the n+1 redundancy requirement cannot be verified. the user must determine whether a true isolation fault indeed exists.
ge data sheet CP2725AC54TE cpl hi g h efficienc y rectifier 100-120/200-277v ac input; default outputs: 54v dc @ 2725w, 5v dc @ 4w january 30, 2014 ?2013 general electric company. all rights reserved. page 15 read input string (dch) : reads back the input voltage and input power consumed by the power supply. in order to improve the resolution of the input voltage reading the data is shifted by 75v. 1 7 1 1 8 s slave address wr a command code 0xdc 1 1 7 1 1 a sr slave address rd a 8 1 8 1 byte count = 4 a voltage a 8 1 8 1 8 1 1 power - lsb a power - msb a pec no-ack p read_firmware_rev [0 x dd]: reads back the firmware revision of all three c in the power supply. 1 7 1 1 8 1 s slave address wr a command code 0xdd a 1 1 7 1 1 8 1 a sr slave address rd a byte count = 4 a 8 1 8 1 primary micro revision a dsp revision a 8 1 8 1 1 i2c micro revision a pec no-ack p for example; the read returns one byte for each device (i.e. 0 x 002114h ). the sequence is primary micro, dsp, and i 2 c micro. 0x00 in the first byte indicates that revision information for the primary micro is not supported. the number 21 for the dsp indicates revision 2.1, and the number 14 for the i2c micro indicates revision 1.4. read_run_timer [0 x de]: this command reads back the recorded operational on state of the power supply in hours. the operational on state is accumulated from the time the power supply is initially programmed at the factory. the power supply is in the operational on state both when in standby and when it delivers main output power. recorded capacity is approximately 10 years of operational state. 1 7 1 1 8 1 s slave address wr a command code 0xde a 1 7 1 1 8 1 sr slave address rd a byte count = 4 a 8 1 8 1 8 1 time - lsb a time a time - msb a 8 1 1 pec no-ack p fan_speed_set (dfh) : this command instructs the power supply to increase the speed of the fan. the transmitted data byte represents the hex equivalent of the duty cycle in percentage, i.e. 100% = 0 x 64h. the command can only increase fan speed, it cannot instruct the power supply to reduce the fan speed below what the power supply requires for internal control. fan_normal_speed (e0h): this command returns fan control to the power supply. it does not require a trailing data byte. read_fan_speed (e1h) : returns the commanded fan speed in percent and the measured fan speed in rpm from the individual fans. up to 3 fans are supported. if a fan does not exist (units may contain from 1 to 3 fans), or if the command is not supported the unit return 0x00. 1 8 1 8 1 s slave address wr a command 0xe1 a 1 8 1 8 1 sr slave address rd a byte count = 5 a 8 1 8 1 8 1 8 1 adjustment % a fan-1 a fan-2 a fan-3 a 8 1 1 pec na p stretch_lo_25ms (e2h) : command used for production test of the clock stretch feature. none supported commands or invalid data: the power supply notifies the master if a non-supported command has been sent or invalid data has been received. notification is implemented by setting the appropriate status and alarm registers and setting the smbalert# flag . fault management the power supply records faults in the status and alarm registers above and notifies the master controller as described in the alarm notification section of the non- conforming event. the status and alarm registers are continuously updated with the latest event registered by the rectifier monitoring circuits. a host responding to an smbusalert# signal may receive a different state of the rectifier if the state has changed from the time the smbusalert# has been triggered by the rectifier. the power supply differentiates between internal faults that are within the power supply and external faults that the power supply protects itself from, such as overload or input voltage out of limits. the fault led, fault pin or i2c alarm is not asserted for external faults. every attempt is made to annunciate external faults. some of these annunciations can be observed by looking at the input leds. these fault categorizations are predictive in nature and therefore there is a likelihood that a categorization may not have been made correctly. input voltage out of range: the input led will continue blinking as long as sufficient power is available to power the led. if the input voltage is completely gone the input led is off.
ge data sheet CP2725AC54TE cpl hi g h efficienc y rectifier 100-120/200-277v ac input; default outputs: 54v dc @ 2725w, 5v dc @ 4w january 30, 2014 ?2013 general electric company. all rights reserved. page 16 state change definition a state_change is an indication that an event has occurred that the master should be aware of. the following events shall trigger a state_change ; ? initial power-up of the system when ac gets turned on . this is the indication from the rectifier that it has been turned on. note that the master needs to read the status of each power supply to reset the system_interrupt. if the power supply is back-biased through the 8v_int or the 5vstb it will not issue an smbalert# when ac power is turned back on. ? whenever the power supply gets hot-plugged into a working system. this is the indicator to the system (master) that a new power supply is on line. ? any changes in the bit patterns of the status and alarm registers are a status change which triggers the smbalert# flag. note that a host-issued command such as clear_faults will not trigger an smb hot plug procedures careful system control is recommended when hot plugging a power supply into a live system. it takes about 15 seconds for a power supply to configure its address on the bus based on the analog voltage levels present on the backplane. if communications are not stopped during this interval, multiple power supplies may respond to specific instructions because the address of the hot plugged power supply always defaults to xxxx000 (depending on which device is being addressed within the power supply) until the power supply configures its address. the recommended procedure for hot plug is the following: the system controller should be told which power supply is to be removed. the controller turns the service led on, thus informing the installer that the identified power supply can be removed from the system. the system controller should then poll the module_present signal to verify when the power supply is re-inserted. it should time out for 15 seconds after this signal is verified. at the end of the time out all communications can resume. predictive failures alarm warnings that do not cause a shutdown are indicators of potential future failures of the power supply. for example, if a thermal sensor failed, a warning is issued but an immediate shutdown of the power supply is not warranted. another example of potential predictive failure mechanisms can be derived from information such as fan speed when multiple fans are used in the same power supply. if the speed of the fans varies by more than 20% from each other, this is an indication of an impending fan wear out. the goal is to identify problems early before a protective shutdown would occur that would take the power supply out of service. external eeprom a 64k-bit eeprom is provided across the i 2 c bus. this eeprom is used for both storing fru_id information and for providing a scratchpad memory function for customer use. functionally the eeprom is equivalent to the st m34d64 part that has its memory partitioned into a write protected upper ? of memory space and the lower ? section that cannot be protected. fru_id is written into the write protected portion of memory. write protect feature: writing into the upper 1/4 of memory can be accomplished either by hardware or software. the power supply pulls down the write_protect (wp) pin to ground via a 500 ? resistor between the ?module_present? signal pin and logic_grd (see the module present signal section of input signals). writing into the upper ? of memory can be accomplished by pulling hi the module_present pin. an alternative, and the xcommended approach, is to issue the enable_write command via software. page implementation: the external eeprom is partitioned into 32 byte pages. for a write operation only the starting address is required. the device automatically increments the memory address for each byte of additional data it receives. however, if the 32 byte limit is exceeded the device executes a wrap- around that will start rewriting from the first address specified. thus byte 33 will replace the first byte written, byte 34 the second byte and so on. one needs to be careful therefore not to exceed the 32 byte page limitation of the device.
ge preliminary data sheet CP2725AC54TE cpl hi g h efficienc y rectifier 100-120/200-277v ac input; default outputs: 54v dc @ 2725w, 5v dc @ 4w january 30, 2014 ?2013 general electric company. all rights reserved. page 17 table 1: fru_id the upper quarter of memory starting from address 6144 shall be reserved for factory id and factory data. memory location decimal memory location (hex) length (bytes) format static value type description notes/example 6144d 0x1800 12 ascii fixed ge-energy - product id CP2725AC54TE 6156d 0x180c 10 ascii fixed ge-energy ? part number 123456789x or c123456789 6166d 0x1816 6 ascii variable ge-energy - hardware revision x:xxxx controlled by pdi series # 6172d 0x181c 6 ascii variable spare 6178d 0x1822 14 ascii variable ge-energy - serial_no 01kz51018193xx 01 ?. year of manufacture - 2001 kz ? factory, in this case matamoros 51 .. week of manufacture ______018193xx serial # mfg choice 6192d 0x1830 40 ascii variable ge- manufacturing location ?matamoros, tamps, mexico? 6232d 0x1858 8 ascii fixed spare 6240d 0x1860 2 hex fixed spare 6242d 0x1862 158 ascii fixed customer information these fields are reserved for use by the customer. 6400d 0x1900 5 hex fixed m, b, & r for voltage read m & b are 2 bytes each sent as msb and then lsb. r is one byte. these are stored as two?s complement. see the section on direct mode constants stored in the eeprom for the constants stored in these fields 6405d 0x1905 5 hex fixed m, b, & r for current read 6410d 0x190a 5 hex fixed m, b, & r temp read 6415d 0x190f 5 hex fixed spare 6420d 0x1914 5 hex fixed m, b, & r for voltage set 6425d 0x1919 5 hex fixed m, b, & r for input voltage read 6430d 0x191e 1 hex variable validation chksum 6431d 9x191f 5 hex fixed m, b, & r for input power read 6436d 0x1924 5 hex fixed m, b, & r for fan percent adjust 6441d 0x1929 5 hex fixed m, b, & r for fan rpm read 6446d 0 x 192e 5 hex fixed m, b, & r for converter input voltage read notes: chksum is a crc-8 calculation from location 0x1800 to location 0x19ff without including serial t/mber and checksum locations. c hksum_value = 0xff - (mask of sum with 0x0000ff) write chksum_value byte to location 0x191e. table 2: alarm and led state summary power supply led state monitoring signals condition ac ok green dc ok green service amber fault red fault otw pfw module present ok 1 1 0 0 hi hi hi lo thermal alarm (5c before shutdown) 1 1 1 0 hi lo hi lo thermal shutdown 1 0 1 1 lo lo lo lo defective fan 1 0 0 1 lo hi lo lo blown ac fuse in unit 1 0 0 1 lo hi lo lo ac present but not within limits blinks 0 0 0 hi hi lo lo ac not present 1 0 0 0 0 hi hi lo lo boost stage failure 1 0 0 1 lo hi lo lo over voltage latched shutdown 1 0 0 1 lo hi lo lo over current 1 blinks 0 0 hi hi lo lo non-catastrophic internal failure 2 1 1 0 1 lo hi hi lo missing module hi standby (remote) 1 0 0 0 hi hi lo lo service request (pmbus mode) 1 1 blinks 0 hi hi hi lo communications fault (rs485 mode) 1 1 0 blinks hi hi hi lo 1 this signal is correct if the rectifier is back biased from other rectifiers in the shelf . 2 any detectable fault condition that does not cause a shutting do wn. for example, oring fet failure, boost section out of regul ation, etc. 3 signal transition from hi to lo is output load dependent
ge data sheet cp2725ac54tj� cpl hi g h efficienc y rectifier 100-120/200-277v ac input; default outputs: 54v dc @ 2725w, 5v dc @ 4w january 30, 2014 ?2013 general electric company. all rights reserved. page 18 table 3: signal definitions all hardware alarm signals (fault, pfw, otw, power capacity) are open drain fets. these signals need to be pulled hi to either 3.3v or 5v. maximum sink current 5ma. an active lo signal (< 0.4v dc ) state. all signals are referenced to logic_grd unless otherwise stated. function label type description output enable enable input if shorted to logic_grd main output is on in analog or pmbus mode. power fail warning pfw output an open drain fet; changes to lo ? 5msec before the output decays below 40v dc . i 2 c interrupt alert#_0/alert#_1 output this signal is pulled to 3.3v via a 10k ? resistor. active lo. rectifier fault fault output an open drain fet; normally hi, changes to lo. module present mod_pres output short pin, see status and co ntrol description for further in formation on this signal. on/off on/off input short pin, controls main output during hot-insertion and extraction. ref: vout ( - ) protocol select protocol input selects operationa l mode. ref: vout ( - ). no-connect pmbus, 10k ? - rs485 margining margin input changes the default set point of the main output. over-temperature warning otw output open drain fet; normally hi, changes to lo 5c prior to thermal shutdown. power capacity power_cap output open drain fet; hi indicates 2725w operation and lo indicates 1200w operation. rectifier address unit_addr input voltage level addressing of rectifiers within a single shelf. ref: vout ( - ). shelf address shelf_addr input voltage level addressing of rectifiers within multiple shelves. ref: vout ( - ). back bias 8v_int bi-direct used to back bias the dsp from operating rectifiers. ref: vout ( - ). mux reset reset input resets the internal pca9541 multiplexer standby power 5va output 5v at 0.75a provided for external use current share ishare bi-direct a single wire active-current-share intercon nect between modules ref: vout ( - ). i 2 c line 0 scl_0 input pmbus line 0. i 2 c line 0 sda_0 bi-direct pmbus line 0. i 2 c line 1 scl_1 input pmbus line 1. i 2 c line 1 sda_1 bi-direct pmbus line 1. smbalert# line 0 alert#_0 ou tput pmbus line 0 interrupt smbalert# line 1 alert#_1 output pmbus line 1 interrupt rs485 line rs_485+ bi-direct rs485 line + rs485 line rs_485- bi-direct rs485 line -
ge data sheet CP2725AC54TE cpl hi g h efficienc y rectifier 100-120/200-277v ac input; default outputs: 54v dc @ 2725w, 5v dc @ 4w january 30, 2014 ?2013 general electric company. all rights reserved. page 19 mechanical outline dimensions front panel leds analog s)de i 2 c mode rs485 mode on: input ok blinking: input out of limits on: output ok blinking: overload on: over-temperature warning on: over-temperature warning blinking: service on: over-temperature warning on: fault blinking: not communicating output connector mating connector: right angle pwb mate ? all pins: amp 6450572-1, right angl e pwb mate except pass-thru input power: amp 6450378-1 p1 a6 p7 a1 351.2 m m (13.85 in) 101.6mm (4.00 in) top view 41.4mm (1.63 in) front vie w rear view ! 65 4 3 2 1 a scl_0 mod_pres pfw logic_grd rs_485+ unit_addr b scl_1 otw alert#_0 alert#_1 rs_485- 8v_int c sda_0 margin enable reset ishare protocol d sda_1 fault 5va power_cap on/off shelf_addr note: connector is viewed from the rear positioned inside the rectifier signal pins columns 1 and 2 are referenced to v_out (?) earth ( + ) ( + ) p4 v_out manufacturer p art numbers: fci 51939-568 last to make-first to break shortest pin first make-last to break longest pin implemented in the mating connector signal p5 v_out signal pins columns 3 through 6 are referenced to logic grd p6 v_out ( - ) p7 (neutral) p3 input power output power earth p1 line-1 (hot) (gnd) ( - ) v_out p2 line-2 on: fault
ge data sheet CP2725AC54TE cpl hi g h efficienc y rectifier 100-120/200-277v ac input; default outputs: 54v dc @ 2725w, 5v dc @ 4w contact us for more information, call us at usa/canada: +1 888 546 3243 , or +1 972 244 9288 asia-pacific: +86.021.54279977*808 europe, middle-east and africa: +49.89.878067-280 india: +91.80.28411633 www.ge.com/powerelectronics january 30, 2014 ?2013 general electric company. all rights reserved. page 20 ordering information please contact your lineage power sales representative for pricing, availability and optional features. table 4: device codes item description comcode CP2725AC54TEz 54v dc @ 50a, 5v dc @ 0.75a, rohs 6/6 cc109149423 CP2725AC54TEp 54v dc @ 50a, 5v dc @ 0.75a, rohs 6/6, poe compliant cc109167532

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