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| DATA S HE E T AUTOMOTIVE RELAYS EP2S/EP1S SERIES LOW SOUND PRESSURE DESCRIPTION The NEC EP2S / EP1S series are PC-board mount type automotive relays suitable for various motor controls and other applications that require a high level of quality and performance. The sound pressure level of EP2S / EP1S series is 57 dBA nominal when the relay operates, and 49 dBA nominal when the relay releases. FEATURES TM Less sound pressure (-10 dB at "operate" and -3 dB at "release" compared with EP2 / EP1) TM For motor and solenoid reversible control TM High performance and productivity by unique structure TM Flux tight housing APPLICATION TM Power window control TM Electrical door lock TM Wiper system EP2S SERIES EP1S SERIES Document No. ER0131EJ1V0DS00 Date Published April 1996 M Printed in Japan (c) 1996 EP2S / EP1S SERIES SCHEMATIC (BOTTOM VIEW) EP2S SERIES 2 4 1 39 4 1 EP1S SERIES 2 3 4 2 1 3 8 56 7 10 56 7 8 5 [Unit A] [Unit B] [Unit A] [Unit B] [H Bridge Type] [Separate Type] DIMENSIONS mm (inch) EP2S SERIES H Bridge Type Vent hole JAPAN Separate Type Separate type discrimination mark Vent hole JAPAN 2(0.079) Date code Part number Part number EP2S-3L1 0G3 24 Date code EP2S-3L1T 0G3 24 23.8 + 0.5 - (0.94) 0.5(0.02) 16.0 + 0.5 - (0.63) 16.2 + 0.5 - (0.64) 23.8 + 0.5 - (0.94) 0.5(0.02) 16.0 + 0.5 - 16.2 + 0.5 - (0.64) 3.5 (0.14) 3.5 10.1 8.0 5.45 (0.21) (0.21) (0.4) (0.31) 3.5 (0.14) (0.32) (0.32) 10.1 8.0 5.45 (0.21) (0.4) (0.31) 3.5 (0.14) 2-0.5x1.1(0.02x0.04) 3.1 (0.12) 4-0.5x1.1(0.02x0.04) 2.2 (0.09) 3.1 (0.12) 5.45 (0.21) 6.4 (0.25) 5.45 (0.09) (0.21) 6.4 (0.25) (0.14) (0.63) 2.2 (0.09) 3.1 (0.12) 2.2 (0.09) (0.14) 3.5 (0.31) (0.4) 11.9 (0.47) 8.0 10.1 11.9 (0.47) 2-1.3x1.3(0.05x0.05) 4- 0.6( 0.22) for reference (0.14) 3.5 (0.31) (0.4) 11.9 (0.47) 8.0 10.1 11.9 (0.47) 2-1.3x1.3(0.05x0.05) 4- 0.6( 0.22) for reference 2 (0.32) (0.32) 8.1 8.1 8.1 8.1 2.2 6.4 EP2S / EP1S SERIES EP1S SERIES JAPAN Vent hole Date code Part number EP1S-B3G1 4A 1 22 14.6 + 0.5 - (0.58) 16.2 + 0.5 - (0.63) 16.0 + 0.5 - 3.5 0.5(0.02) 10.1(0.4) 8.0(0.31) 2- 0.6 ( 0.02) 3.5 (0.14) 3.1 (0.12) (0.21) 2.2 (0.09) 5.45 (0.25) 6.4 2.65 (0.1) (0.14) (0.63) 1.3x1.3 (1.5x1.5) 2-0.5x1.1 (0.02x0.02) for reference PCB PAD LAYOUT mm (inch) (BOTTOM VIEW) EP2S SERIES 4 - 1.1 +0.1 ( 0.043) -0 2 - 1.5 +0.1 ( 0.059) -0 4 - 1.1 +0.1 ( 0.043) -0 4 - 1.5 +0.1 ( 0.059) -0 EP1S SERIES 2 - 1.1 +0.1 -0 ( 0.043) 2 - 1.5 +0.1 -0 ( 0.059) 1.9 +0.1 -0 ( 0.075) 2 - 1.9 +0.1 ( 0.075) -0 [H Bridge Type] [Separate Type] 2 - 1.9 +0.1 ( 0.075) -0 3 EP2S / EP1S SERIES SPECIFICATIONS Items Contact Form Contact Material Contact Resistance Contact Switching Voltage Contact Switching Current EP2S 1 form Cx2 (H bridge type and separate type) 1 form C Silver oxide complex alloy 50 m max. (measured at 7 A) initial 16 Vdc max. 25 A max. 20 A / regular type (2 minutes max. 12 Vdc at 85C) 25 A / high carrying current type (2 minutes max. 12 Vdc at 85C) 25 A / regular type (2 minutes max. 12 Vdc at 85C) 30 A / high carrying current type (2 minutes max. 12 Vdc at 85C) EP1S at 25 C (77 F) Contact Carrying Current Operate Time Release Time Normal Operate Power Insulation Resistance Breakdown Voltage Shock Resistance Vibration Resistance Ambient Temperature Coil Temperature Rise Mechanical Approx. 5 ms (at 12 Vdc excluding bounce) initial Approx. 2 ms (at 12 Vdc excluding bounce) initial 0.64 W (at 12 Vdc) 100 M min. (at 500 Vdc) initial 500 Vdc min. (for 1 minute) initial 98 m / s2 [Approx. 10 G] min. (misoperating) 10 to 300 Hz, 43 m / s2 [Approx. 4.4 G] min. (misoperating) -40C to +85C (-40 F to +185F) 50 C / W (without contact carrying current) 1x10 6 operations Life Expectancy Electrical Contact 1x10 5 operations (at 14 Vdc, Motor Load 25 A / 7 A) G Contact 1x10 5 operations (at 14 Vdc, Motor Load 20 A / 3 A) L or N Weight Approx. 15 gr Approx. 8 gr SOUND PRESSURE LEVEL (for reference) Sound Pressure level Fast (F) Operate (at 12 Vdc drive with diode) Relese (at 12 Vdc drive with diode) 57 dBA nominal 49 dBA nominal Refer to the measuring condition in the figure of sound pressure level distribution on page 7. 4 EP2S / EP1S SERIES COIL RATING EP2S SERIES Part Number H Bridge Type EP2S-3L1 EP2S-3L2 EP2S-3L3 EP2S-4L3 EP2S-4L4 EP2S-4L5 Separate Type EP2S-3L1T EP2S-3L2T EP2S-3L3T EP2S-4L3T EP2S-4L4T EP2S-4L5T Nominal Voltage (Vdc) 12 12 12 12 12 12 Coil Resistance ( 10 %) 225 225 225 300 300 300 Must Operate Voltage (Vdc max.) 6.5 7.0 7.5 7.5 8.0 8.5 Must Release Voltage (Vdc min.) 0.9 0.9 0.9 0.9 0.9 0.9 at 25 C (77 F) Nominal Operate Power (W) 0.64 0.64 0.64 0.48 0.48 0.48 High carrying current type available EP1S SERIES Part Number Regular Type EP1S-3L1 EP1S-3L2 EP1S-3L3 EP1S-4L3 EP1S-4L4 EP1S-4L5 High Carrying Current Type EP1S-B3G1 EP1S-B3G2 EP1S-B3G3 EP1S-B4G3 EP1S-B4G4 EP1S-B4G5 Nominal Voltage (Vdc) 12 12 12 12 12 12 Coil Resistance ( 10 %) 225 225 225 300 300 300 Must Operate Voltage (Vdc max.) 6.5 7.0 7.5 7.5 8.0 8.5 Must Release Voltage (Vdc min.) 0.9 0.9 0.9 0.9 0.9 0.9 Nominal Operate Power (W) 0.64 0.64 0.64 0.48 0.48 0.48 5 EP2S / EP1S SERIES NUMBERING SYSTEM EP2S - B 3 L 1 S T Nil : H Bridge Type Wiring T : Separate Type Nil : Unsealed (Standard type) T : Sealed 1 : 6.5 V max. 2 : 7.0 V max. Operate Voltage (at 25C) 3 : 7.5 V max. 4 : 8.0 V max. 5 : 8.5 V max. L : Silver oxide complex alloy, Type I Contact Material N : Silver oxide complex alloy, Type II G : Silver oxide complex alloy, Type III Coil Resistance 3 : 225 10% 4 : 300 10% Nil : Regular type B : high carrying current type EP2S Type EP1S Enclosure Carrying Current TYPICAL APPLICATION (H Bridge Type) MOTOR 16 V M Tr1 Tr2 Tr1 STOP FORWARD REVERSE off on off Tr2 off off on Tr1 Tr2 100 ms min. It is necessary to take more than 100 msec intervals for on / off timing between driving Tr1 and Tr2. If the interval is less than 100 msec, an excessive current happen to flow to the relay contacts. 6 EP2S / EP1S SERIES TECHNICAL DATA Coil Temperature (EP2S-3L1) Coil Temperature Rise (C) Vcoil = 12 V, IC = 25 A Vcoil = 7.5 V, IC = 25 A 100 Coil Temperature Rise (C) 150 100 50 50 Vcoil = 12 V, IC = 0 A Vcoil = 7.5 V, IC = 0 A IC = 0A 0 10 20 30 0 0.5 1.0 1.5 2.0 Energized Time (minutes) Applied Power (W) Operate Time (EP2S-3L1) Release time (EP2S-3L1) 10 Operate Time (ms) Release Time (ms) 10 With Diode Mean 5 5 Mean Without Diode 0 0.5 1.0 1.5 0 0.5 1.0 1.5 Applied Power (W) Applied Power (W) Distribution of Sound Pressure Level (for reference) 50 40 Frequency (%) 30 20 10 0 EP2S - 3L1 n = 80 Frequency (%) 50 40 30 20 10 0 EP2-3L1 n = 80 Release Operate 40 50 60 70 40 50 60 70 Sound Pressure Level (dBA) Sound Pressure Level (dBA) Measuring Condition Measuring Equipment : Precision Sound Meter Detector-indicator Characteristic : Fast (F) specified in IEC 651 Relay Drive : 12 Vdc (Diode clamped) Distance between Microphone and Sample : 50 mm Background Noise : less than 35 dB (A) (A) : Frequency Weighting Characteristic specified in IEC 651 7 EP2S / EP1S SERIES No part of this document may be copied in any form or by any means without the prior written consent of NEC Corporation. NEC Corporation does not assume any liability for infringement of patents, copyrights or other intellectual property rights of third parties by or arising from use of a device described herein or any other liability arising from use of such device. No license, either express, implied or otherwise, is granted under any patents, copyrights or other intellectual property rights of NEC Corporation or others. |
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