Pepper Computer RS232 User Manual

SMART I/O User’s Manual

Chapter 4 Digital Modules

©1996 PEP Modular Computers GmbH

March 12, 1996

Page 4 - 33

The SM-REL1 provides power switching up to 250V AC or 220V DC with

surge protection and the ability to switch inductive loads being built-in

features of this versatile module. A freely programmable LED on the front

panel provides the user interface together with 6 relay status LEDs and an

external 24V supply signal LED.

Isolation

System

: 2.5 kV Optoisolated

Between Channels

: 1.5 kV

Between Contacts

: 1.0 kV

Surge Voltage

: 1.5 kV

Output

6 Normally Open Relay Contacts
Max. Switching Voltage

: 250V AC / 220V DC

Max. Switching Current

: 2A

Max. Switching Load (Resistive)

: 60W / 125 VA

Switch ON Current Rate

: 8A/3ms

 Sustained 

Current

: 

3A

Switch OFF Current Rate

: 2A/2ms

Max. Switching Frequency

: 100 Hz

Contact Resistance

: 50m

Ω

Settling Time

: 4ms

Power ON/OFF Protection

: Glitch-free Power ON

Expected Life

: 2 Million Cycles

Input

Ext. VCC

: 24V DC 

±

 20% @ 100mA

Front Panel

6 Yellow LEDs

: Relay CLOSED

1 Green LED

: Ext. VCC Ready

1 Yellow LED

: User

Power Cons.

23mW (min.), 160mW (max.)

Temperature Range Standard (0

°

C to +70

°

C)

Module Weight

61g

ID Byte

$20, read by the SPI Interface