Pepper Computer RS232, RS485 user manual SM-REL1, Introduction

Chapter 4 Digital Modules SMART I/O User’s Manual

4.3SM-REL1

4.3.1Introduction

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.

4.3.2 Specifications

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	: 50mΩ
	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

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