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IOLAN SDS/SCS/STS/MDC User’s Guide, Version 4.5 261
Configuring I/O
Interfaces Chapter 10
10
Introduction
There is a line of IOLANs that can control/monitor the following types
of I/O:
z Analog Input
z Digital Input/Output
z Relay Output
z Temperature Input
Some of the models are I/O combinations and some of the models support one I/O type, although all
of the SDS I/O models are extensions of the feature rich SDS IOLAN.
Technical Specifications
Digital I/O
z 2 or 4 channels depending on model
z software selectable as inputs or outputs
z optical isolation of 2000V rms
Digital Input
z Dry Contact: Logic 0 = open. Logic 1 = close to GND
z Wet Contact: Logic 0 = 0-3V. Logic 1 = 10V-30V
Digital Output
z Open collector to 30V (source, sink or both)
z 200mA max load
z Digital out (DO) or pulse mode
Relay
z Form C type SPDT
z Contact rating: 1A@30VDC, 0.5A@AC: 120VAC
z Breakdown voltage: 500 VAC (50/60 Hz)
z Relay on time: 7 msec. Relay off time 3 msec
z Total switching time: 10 msec
z Insulation resistance: 1000 MW minimum at 500 VDC