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DS2/DS4 Hardware Manual
5.5
AIM104 - RLY8/IN8
The RLY8/IN8 board provides up to 8 opto-isolated digital inputs and 8 relay outputs. Jumper options are
included for each digital input to select a 10ms input debounce filter.
5.5.1
Board Specification
Power Consumption
5.5.2
Digital Input Specifications
Number of Inputs
Switching Voltage Range
Maximum Input Frequency
Protection
5.5.3
Digital Output Specifications
Number of Outputs
Switching Range
Maximum Input Frequency
Protection
5.5.4
RLY8/IN8 Link Settings
Link settings on the RLY8/IN8 determine where the board's I/O will appear in memory. If more than one
RLY8/IN8 board is used, the first RLY8/IN8 in a Director should be addressed as Board #1, and the second as
Board #2.
Board Fitted
Board #1
Board #2
Input Filter Selection
1.25 Watts, excluding loop power
8 opto-isolated digital inputs
10 V to 30 V
50 Hz with debounce filter enabled
10 KHz with debounce filter disabled
±40 V steady state overvoltage
300 W surge for 1 ms
8 changeover relays
Normally Open and Normally Closed contacts
Voltage up to 40 Vdc and currents up to 250 mA
Power switching rating of 60 W (resistive load)
50 Hz with debounce filter enabled
10 KHz with debounce filter disabled
Up to 48 Vdc steady state overvoltage
300 W surge for 1 ms
PC/104 Base Address
360 H
364 H
LK1 Jumpers Installed
A2 , A3 , A4 , A7
A3 , A4, A7
Page 29
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