Rockwell Automation Publication 1734-UM013N-EN-P - September 2017 189
Specifications Appendix C
Technical Specifications for
Series B Modules
Safety Digital Input Module Specifications
Attribute 1734-IB8S Series B
Safety Input
Inputs per module 8
Input type Current sinking
Voltage, on-state input 11…30V DC, 3.5 mA @ 40 °C (104 °F), Class 2
11…28.8V DC, 3.5 mA @ 55 °C (131 °F), Class 2
1734-IB8S Series B temperature vs. safety input
voltage (max) derating for both horizontal and
vertical installations
Voltage, off-state input, max 5V DC
Current, on-state input, min 3.3 mA
Current, off-state, max 1.3 mA
IEC 61131-2 (input type) Type 3
Reaction time <16.2 ms
Pulse Test Output
Output type Current sourcing
Number of sources (T0, T1M, T2, T3M) 4
Test output current (each output point) 0.7 A @ 40 °C (104 °F)
0.5 A @ 55 °C (131 °F)
1734-IB8S Series B temperature vs. current per test
output point derating for both horizontal and vertical
installations
Aggregate current of test outputs per module 2.8 A @ 40 °C (104 °F)
0.55 A @ 55 °C (131 °F)
30V
-20 °C
(-4 °F)
40 °C
(104 °F)
55 °C
(131 °F)
28.8V
0.7 A
-20 °C
(-4 °F)
40 °C
(104 °F)
55 °C
(131 °F)
0.5 A
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