Product Overview
The Allen-Bradley 1771-OBN is a DC output module for 1771 I/O chassis, supporting 32 outputs divided into 4 groups of 8, with a 10–30 V DC range.
Output Characteristics
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Max Output Current: 0.5 A per output, 2 A per group, 8 A per module
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Surge Current: 2 A per output / 5 A per group / 20 A per module for 10 ms, repeatable every 2 s
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On-State Voltage Drop: 1.5 V DC @ 0.5 A
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Off-State Leakage: 1.0 mA @ 55°C
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Signal Delay: On-to-off 2 ms, off-to-on 0.1 ms
Power and Thermal
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Power Dissipation: 13.7 W max, 1.7 W min
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Thermal Dissipation: 46.7 BTU/hr max, 5.7 BTU/hr min
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Backplane Current: 330 mA @ 5 V DC
Isolation
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Isolation Voltage: Tested to withstand 500 V DC for 60 s
