POINT I/O Output Module 17
Publication 1734-IN018A-EN-P - November 2004
Specifications - 1734-OB2, -OB4 and -OB8 Output Modules
Output Specifications
Number of Outputs 1734-OB2 - 2 (1 group of 2) nonisolated, sourcing
1734-OB4 - 4 (1 group of 4) nonisolated, sourcing
1734-OB8 - 8 (1 group of 8) nonisolated, sourcing
ON-State Voltage Range 10V dc minimum
24V dc nominal
28.8V dc maximum
ON-State Voltage Drop 0.2V dc maximum
ON-State Current 1.0 mA minimum per channel
OFF-State Voltage 28.8V dc maximum
OFF-State Leakage 0.5 mA maximum
Output Signal Delay
1
OFF to ON
ON to OFF
0.1 ms maximum
0.1 ms maximum
Output Current Rating 1734-OB2 - 1.0 A per output, 2.0 A maximum per module
1734-OB4 and 1734-OB8 - 1.0 A per output, not to exceed
3.0 A maximum per module
Surge Current 2 A for 10 ms, repeatable every 3 s
Indicators (field side
indication, logic driven)
1734-OB2
2 yellow output status;
2 green/red module/network status
1734-OB4
4 yellow output status;
2 green/red module/network status
1734-OB8
8 yellow output status;
2 green/red module/network status
Keyswitch Position 1
General Specifications
Module Location 1734-TB or -TBS wiring base assembly
Pointbus Current 75 mA maximum @ 5V dc
Power Dissipation 1734-OB2 - 0.8 W maximum @ 28.8V dc
1734-OB4 - 1.2 W maximum @ 28.8V dc
1734-OB8 - 2.0 W maximum @ 28.8V dc
Thermal Dissipation 1734-OB2 - 2.7 BTU/hr maximum @ 28.8V dc
1734-OB4 - 4.1 BTU/hr maximum @ 28.8V dc
1734-OB8 - 6.8 BTU/hr maximum @ 28.8V dc
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