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OVERVIEW
Official designation: Allen-Bradley 1746-OB16E (SLC 500, Digital DC Output Module)
The 1746-OB16E is a high-density digital output module for SLC 500 systems, featuring sixteen current sourcing output channels. It controls field devices and operates using a 10–30 VDC external power supply.
KEY SPECS SUMMARY
Power: 5V DC @ 135 mA
Interfaces / Ports: 20-pin terminal block
Indicators: 16 Channel Status LEDs (Green)
Operating Temp: 0 to 60 degrees C
Platform / Compatibility: SLC 500 Modular
Limit: 16 sourcing outputs
Lifecycle: Active
FREQUENTLY ASKED QUESTIONS
Technical Specifications:
Q: What is the typical off-state leakage current per channel for the 1746-OB16E module?
A: The typical off-state leakage current is 0.5 milliamperes.
Wiring & Installation:
Q: What external power range is required for the output field devices connected to this module?
A: The module outputs require a 10–30 VDC power source.
Troubleshooting & Compatibility:
Q: What does a steady green Channel Status LED indicate on the 1746-OB16E module?
A: A steady green LED indicates the corresponding output channel is energized (ON).
Replacement & Upgrades:
Q: What is the recommended terminal block for wiring the field devices to the 1746-OB16E module?
A: Refer to the latest manufacturer manual for compatible terminal block information.
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