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OVERVIEW
Official designation: Allen-Bradley 1746-IG16 (SLC 500, Digital DC TTL Input Module)
The 1746-IG16 is a high-density 16-point digital input module for the SLC 500 system. It is specifically designed to accept low-voltage 5 VDC TTL signals, ensuring reliable interface with logic-level devices.
KEY SPECS SUMMARY
Power: 5V DC @ 170 mA
Interfaces / Ports: 20-pin terminal block
Indicators: 16 Input Status LEDs
Operating Temp: 0 to 60 degrees C
Platform / Compatibility: SLC 500 Modular
Limit: 4.5–5.5 VDC input range
Lifecycle: Active
FREQUENTLY ASKED QUESTIONS
Technical Specifications:
Q: What is the nominal input voltage range supported by the 1746-IG16 TTL input module?
A: The module is designed to accept inputs ranging from 4.5 VDC to 5.5 VDC.
Wiring & Installation:
Q: What is the field wiring connection type used for the 16 input channels on this module?
A: The module utilizes a 20-pin removable terminal block for all field connections.
Troubleshooting & Compatibility:
Q: How is the operational status of individual input channels indicated on the 1746-IG16 module?
A: Status is shown by 16 individual LEDs, one for each input point.
Replacement & Upgrades:
Q: Can the 1746-IG16 module be used as a replacement for standard 24VDC input modules in the SLC 500 chassis?
A: No, it is specifically for 5 VDC TTL signals and cannot replace higher voltage modules.
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