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OVERVIEW
Official designation: Allen-Bradley 1746-IA4 (SLC 500, Digital AC Input Module)
The 1746-IA4 is a digital input module providing 4 channels of reliable signal acquisition for SLC 500 systems. It is designed to interface with 85–132 VAC field devices.
KEY SPECS SUMMARY
Power: 35 mA at 5 VDC
Interfaces / Ports: 4 input channels
Indicators: 4 input status LEDs
Operating Temp: 0 to 60 degrees C
Platform / Compatibility: SLC 500 Chassis
Limit: Input voltage 85–132 VAC
Lifecycle: Discontinued
FREQUENTLY ASKED QUESTIONS
Technical Specifications:
Q: What is the maximum current drawn by the 1746-IA4 from the SLC 500 backplane power supply?
A: The module draws a maximum of 35 mA at 5 VDC backplane current.
Wiring & Installation:
Q: How many individual digital input channels does the 1746-IA4 module provide for field devices?
A: The module provides a total of four individual input channels.
Troubleshooting & Compatibility:
Q: What is the normal operating voltage range for the AC signals connected to the 1746-IA4 inputs?
A: The module is designed to accept signals within the 85 to 132 VAC range.
Replacement & Upgrades:
Q: Where are the status indicators located on the 1746-IA4, and what do they show?
A: Four status LEDs on the front indicate the real-time ON/OFF status of each input channel.
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