Allen Bradley 1746-IA4 SLC 500 4‑Channel AC Digital Input Module

FAQ

Q1: What kind of signals does the 1746‑IA4 handle?
It reads 4 discrete AC input signals.

Q2: What voltage range is required for its inputs?
Inputs operate on 85 – 132 V AC at 47 – 63 Hz.

Q3: How much backplane current does it use?
Backplane current is about 35 mA at 5 V DC and 0 mA at 24 V DC.

Q4: What is the response time for input changes?
Signal ON delay is ~35 ms and OFF delay is ~45 ms.

Q5: What are the module’s physical size and weight?
Approximately 127 mm × 51 mm × 152 mm and ~0.20 kg.

Q6: What environmental range can it operate in?
It operates from 0 °C to 60 °C with non‑condensing humidity.

Q7: Is the 1746‑IA4 still being manufactured?
No, it’s discontinued and considered a legacy SLC 500 module.

Q8: What type of PLC chassis does this module use?
It installs in a standard SLC 500 chassis occupying one slot.

1746-IA4 Allen Bradley

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