OVERVIEW

Official designation: Allen-Bradley 1746-IM16 (SLC 500, Discrete Input Module)

The 1746-IM16 is a 16-point, single-slot AC discrete input module for the SLC 500 chassis. It is designed to reliably sense AC control signals ranging from 170V AC to 265V AC.

KEY SPECS SUMMARY

Power: 5V DC, 85 mA

Interfaces / Ports: Removable wiring terminal block

Indicators: 16 Input Status LEDs

Operating Temp: 0 to 60 degrees C

Platform / Compatibility: SLC 500, 1746 I/O chassis

Limit: 170V AC to 265V AC input range

Lifecycle: Discontinued

FREQUENTLY ASKED QUESTIONS

Technical Specifications:

Q: What is the maximum current draw of the 1746-IM16 input module from the backplane?

A: The module draws a maximum of 85 mA from the 5V DC backplane power supply.

Wiring & Installation:

Q: How many wires are required for a typical connection to a single channel on the 1746-IM16?

A: Two wires are required per channel: one for the AC signal line and one for the neutral or common return.

Troubleshooting & Compatibility:

Q: If an input LED is off when a signal is present, what is the most likely cause?

A: The cause is typically an open fuse, a faulty input signal, or incorrect AC wiring connections.

Replacement & Upgrades:

Q: Is the 1746-IM16 module considered a high-speed input module for pulse counting?

A: No, the 1746-IM16 is a standard discrete input module, not designed for high-speed counting.