OVERVIEW

Official designation: Allen-Bradley 1746sc-CTR8 (SLC 500, Counter Input Module)

The 1746sc-CTR8 is a high-performance counter input module for SLC 500 systems, ideal for precise signal measurement in distributed I/O applications.It offers 8 independent channels supporting single-ended, quadrature, and enable control line inputs.

KEY SPECS SUMMARY

Power: 5 V DC, 200 mA Backplane

Interfaces / Ports: 20-pin D-shell connector

Indicators: 8 status LEDs (Inputs)

Operating Temp: 0 to 60 degrees C

Platform / Compatibility: SLC 500 Scanner Base

Limit: 8 input channels, 50 kHz max speed

Lifecycle: Discontinued

FREQUENTLY ASKED QUESTIONS

Technical Specifications:

Q: What are the maximum operating speed and input impedance of the 1746sc-CTR8 module?

A: The module operates up to 50 kHz input speed and has a 25 kOhm input impedance.

Wiring & Installation:

Q: Which types of input signals can the 8 channels of the 1746sc-CTR8 module accept?

A: It accepts single-ended, quadrature, and enable control line counter inputs.

Troubleshooting & Compatibility:

Q: Which diagnostic indicator can help identify communication errors on the counter module?

A: The module includes status indicators (I/O) to monitor input activity and system status.

Replacement & Upgrades:

Q: For which system platform is the discontinued Allen-Bradley 1746sc-CTR8 module primarily used?

A: This module is used specifically within a SLC 500 Scanner Base Assembly (e.g., 1746sc-SR).