Allen Bradley 1746SC-CTR4 SLC 500 Counter Module

Overview

The Allen Bradley 1746SC-CTR4 is a high-speed counter module designed for the SLC 500 PLC platform. It is used for accurate pulse counting, frequency measurement, and position monitoring in industrial automation systems. The module is suitable for encoder feedback, flow metering, and motion-related control applications requiring reliable high-speed signal processing.

General Information

Part Number: 1746SC-CTR4

Manufacturer: Allen Bradley

Brand: Rockwell Automation

Country of Origin: United States

Series: SLC 500

Module Type: High-Speed Counter Module

Channel Configuration: 4 counter channels

Installation Type: Chassis-mounted module

Application: Pulse counting and motion monitoring

Compatibility: Allen Bradley SLC 500 systems

Power Specifications

Backplane Current Consumption: Approx. 125 mA at 5 V DC

Input Voltage: 24 V DC nominal

Input Signal Type: High-speed pulse input

Isolation: Optical isolation for signal protection

Power Dissipation: Low-power industrial design

Protection Features: Noise immunity and signal isolation support

Communication & Interface

PLC Interface: SLC 500 backplane connection

Counter Functions: Up/down counting, pulse accumulation, frequency measurement

Input Compatibility: Encoder and pulse sensor inputs

Status Indicators: LED indicators for channel activity and diagnostics

Wiring Method: Removable terminal block connection

System Integration: Supports integration with industrial motion and monitoring systems

Environmental

Operating Temperature: 0 to +60 °C

Storage Temperature: −40 to +85 °C

Relative Humidity: 5% to 95% non-condensing

Shock Resistance: Industrial-grade shock protection

Vibration Resistance: Suitable for factory automation environments

Protection Rating: Open-style module for enclosure installation

Dimensions & Weight

Dimensions (H × W × D): 144.5 × 34.6 × 130.18 mm

Weight: 0.16 kg

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