1746-HSCE | Allen-Bradley High-Speed Counter Module Supplier

Introduction to the 1746-HSCE High-Speed Counter Module

When your SLC 500 system requires precise bidirectional counting, the 1746-HSCE from Allen-Bradley delivers dependable performance. This high-speed counter module is part of the Rockwell Automation SLC 500 platform, designed for industrial environments. It features one counting channel with inputs A, B, and Z, compatible with ±5V DC differential or 0-5V DC single-ended signals. With a maximum input frequency of 50 kHz in sequencer mode and 32.767 kHz in rate mode, it handles motion detection and totalizing tasks efficiently.

Key Features and Technical Specifications

• The 1746-HSCE operates with a backplane current of 320 mA at +5V and 0 mA at +24V.
• It supports a maximum cable length of 305 m (1000 ft) using Belden 9503 or equivalent cable.
• Four open-collector outputs provide on-state current ratings: 16 mA at 4.5V DC, 40 mA at 10V DC, and 125 mA at 30V DC.
• Minimum pulse width is 10 µs with a pulse separation of 4.5 µs, ensuring reliable high-speed counting.
• Operating temperature range is 0°C to +60°C (+32°F to +140°F), with storage from -40°C to +85°C (-40°F to +185°F).
• Relative humidity tolerance is 5 to 95% without condensation.

Applications and Use Cases

In factory automation, the 1746-HSCE excels at motion detection and totalizing. For process automation, it handles high-speed discrete inputs with ease. Its sequencer and rate modes allow flexible configuration for diverse counting needs. Maintenance engineers appreciate its built-in diagnostic LEDs and status word for quick troubleshooting.

Installation and Setup Guide

Mount the 1746-HSCE into any available slot of an SLC 500 chassis, either locally with the CPU or remotely via a communication adapter. Use the recommended Belden 9503 cable for input wiring to maintain signal integrity. Ensure the module is installed in a NEMA-rated enclosure for industrial environments. Refer to the official manual for detailed wiring diagrams.

Maintenance and Reliability Tips

Regularly inspect the 1746-HSCE for dust or debris that could affect cooling. Verify that all connections remain secure and that the operating temperature stays within 0°C to +60°C. The module's step response of 100 ms input and 2.5 ms output ensures fast reaction times. For long-term reliability, follow the manufacturer's maintenance schedule.

Compatibility and Integration

The 1746-HSCE integrates seamlessly with the SLC 500 platform, using the 1746-RT25G I/O connection cable. It occupies one slot and updates every 4.8 milliseconds. This module works with both local and remote configurations, making it versatile for various system layouts.

Frequently Asked Questions

Q: What is the maximum input frequency of the 1746-HSCE?

A: In sequencer and range mode, the maximum input frequency is 50 kHz; in rate mode, it is 32.767 kHz.

Q: How many outputs does the 1746-HSCE have?

A: It features four open-collector outputs with on-state current ratings up to 125 mA at 30V DC.

Q: What is the backplane current draw for the 1746-HSCE?

A: The module draws 320 mA at +5V and 0 mA at +24V from the backplane.

Q: Can the 1746-HSCE be used in remote racks?

A: Yes, it can be installed remotely along a SLC 500 communication adapter.

Q: What is the minimum pulse width for inputs?

A: The minimum pulse width is 10 µs with a pulse separation of 4.5 µs.

Product Support and Availability

The 1746-HSCE is in stock and ready to ship from Petro Auto Tech. Contact our team for pricing and availability. Please verify current lifecycle status with Petro Auto Tech before ordering.