Product Description
Allen-Bradley 1756-HSC/B High-Speed Counter Module
- Manufacturer: Allen-Bradley (Rockwell Automation)
- Series: ControlLogix
- Model/Part Number: 1756-HSC/B
- Description: High-Speed Counter Module, 2 Channels, 4 Outputs (36 Pin)
Overview
The Allen-Bradley 1756-HSC/B is a High-Speed Counter Module designed for the ControlLogix platform, part of Rockwell Automation’s portfolio. It is used for high-speed counting and frequency measurement in industrial automation applications
Technical Specifications
| Specification | Details |
|---|---|
| Model | 1756-HSC/B |
| Series | ControlLogix |
| Type | High-Speed Counter Module |
| Function | High-speed counting and frequency measurement for industrial applications |
| Input Channels | 2 counters, each with 3 inputs (A, B, Z for Gate/Reset) |
| Input Types | Single-ended or differential inputs |
| Input Voltage | 12–24 VDC (10–31.2 VDC range) |
| Input Current | 15 mA per input |
| Maximum Input Frequency | 1 MHz (Counter mode, A input) 500 kHz (Rate Measurement mode, A input) 250 kHz (Encoder mode, A/B inputs, X1 or X4) 70 Hz (with debounce filter enabled) |
| Count Range | 0 to 16,777,214 (resettable via external signal or memory bit) |
| Outputs | 4 current-sourcing DC outputs |
| Output Voltage | 4.5–5.5 VDC (low range) 10–31.2 VDC (high range) |
| Output Current | 20 mA at 4.5–5.5 VDC 1.0 A at 10–31.2 VDC |
| Response Time | 0.05 ms (output activation) |
| Operational Modes | Counter mode (default, updates every 2 ms) Frequency mode (positive/negative frequency based on rotation direction) |
| Backplane Current | 300 mA at 5.1 VDC 3 mA at 24 VDC |
| Power Dissipation | 5.6 W maximum at 60°C |
| Backplane Power | 1.9 W |
| Connectors | 36-pin terminal block (requires 1756-TBCH or 1756-TBSH) |
| Compatible Devices | Allen-Bradley 845 incremental encoder, PHOTOSWITCH Series 10,000 photoelectric sensors, Bulletin 872 3-wire DC proximity sensors |
| Compatibility | ControlLogix chassis, integrates with ControlLogix controllers and Studio 5000 software |
| Mounting | Plugs into ControlLogix chassis |
| Operating Temperature | 0°C |