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The Allen Bradley 1746-HSCE2 is a multi-channel high-speed counter module designed for modular PLC systems. It is engineered to process high-frequency pulse signals from encoders, sensors, and other fast-response devices with high precision and reliability.
This module functions as an intelligent counting unit within the control system. It operates independently for high-speed tasks, ensuring that pulse signals are captured accurately without being affected by scan time limitations of the main processor.
With support for quadrature encoder inputs and advanced counting modes, the 1746-HSCE2 is widely used in motion-related and measurement-based applications where precision and speed are critical.
The SLC 500 series is a modular automation platform. The 1746-HSCE2 extends its capabilities by providing high-speed counting, position tracking, and rate measurement functions.
Below is a structured technical parameter table for the 1746-HSCE2:
| Parameter | Specification |
|---|---|
| Model | 1746-HSCE2 |
| Product Type | High-Speed Counter Module |
| Series | SLC 500 |
| Input Channels | 4 single-ended or 2 differential quadrature |
| Input Signals | ±A, ±B, ±Z encoder inputs |
| Input Voltage Range | 4.2–12 V DC / 10–30 V DC |
| Nominal Voltage | 5 V DC / 24 V DC |
| Max Input Frequency | Up to 1 MHz |
| Minimum Pulse Width | 475 ns |
| Minimum Phase Separation | 200 ns |
| Counting Modes | Up/down, quadrature, rate, totalizing |
| Outputs | 4 physical + 4 virtual outputs |
| Output Voltage | 5–30 V DC |
| Max Output Current | 1 A per point |
| Backplane Current (5V) | approx. 250 mA |
| Backplane Current (24V) | minimal |
| Update Time | approx. 1.5 ms |
| Isolation | up to 1000 V |
| Mounting | SLC chassis slot |
| Operating Temperature | 0°C to +60°C |
| Storage Temperature | -40°C to +85°C |
| Dimensions | approx. 254 × 165 × 57 mm |
| Weight kg( ) | 0.27 kg |
The 1746-HSCE2 is widely used in industrial systems that require precise counting and motion feedback:
Its ability to handle very fast signals makes it ideal for dynamic and real-time control environments.
Ultra-high-speed counting
Supports input frequencies up to 1 MHz, ensuring accurate signal capture even in fast-moving systems.
Flexible input configuration
Can operate with single-ended or differential encoder signals.
Multiple counting modes
Supports quadrature, up/down, and rate calculation, covering a wide range of applications.
Integrated outputs
Provides both physical and virtual outputs for control and signaling.
Independent operation
Processes high-speed data without relying on the PLC scan cycle.
High reliability
Designed for stable operation with electrical isolation and industrial-grade durability.
Below are 5 related models within the same SLC 500 series or similar functional category:
| Model | Series | Function | Power | Dimensions (mm) | Weight kg( ) |
|---|---|---|---|---|---|
| 1746-HSCE | SLC 500 | High-speed counter module | 24V DC | 145 × 171 × 130 | 0.40 |
| 1746-HS | SLC 500 | Motion control module | 24V DC | 264 × 189 × 58 | 0.14 |
| 1746-NI4 | SLC 500 | Analog input module | 24V DC | 145 × 171 × 130 | 0.40 |
| 1746-NO4V | SLC 500 | Analog output module | 24V DC | 145 × 171 × 130 | 0.45 |
| 1746-A10 | SLC 500 | 10-slot chassis | External | 483 × 171 × 145 | 2.2 |
These modules are commonly combined to build complete systems involving motion, measurement, and control.
Below are 5 widely used models from the same brand in industrial automation systems:
| Model | Product Type | Key Function | Power | Dimensions (mm) | Weight kg( ) |
|---|---|---|---|---|---|
| 1747-L551 | PLC CPU | Modular controller | 24V DC | 145 × 140 × 130 | 0.95 |
| 1756-L73 | PLC Processor | High-performance control | 24V DC | 145 × 140 × 130 | 0.90 |
| 1769-L33ER | Compact PLC | Integrated automation control | 24V DC | 118 × 87 × 87 | 0.50 |
| 1734-IE2C | I/O Module | Analog input module | 24V DC | 56 × 12 × 75 | 0.15 |
| 1756-IF16 | Analog Input Module | Multi-channel input | 24V DC | 137 × 140 × 130 | 0.40 |