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- Allen Bradley
- 1746SC-CTR4
- PLC Module/Rack
- USA
- 133 × 108 × 38 mm
- 0.3kg
- Xiamen, China
- New & In Stock
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We have a 10-year logistics and express cooperation agreement, so our products can be shipped to any place in the world.
Brand new and original
Our products are imported in bulk from the place of origin. Because of the cooperative relationship, our products are all original and 100% new.
24-hour service
We provide 7*24 hours service to our customers. We will be there whenever you need us.
Price advantage
All our products are priced very favorably because we have our own warehouse and supply.
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Allen Bradley 1746SC-CTR4 — Detailed Technical Overview
1. Product Introduction
The Allen Bradley 1746SC-CTR4 is a specialized high-speed counter and flow input module designed for modular PLC systems within the SLC 500 platform. Unlike standard digital input modules, this unit is built for processing pulse-based signals with high precision and speed.
It features four independent input channels that can be configured for different measurement modes, including counting, rate measurement, and quadrature encoder input. This allows it to handle signals from devices such as encoders, turbine flowmeters, proximity sensors, and pulse generators.
The module is installed directly into the SLC 500 rack and communicates with the processor through the backplane, enabling real-time data acquisition. Its design focuses on accurate signal processing, flexibility, and stable operation in industrial environments.
2. Product Parameters
Technical Specifications
| Parameter | Value |
|---|---|
| Model | 1746SC-CTR4 |
| Series | SLC 500 |
| Module Type | High-Speed Counter / Flow Input |
| Number of Channels | 4 |
| Input Type | Counter / Encoder / Flowmeter |
| Input Voltage | 5V / 12V / 24V DC (typical), low-level AC supported |
| Input Voltage Range | Approx. 5–24 V DC |
| Maximum Input Frequency | Up to 50 kHz |
| Counter Resolution | Up to 24-bit (depending on mode) |
| Counting Modes | Up/Down, Quadrature, Rate |
| Accuracy | ±1 count |
| Minimum Pulse Width | Approx. 8 μs |
| Input Impedance | Approx. 25 kΩ |
| Power Consumption | < 2 W |
| Update Time | Approx. 4–6 ms |
| Isolation | Electrical isolation between channels |
| Status Indicators | Channel status LEDs |
| Operating Temperature | 0 to 60°C |
| Installation | Rack-mounted |
| Dimensions (mm) | 133 × 108 × 38 |
| Weight (kg) | 0.3 kg |
3. Product Applications
The 1746SC-CTR4 is used in applications that require precise counting, position tracking, or flow measurement.
Typical application areas include:
- Flow monitoring in liquid and gas systems
- Conveyor speed and length measurement
- Encoder-based position tracking
- Filling, batching, and dosing systems
- Packaging and labeling machinery
- Rotational speed measurement of motors and shafts
Its ability to handle high-frequency signals makes it suitable for dynamic processes where accuracy and response time are important.
4. Product Advantages
High-Speed Performance
Supports fast pulse inputs up to 50 kHz, enabling accurate tracking of rapid events.
Multi-Channel Flexibility
Four independent channels allow simultaneous monitoring of multiple sensors or processes.
Versatile Input Support
Compatible with various signal types including encoder outputs and flowmeter pulses.
Accurate Measurement
Provides precise counting and rate calculations with minimal deviation.
Reliable Operation
Designed for stable performance in industrial environments with electrical noise and temperature variation.
Easy System Integration
Fits seamlessly into SLC 500 racks and works directly with existing PLC architecture.
5. Brand Information
Allen Bradley is widely known in the industrial automation sector for producing control systems, PLC modules, and power solutions.
Its products are commonly used across manufacturing, infrastructure, and process industries due to their reliability and long service life.
6. Product Series
- Series Name: SLC 500
- Category: Special Function Module (High-Speed Counter / Flow Input)
The SLC 500 series is a modular PLC platform designed for flexible system configuration. It supports a wide range of digital, analog, and specialty modules, making it suitable for diverse automation applications.
7. Recommended Models (Same Series / Related)
Related Models Table
| Model | Function | Channels | Input Type | Dimensions (mm) | Weight (kg) |
|---|---|---|---|---|---|
| 1746-HSCE | High-Speed Counter | 2 | Encoder | 145 × 35 × 130 | 0.3 kg |
| 1746-HSTP1 | Stepper Controller | 1 Axis | Pulse Output | 145 × 35 × 130 | 0.35 kg |
| 1746-NI4 | Analog Input | 4 | Voltage/Current | 145 × 35 × 130 | 0.25 kg |
| 1746-ITB16 | Digital Input | 16 | 24V DC | 145 × 35 × 130 | 0.2 kg |
| 1746-OW16 | Digital Output | 16 | Relay | 145 × 35 × 130 | 0.3 kg |
8. Recommended Popular Models (Same Brand)
Popular Models Table
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