Product Details
Product Description
Allen-Bradley Counter / Flowmeter Input Module – Model: 1746sc-CTR4 The 1746sc-CTR4 is a specialized input module for the Allen-Bradley SLC 500 series, designed to handle counter and flowmeter applications. It supports multiple input types including single-ended counters, quadrature encoding, and enable control lines. With high-speed counting capability, selectable filters, and precise accuracy, this module is ideal for industrial measurement and monitoring tasks.
Technical Specifications
-
Manufacturer: Allen-Bradley (Rockwell Automation)
-
Product Line: SLC 500
-
Model: 1746sc-CTR4
-
Type: Counter / Flowmeter Input Module
-
Number of Inputs: 4 differential counter inputs
-
Quadrature Encoding: 2 channels supported
-
Enable Control Lines: 2 channels
-
Input Voltage Ranges: AC (50 mV–75 V peak), DC (5 V, 12 V, 24 V)
-
Input Frequency: Up to 50 kHz (AC and DC)
-
Counter Speed: 0–50 kHz
-
Maximum Count Value: ±32K or ±8M depending on mode
-
Channel Update Time: 4 ms per channel
-
Input Impedance: 25 kΩ
-
Logic Levels: VIL ≤ 1.0 V, VIH ≥ 3.5 V, Vmax 75 V
-
Backplane Current Draw: 225 mA @ 5 VDC
-
Power Dissipation: 1.75 W max
-
Filters: Digital filter (50 kHz default, 30 kHz option), Analog filter (15 kHz)
-
Accuracy:
-
Count mode: ±1 count
-
Instantaneous rate: ±1% @ 50 kHz, ±0.001% @ 1 Hz
-
Average rate: ±1 Hz
-
Data Format:
-
Counter mode: -8,388,608 to +8,388,607
-
Rate mode: -32,768 to +32,767
-
Fault Detection: Over-range and under-range status bits for all modes
-
Slot Width: Single slot
-
Weight: 0.38 lbs (0.17 kg)
Application Scenarios
-
Flow measurement in industrial processes
-
High-speed counting applications in automation systems
-
Quadrature encoder feedback for motion control
-
Machine-level monitoring requiring precise rate and count accuracy
FAQ
Q: How many counter inputs does the 1746sc-CTR4 provide? A: Four differential counter inputs.
Q: Does it support quadrature encoding? A: Yes, two channels of quadrature encoding are supported.
Q: What is the maximum input frequency? A: Up to 50 kHz for both AC and DC signals.
Q: What controllers are compatible? A: It is designed for the Allen-Bradley SLC 500 series.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
Understanding the Main Types of Industrial Control Systems in Modern Automation
Industrial control systems (ICS) form the foundation of modern automation, ensuring safe and efficient operations. The main types—DCS, RTU, and PLC—manage processes, equipment, and communication across industries, each optimized for specific scales, response times, and operational environments.
Understanding PLC Redundancy in Industrial Automation: Ensuring Reliability and Continuous Operation
In industrial automation, PLC redundancy ensures uninterrupted control and system reliability. By using backup processors and communication paths, these systems instantly take over during failures, minimizing downtime and protecting critical operations, safety, and productivity in modern industrial environments.
Allen-Bradley AADvance Controllers: Scalable Safety and Performance for Modern Industrial Automation
Allen-Bradley AADvance Controllers provide advanced, modular control for complex industrial automation systems. Designed for both standard and safety-critical operations, they deliver powerful processing, flexible I/O, and scalable performance for next-generation process and factory automation.