Description
Allen-Bradley 1771-VHSC Very High-Speed Counter Module
Description:
The Allen-Bradley 1771-VHSC is a precision very high-speed counter I/O module designed to integrate with PLC-5 automation systems for rapid pulse counting and real-time signal processing. This rugged module provides high-frequency counting capability and flexible configuration, making it ideal for demanding industrial applications such as motion feedback, encoder monitoring, and high-speed industrial automation tasks.
Built as part of the 1771 PLC family, the VHSC module combines 12 digital inputs (3 per counter) with 8 digital isolated outputs divided into two groups, enabling advanced counting, rate, period, and encoder modes — all with a fast 100 μs update period for maximum responsiveness. It supports multiple input signal types, including single-ended and differential inputs, and handles up to 1 MHz input frequency in single-channel counter mode.
Key Features
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Very high-speed counter module for PLC-5 systems
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4 programmable counters with up to 1 MHz input frequency capability
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12 digital inputs (3 per counter) and 8 isolated digital outputs
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Fast 100 µs module update period for real-time counting
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Supports rate, period, encoder, and counter modes
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Configurable for single-ended or differential signals
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Designed for industrial automation and position/encoder feedback
Typical Applications
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High-speed pulse counting tasks in manufacturing
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Encoder and rotary position feedback
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Motion control and indexing systems
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Packaging lines, robotics, and conveyor systems
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Industrial data collection and real-time signal processing
Product Details
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Manufacturer: Allen-Bradley / Rockwell Automation
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Model / MPN: 1771-VHSC
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Product Type: Very High-Speed Counter Module
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Digital Inputs: 12 (3 per counter)
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Digital Outputs: 8 isolated outputs (two groups)
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Module Update Time: ~100 µs
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Input Frequency: Up to 1 MHz (single-channel)
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Backplane Current: ~0.65 A
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Condition: New
PLC-5 Very High Speed Counter Module, 4 Input Channels
Weight: 0.7kg
SKU: 1771VHSC
Delivery: We ship via global express services, such as DHL, Fedex, Swiss Post.
Warranty: 3 Years AW warranty, for peace of mind.