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  • 1746-HSCE2-3
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1746-HSCE2

Allen-Bradley 1746-HSCE2 | SLC 500 High-Speed Counter Module

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  • Manufacturer: Allen-Bradley

  • Product No.: 1746-HSCE2

  • Product Type: Counter Module

  • Product Origin: USA

  • Payment:T/T, Western Union

  • Weight: 340g

  • Shipping port: Xiamen

  • Warranty: 12 months

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Product Overview

The Allen-Bradley 1746-HSCE2 is a multi-channel High-Speed Counter Module for the SLC 500 platform. This intelligent module counts in both directions, handles single-ended and quadrature encoders, and provides 8 outputs (4 virtual, 4 real). It is ideal for counting, totalizing, and position monitoring applications.

Core Functionality

The 1746-HSCE2 accepts differential or single-ended inputs (±A, ±B, ±Z) with voltage ranges of 4.2-12Vdc (5V logic) or 10-30Vdc (24V logic). It supports up to 4 pulse counters or 2 quadrature counters with 24-bit counting (±8,388,607) in linear or ring mode. The module features a dedicated processor for signal processing and includes thermal cut-out protection for short circuits and overloads.

Technical Specifications

Parameter Value
Part Number 1746-HSCE2
Series SLC 500
Module Type High-Speed Counter Module
Inputs ±A1, ±B1, ±Z1, ±A2, ±B2, ±Z2
Input Voltage Range 4.2-12Vdc / 10-30Vdc
Max. Input Frequency 1 MHz
Min. Pulse Width 475 ns
Min. Phase Separation 200 ns
Counting Range ±8,388,607 (24-bit)
Outputs 8 total (4 virtual / 4 real)
Output Voltage Range 5-30 Vdc (sourcing)
Output Current (per ch) 1.0A max
Backplane Isolation 1000V
Channel-to-Output Isolation 500V
Backplane Current (5V) 250 mA
Update Time 1.5 ms
Thermal Dissipation 1.25W
Weight 0.34 kg (0.75 lbs)

Installation Guide

Install the 1746-HSCE2 in any available slot of the SLC 500 chassis. Connect input devices to the ±A, ±B, and ±Z terminals. For single-ended encoders, use the A and B inputs. For quadrature encoders, connect both differential pairs. Wire outputs to the real output terminals. Use shielded twisted-pair cable for inputs to reduce high-frequency noise, especially on low-frequency signals.

Engineering Advantages

This module delivers high-speed counting up to 1MHz with 475ns minimum pulse width. The 24-bit counter range supports extensive position monitoring. Thermal cut-out protection automatically shuts down channels during short circuits or overloads. The dedicated processor ensures reliable signal processing independent of the CPU scan cycle. Compatibility with RIO adapters extends its use in distributed systems.

Technical FAQs

Q1: Encoder types supported?
A1: Supports single-ended pulse counters (4 devices) or differential quadrature encoders (2 devices).

Q2: Input voltage selection?
A2: 4.2-12Vdc for 5V logic. 10-30Vdc for 24V logic. Choose based on encoder output levels.

Q3: Output current limits?
A3: 1.0A per channel. Module max 2.0A at 40°C and 1.5A at 60°C. Thermal protection activates on overload.

🏷️ Tags: Counter Module

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