Allen Bradley 1746-HSCE2 High-Speed Counter Module

Overview

The Allen-Bradley 1746-HSCE2 is a high-speed counter module designed for the SLC 500 system. It supports counting, totalizing, and position monitoring in industrial applications. The module operates with both single-ended and differential quadrature inputs and is capable of handling high-frequency signals up to 1 MHz. With built-in isolation, protection, and configurable outputs, the 1746-HSCE2 offers precise and reliable performance for demanding control systems.

Technical Specifications

Manufacturer:

• Brand: Allen-Bradley
• Part Number: 1746-HSCE2
• Series: SLC 500
• Module Type: High-Speed Counter Module

Input Specifications:

• Input Channels: ±A1, ±B1, ±Z1, ±A2, ±B2, ±Z2
• Input Voltage Range: 4.2V DC to 12V DC (at 5V DC operation), 10V DC to 30V DC (at 24V DC operation)
• Min. Pulse Width: 475 ns
• Min. Phase Separation: 200 ns
• Max. Input Frequency: 1 MHz
• Channel Isolation: 1000V backplane isolation, 500V channel-to-output isolation

Output Specifications:

• Outputs: 8 outputs (4 virtual, 4 real)
• Output Voltage Range: 5-30 VDC
• Max. On-State Current (per channel): 1.0 A
• Max. On-State Current (per module): 2.0 A at 40°C, 1.5 A at 60°C
• Max. On-State Voltage Drop: 0.5V
• Max. Off-State Leakage: 100 µA

Performance:

• Update Time: 1.5 ms
• Step Response: 100 ms in, 2.5 ms out
• Backplane Current (5V): 250 mA

Counter Capabilities:

• Counting Modes: Up to 4 pulse counters or 2 quadrature counters
• Counter Range: ±8,388,607 (24-bit)
• Preset Input: 1 preset input for counters 1 and 2 (no preset for counters 3 and 4)
• Input Types: Configurable for single-ended or differential pulse counting

Protection:

• Thermal Cut-Out: Protection against overload or short circuit
• Voltage Range: 4.2V to 30V DC

Compatibility:

• SLC 500 CPU Modules: Compatible with all SLC 500 CPUs
• Remote I/O: Works with 1747-ASB SLC Remote I/O Adapter (RIO)

Additional Specifications:

• Thermal Dissipation: 1.25 Watts
• Max Backplane Response: 0.7 to 1.6 ms
• Isolation Voltage: Tested to withstand 1000V

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