1756-HSC | Allen-Bradley | ControlLogix High-speed Counter Module

Allen Bradley 1756-HSC Overview

The Allen Bradley 1756-HSC is a high-speed counter module designed for ControlLogix controllers. It includes four high-speed counters that can count various signals such as encoder pulses, frequency inputs, and event inputs. Additionally, it features four discrete outputs for controlling external devices based on counter values.

Technical Specifications

• Manufacturer: Allen-Bradley

• Product No.: 1756-HSC

• Product Type: ControlLogix High-Speed Counter Module

• Module Location: 1756 ControlLogix Chassis

• Backplane Current:

  • 300 mA @ 5.1V DC
  • 3 mA @ 24V DC (1.6 W)

• Maximum Power Dissipation: 5.6 W @ 60°C

• Thermal Dissipation: 19.1 BTU/hr

• Number of Counters: 4

• Inputs per Counter: 3 (A, B, Z for Gate/Reset)

• Count Range: 0 - 16,777,214

• Number of Outputs: 4 (2 outputs per counter)

• Output Control: Assignable outputs for each counter channel with 2 “turn-on” and “turn-off” preset values per output

• Maximum On-State Voltage Drop/Output: 0.55V

• Current Limit: <4A

• Output Short Circuit Protection: Electronic; remove load and toggle output On-Off to restore

• Reverse Polarity Protection: Yes (incorrect wiring may permanently disable module outputs)

• Module Keying (Backplane): Software configurable