Allen-Bradley1746-HSCE High-Speed counter module

The Allen-Bradley 1746-HSCE is a High-Speed counter module. This module is part of the SLC500 Programmable Logic Controller (PLC) platform. It features bidirectional counting and comes with inputs A, B and Z compatible with nominal signal voltages of 5VDC differential input and 0-5VDC single ended input with maximum input frequency of 50 kHz. It also has a limit switch input and Four (4) open collector outputs. It may be configured to operate in Range, Rat and Sequencer mode.

The 1746-HSCE is used for bidirectional counting requirements, motion detection, totalizing and other applications that require processing of High-Speed discrete inputs. This module is typically found in factory automation applications however, highly applicable as well in process automation requirements. This high-speed counter module may be configured to operate in different modes such as Range mode, Rate mode and Sequencer mode.

The 1746-HSCE features input A, B and Z with nominal input voltage of 5VDC for differential wiring and 0-5VDC for Single-ended wiring. It accepts a minimum pulse width of 10 µs duration with pulse separation of 4.5 µs. The accepted input frequencies of these input sets depend on the configured mode of the module. When operating as Sequencer mode, the compatible maximum input frequency is 50 kHz and 32,767kHz when operating in Range Rate mode. Additionally, the 1746-HSCE has a limit switch input with ON-state voltage range of 3.8-5.4VDC, 9.4-16.5VDC and 16.5-30VDC @ 5VDC, 12VDC and 24VDC nominal voltages, respectively.