Description
Description: 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.
Technical Specifications for 1746-HSCE
| Manufacturer | Rockwell Automation |
| Operating Temperature | 0°C to +60°C (+32°F to +140°F) |
| On-State output Current | 16 mA at 4.5V dc 40 mA at 10V dc; 40 mA at 10V dc 125 mA at 30V dc |
| No. of outputs | Four (4) open-collector outputs |
| Max. Input Frequency | Sequencer and Range: 50k Hz Rate: 32.767k Hz |
| Min. Pulse separation | 4.5 µs |
| Min. Pulse width | 10 µs |
| Input voltage | ±5V dc (Differential); 0-5VDC (Single-ended) |
| No. of channels | One (1) counting channel |
| Recommended cable | Belden 9503 or equivalent |
| Maximum cable length | 305 m (1000 ft) |
| Backplane Current | 320 mA at +5V; 0 mA at +24V |
| Storage Temperature | -40°C to +85°C (-40°F to +185°F) |
| Brand | Allen-Bradley |
| Relative Humidity | 5 to 95% (without condensation) |
| Part Number/Catalog No. | 1746-HSCE |
| Series | SLC 500 |
| Module Type | High-Speed Counter module |
| Inputs | 1 Count Input |
| Outputs | 4 |
| Input Frequency Range | 50 kilohertz |
| Backplane Current (5 Volts) | 32 milliamps |
| I/O Connection | 1746-RT25G |
| Update Time | 4.8 milliseconds |
| Slots | 1 |
| Step Response | 100 milliseconds in, 2.5 milliseconds out |
| Isolation Voltage | 1500 Volts |
The Allen-Bradley 1746-HSCE is a High-Speed counter module from the SLC 500 Product family. This module is installed to any type of SLC500 chassis and mounted directly to an available slot. It may be installed locally, along the SLC500 CPU, or remotely along a SLC500 communication adapter. 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. The 1746-HSCE also has Four (4) open collector outputs which operate at voltage levels of 4.5 to 10V dc and (Switch 2 on) and 10 to 30V dc (Switch 2 off) with ON-state current ratings of 16 mA at 4.5V dc 40 mA at 10V dc and 40 mA at 10V dc 125 mA at 30V dc. For troubleshooting and diagnostics, it has built-in diagnostic LEDs such as CPU fault LEDs, fault code, error code. It also has an internal status word residing within the input data files. It is intended for use in an industrial environment and must be installed in a NEMA rated enclosure.
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