1746-HSCE | Allen-Bradley SLC 500 High-Speed Counter Module 1-In/4-Out

The 1746-HSCE is a High-Speed Counter module designed for use in the SLC 500 series PLC systems. It provides high-speed input capabilities, allowing the system to count pulses from devices such as encoders, shaft position sensors, and tachometers. The module can handle up to 3 channels of high-speed inputs, each capable of counting at speeds of up to 100 kHz.

Key specifications of the 1746-HSCE module include:

• Input Channels: The module supports 3 high-speed counter input channels.
• Counting Speed: Capable of counting at speeds up to 100 kHz per channel.
• Input Types: Supports A/B quadrature, pulse (single input), and directional (for encoder signals).
• Output Signals: Provides status output signals for real-time monitoring.
• Voltage Range: The module operates with 5V DC logic levels.
• Compatibility: Compatible with the SLC 500 series PLC, including the 1746-L processors.
• Expansion: Can be used in conjunction with other I/O modules in the SLC 500 chassis.

For detailed specifications, refer to the user manual or datasheet.

Configuring the 1746-HSCE module involves setting up the module's properties in the RSLogix 500 programming environment:

1. Add the Module to the I/O Configuration: In RSLogix 500, add the 1746-HSCE module to the I/O configuration of the SLC 500 system.
2. Configure Input Types: Define the input types for each channel (e.g., quadrature, pulse, or directional) in the configuration software.
3. Set Counters: Configure the counting modes, including settings for preset values, scaling, and direction of counting for each input channel.
4. Define Input Scaling: Set the appropriate scaling factors for the input signals, converting pulses to meaningful values such as speed, position, or distance.
5. Configure Output Parameters: If required, configure output signals like overflow, underflow, or status signals.

Once configured, download the settings to the SLC 500 processor and test the configuration by observing the counters' response to input signals.

While the 1746-HSCE module is capable of high-speed counting, there are some limitations:

• The module can only handle up to 3 channels of counting at a time.
• The maximum counting speed is 100 kHz, which may not be suitable for applications requiring ultra-high-speed counting (for example, above 100 kHz)
• The module is limited to working within SLC 500 systems and cannot be used in other Rockwell PLC families (e.g., ControlLogix or CompactLogix).
• The module supports 5V DC logic levels, meaning it is not compatible with systems requiring higher voltage levels.

The user manual for the 1746-HSCE module can be obtained from the official Rockwell Automation website. Simply search for 1746-HSCE in the Product Documentation section to download the manual in PDF format. The manual contains detailed information on installation, wiring, configuration, programming, and troubleshooting.