Product Analysis: Allen-Bradley 1734-VHSC24
The Allen-Bradley 1734-VHSC24 is a Very High Speed Counter (VHSC) module belonging to the POINT I/O™ family. This 24V DC module is engineered for high-performance motion control and sensing applications where standard PLC input speeds are insufficient. It is capable of processing rapid pulse streams from encoders, flow meters, and proximity switches, providing real-time data for precise machine control.
Advanced Counting Capabilities
The 1734-VHSC24 features one high-speed counter channel with multiple inputs (A, B, and Z) to support quadrature encoders or simple pulse counting. It provides integrated outputs that can be configured to trigger based on specific count values, allowing for ultra-fast hardware-level response times without waiting for the PLC scan cycle. This makes it an essential component for bottling lines, high-speed packaging, and precision positioning systems.
Technical Characteristics
- Operating Voltage: 24V DC.
- Counter Frequency: Up to 1 MHz (with specific wiring).
- Inputs: A, B, and Z (Encoder support).
- Outputs: 2 localized high-speed outputs.
- Counter Modes: Counter, Encoder, Period/Rate measurement.
- Filter Times: Configurable input filtering to reduce noise.
| Parameter | Specification |
| Power Dissipation | 2.0 W max |
| Input Frequency (max) | 1 MHz |
| PointBus Current | 180 mA |
Industrial Precision
The 1734-VHSC24 module is designed for the high-reliability demands of Rockwell Automation systems. It includes comprehensive diagnostic LEDs to indicate module status and network activity, facilitating rapid troubleshooting. When paired with a 1734-TB or 1734-TBS base, it integrates seamlessly into the Logix5000 architecture via EtherNet/IP or DeviceNet.
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Achieve maximum counting precision by mounting this VHSC module on a 1734-TOP integrated terminal base.
