VT-VRPD-2 is a digital amplifier for proportional valves with electrical position feedback of type 4WRE 6, component series 2X 4WRE 10, component series 2X.
The VT‑VRPD‑2 is a digital valve amplifier designed for proportional valves with electrical position feedback. It features a micro‑controller, configurable analog and digital inputs, and supports up to 32 amplifiers on a local bus.
The manual provides detailed technical data, pin assignments, circuit diagrams, LED indicator functions, and installation/maintenance notes, as well as guidance for using the BODAC PC software for configuration and parameterization. This manual is written in Chinese.
| Operating voltage | 24 VDC ±40% -10% |
|---|---|
| Current consumption (run) | 1.5 A |
| Standby current | 270 mA |
| Fuse rating | 4 A slow‑blow |
| Digital input voltage range | 0–5 V |
| Analog input voltage range | 0–+10 V |
| Analog output voltage range | 0–+10 V |
| Coil current per valve | 2.5 A |
| Oscillator frequency | 5.7 kHz |
| Control value scan time | 2 ms |
| Operating temperature range | 0 °C to 50 °C |
The amplifier operates from 24 VDC with a tolerance of +40 % to –10 %.
It provides four binary‑coded digital inputs for calling stored parameter sets.
Up to 32 VT‑VRPD‑2 amplifiers can be interconnected via the local bus.
The serial interface uses an RS‑232 connection with a D‑type socket on the front panel.