Consultation on frequency converter VFC3610 (Bosch Rexroth)
Thread Content
For the frequency converter VFC3610 (Bosch Rexroth), how can the water pressure be adjusted using this frequency converter? It seems to have a pressure transmitter that outputs signals in the range of 0–200 mA; what corresponding water pressure does this represent? What are the specific steps for carrying out this adjustment?
You didn’t explain it in more detail. If it’s an inverter, the speed of the motor is usually adjusted through the inverter, and thus the pressure is regulated by controlling the speed of the motor. If it’s a pressure transmitter, it typically sends out 4–20 MA signals; as for what pressure this corresponds to, it depends on the configuration of the transmitter. In the case of automatic regulation, a simple PID loop can be used for control
Well, it should be a 4–20 MA signal; I’m not sure exactly how to set that up
If manual adjustment is used, then in the DCS, a manual operator needs to be configured to manually set the value of the output; this value usually ranges from 0% to 100%, corresponding to a 4–20 MA signal for the output channel, which in turn serves as the control signal for the frequency converter. In the case of automatic control, a PID regulator is configured in the DCS; the input to the PID is the water pressure signal, while its output serves as the control signal for the frequency converter.