If your transducer reads 4mA at 0 bar and 20mA at 10 bar, the manual explains how to scale analog inputs using parameters like F4.15 (AI min input) and F4.18 (AI max corresponding percentage). Part 6: Troubleshooting – Error Codes in the CVF G3 Manual When the inverter stops with a red light, the manual’s error code table is your savior. Here are the most common ones:
If you see Err.OL (overload), do not simply increase the motor rated current. Instead, check parameter F6.02 (overload protection level). Setting this above the motor’s actual FLA will void the motor warranty and can cause a fire. Part 7: Maintenance Schedule from the Manual The final section of the Convo Inverter Cvf G3 Manual is often overlooked: maintenance. Convo Inverter Cvf G3 Manual
Maintain 5.0 bar of pressure in a water pipe using a 4-20mA pressure sensor. If your transducer reads 4mA at 0 bar
| Parameter | Value | Explanation (from manual) | | :--- | :--- | :--- | | | 0 | 0 = Keypad command (Run/Stop from inverter keys) | | F0.01 | 0 | 0 = Keypad potentiometer for frequency setting | | F1.01 | 380V (or 220V) | Motor rated voltage (from motor nameplate) | | F1.02 | 5.0A | Motor rated current (critical for overload protection) | | F1.03 | 1420 RPM | Motor rated speed | | F2.00 | 5.0 sec | Acceleration time from 0Hz to 50Hz | | F2.01 | 5.0 sec | Deceleration time (increase if overvoltage trips) | Instead, check parameter F6
| Error Code | Name | Likely Cause (Per Manual) | Solution | | :--- | :--- | :--- | :--- | | | Overcurrent at acceleration | Short circuit, wrong motor parameters, or too fast ramp | Increase acceleration time (F2.00). Check motor insulation. | | Err.OC2 | Overcurrent at deceleration | Braking resistor missing, regenerative overvoltage | Add braking resistor or increase decel time (F2.01). | | Err.OC3 | Overcurrent at constant speed | Load shock, mechanical jam | Reduce load or check gearbox. Enable torque limit (F7.xx). | | Err.Ou1 | Overvoltage | Inverter braking too much energy | Increase decel time or install braking unit. | | Err.Ou2 | Undervoltage | Input power sag, missing phase on R,S,T | Check incoming supply voltage and wiring. | | Err.OH | Overheat | Fan failure, ambient too high ( >40°C) | Clean heatsink, replace fan. Reduce carrier frequency (F0.19). | | Err.SC | Short circuit | Motor wiring short to ground | Use a megger to test motor and cable. |