Resetting The Frequency Converter - HTC 270 EG Manual

Electronic error codes
Error code Cause
OLF Overload
OSF Excess voltage
USF Under-voltage
PHF Mains supply phase break Incorrect power supply to the frequency converter. Check the
OPF Motor phase break
7.3.1

Resetting the frequency converter

1. Switch off the machine by turning the Power knob to "O".
2. Wait until the display goes out.
3. Reset the emergency stop switch.
4. Start the machine by turning the Power knob to "I".
Tip!
The machine will not start if the Grinding knob is in the "FWD" position when
switching on the power.
7.3.2 Checking the last error code
For the buttons and knobs described here, see Figure 7-2,
38
Action
See OCF. Let the frequency converter cool down before
restarting.
Mains voltage too high or disturbance in the mains supply.
Check the supply voltage, change socket.
The connection cable is too long, poor connection or too many
consumers connected to the mains. Change socket, use shorter
cables and lower the speed.
fuses in the mains supply and the connection cable.
Check the motor's cables and connections.
HTC 270 EG
page 39
2.0