General Information - HTC 270 EG Manual

Electronic error codes
7 Electronic error codes
7.1

General Information

A common fault on grinders is that the motor is overloaded.
In the event of an error, the error code is shown in the display. The most common error
codes that may occur on the frequency converter in the control cabinet are listed below.
In the event of other errors, contact the HTC Service Centre.
7.2 Schneider Electric ATV12
Error Cause
code
OCF Excess current
OHF Overheating
InF / EEF Internal error
SCF Short circuit or earth fault
involving the motor
tnF Auto-tuning fault
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
7.2.1 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.
36
Action
The machine is running too fast or with too great a load. Lower
the speed, lower the load by changing the position of the weights
and check your tools. Check mechanical inertia, spin the
grinding discs.
Open the control cabinet and ventilate. Check the filter and the
cooling fans in the cabinet. Let the frequency converter cool
down before restarting.
Contact HTC Service Centre
Check the motor's cables and connections.
Check the motor's cables and connections.
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
2.0