HTC 420 VS Manuale d'uso - Pagina 39

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HTC 420 VS

7.3. Schneider Electric ATV12

Error code

Cause

OCF

Excess current

OHF

Overheating

InF

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

OPF

Motor phase break

7.3.1. Resetting the frequency converter

3.0

Press ENTER. FrH is shown in the display.

Press "arrow down" until LFt is shown in the display.

Press ENTER. The last error code is shown.

Switch off the machine by turning the Power knob to "O".

Electronic Error Codes

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 electrical cabinet and

allow to cool. 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.

Incorrect power supply to the

frequency converter. Check the

fuses in the mains supply and the

connection cable.

Check the motor's cables and

connections.