HTC 420 VS User Manual - Page 39
Browse online or download pdf User Manual for Floor Machine HTC 420 VS. HTC 420 VS 46 pages. Floor grinder | concrete floor sander
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HTC 420 VS
4.
5.
6.
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
1.
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.
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