Electronic error codes HTC 950 RX
40 1.0
7.2.1 Resetting the frequency converter
1. Turn off the machine by turning the start key to "Off".
2. Wait until the display goes out.
3. Reset the emergency stop switch.
4. Start the machine by turning the start key to "On".
Tip!
The machine will not start if the control ON/STOP is in the "ON" mode
when switching on the power.
7.2.2 Checking the last error code
1. Press and hold ESC until four dashes (----) are shown in the display.
2. Press ENTER when rdy (ready) is shown. SET is then shown in the display.
3. Press “arrow down” until SUP is shown in the display.
4. Press ENTER. FrH is shown in the display.
5. Press “arrow down” until LFt is shown in the display.
6. Press ENTER. The last error code is shown.
7.3 Schneider Electric ATV312
Error code Cause Action
OCF Excess current 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.
OHF Overheating 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.
IFx/EEF Internal error Contact HTC Service Centre
SCF Short circuit or earth fault
involving the motor
Check the motor's cables and connections.
tnF Auto-tuning fault Check the motor's cables and connections.
OLF Overload See OCF. Let the frequency converter cool down before
restarting.
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