Electronic Error Codes - HTC 950 RX Manual

Electronic error codes

The HTC 950 RX™ is fitted with an advanced frequency converter The converter can provide an error code for certain errors
that assist when fault tracing. Always state the error code if possible when contacting support. For resetting see page 37.
Error code
OCF
OHF
InF / EEF
Cause
OCF = Rapidly rising current
Due to a high short-term load that is 2.5
times greater than nominal current for a
specific period. The error may arise if you
drive into something or if a grinding disc or
something in the grinder locks. Could also
occur if a short circuit on the motor side
occurs.
OHF = Rapidly rising current
A lower level of the same error given
above. This error may arise where there
is a heavy load. The error arises at 2
times nominal current for a specific period.
Frequently appears following high power
consumption for an extended period. The
error could also arise in hot conditions. (+
50 degrees)
InF / EEF = Internal error
Error in the inverter
3
Action
Check mechanical inertia, spin the grind-
ing discs. Do the discs spin sluggishly?
Reset the converter. Remove the contact
to the motor and start the converter to see
if the error remains. Also see the point
below. If the error remains the converter
will need a service.
As the error is related to the error men-
tioned above, the measures listed there
would be worth checking. If the surface
being processed is very tough , this may
cause problems. If the error is related to
temperature, the grinder must be allowed
to cool down before starting again. An-
other measure could be to reduce speed
to about half as the grinder will then use
less power.
Contact service department.