HEIDENHAIN iTNC 530 Service Manual page 49

Error message Possible cause of error
Additional information and descriptions in
the manual
MC frequency too The maximum input frequency was
exceeded at an encoder input.
high %.2s
MC NC See "Temperature too high (CPU%1 :=
%2°C)".
temperature out
of tol.
%.2s encoder: The amplitude of the encoder signal is too
high or the contamination signal is active.
amplitude too
large
%.2s encoder: The amplitude of the encoder signal is too
small or the signal for contamination is
amplitude too
active.
small
%.2s-measuring Contradiction apparent from comparison of
absolute and incremental positions
system defective
%.2s encoder: The maximum input frequency was
exceeded at an encoder input.
frequency too
high
NC: Pprogram After the control was switched on, a file in
NC memory was found faulty and deleted.
memory erased
EMERGENCY The internal or external EMERGENCY STOP
circuit is found by the system CPU to be
STOP defective
defective.
Relays, safety contactor combinations are
defective or too slow.
Input I3 (X42/4) is permanently at 24 V.
MC defective
Excessive offset During offset adjustment (with code number
or cyclic) an offset voltage of more than 100
in <axis>
mV was determined.
July 2010
Measures for error diagnosis and/or
corrective action
Additional information and descriptions in
the manual
Check encoder signal input frequency.
See "Further Examination of Position and
Speed Encoders" on page 18 – 308.
See "Temperature too high
(CPU%1:= %2 °C)".
Check the amplitude of the encoder signal.
See "Position Encoders" on page 18 – 277.
Check the amplitude of the encoder signal.
See "Position Encoders" on page 18 – 277.
Inform your service agency.
See "Encoder Interface" on page 18 – 277.
Check encoder signal input frequency.
See "Further Examination of Position and
Speed Encoders" on page 18 – 308.
Create the file again.
See "Restoring Data" on page 13 – 197.
Check the emergency-stop circuit.
Check input I3 (See "Checking the "Control
is ready" output and input (EMERGENCY
STOP chain)" on page 16 – 233).
Replace relays, safety contactor
combinations.
See "Error message: EMERGENCY STOP
defective" on page 16 – 236.
Inform your service agency.
See "Analog Speed Command Interface" on
page 20 – 344.
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