HEIDENHAIN iTNC 530 Service Manual page 38

Error message Possible cause of error
Additional information and descriptions in
the manual
AC00 CC The amplitude of the encoder signal is too
high or the signal for contamination is active.
amplitude too high
%.2s
Noise on motor encoder signal
Short-circuit in motor encoder cable
Motor encoder signal amplitude too high
Noise on signal
Scanning head too close to scale
For very old encoders: Incandescent lamp
too bright (spiral-wound filament short-
circuited)
8B00 <Achse> No encoder signal available
motor encoder
Interruption in motor encoder cable
defective
Signal amplitude of motor encoder is
missing or too small.
AC20 CC The maximum input frequency was
exceeded at an encoder input.
frequency too
high %.2s
Noise on motor encoder signal
AC40 CC ampl. The position encoder signal amplitude is too
small or the contamination signal is active.
too low %.2s
(position)
Interruption in encoder cable.
Encoder signal amplitude missing.
AC50 CC freq. too The maximum input frequency was
exceeded at a position encoder input.
high %.2s
(position)
Noise on the encoder signal
4 – 38
Measures for error diagnosis and/or
corrective action
Additional information and descriptions in
the manual
Check connection of motor encoder (ground
connection).
Check the motor encoder.
Adjust the scanning head.
See "Encoder Interface" on page 18 – 277.
Check connection of motor encoder.
Check the motor encoder.
Check the amplitude of the encoder signal.
See "Speed Encoders" on page 18 – 293.
Check connection of motor encoder (ground
connection).
Check the motor encoder.
Check encoder signal input frequency.
See "Speed Encoders" on page 18 – 293.
Check connection of encoder.
Check the encoder.
Check encoder signal amplitude.
Inform your service agency.
See "Encoder Interface" on page 18 – 277.
Check connection of encoder (ground
connection).
Check the encoder.
Check the input frequency of the encoder
signal.
See "Further Examination of Position and
Speed Encoders" on page 18 – 308.
HEIDENHAIN Service Manual iTNC 530