HEIDENHAIN ND 930 - Manual (Page 36)

36
Connecting the Encoders
Your display unit will accept all HEIDENHAIN linear encoders with
sinusoidal output signals (11 to 40
µ
A
pp
) and distance-coded or single
reference marks.
Assignment of the encoder inputs for the ND 930
Encoder input X1 is for the X axis
Encoder input X2 is for the Z axis
Assignment of the encoder inputs for the ND 970
Encoder input X1 is for the X axis
Encoder input X2 is for the Zo axis
Encoder input X3 is for the Z axis
Encoder monitoring system
Your display unit features a monitoring system for checking the
amplitude and frequency of the encoder signals. If it detects a faulty
signal, one of the following error messages will be generated:
AMPL.X TOO LOW
AMPL.X TOO HIGH
FRQ. EXCEEDED X
Encoder monitoring can be activated with parameter P45.
If you are using linear encoders with distance-coded reference marks,
the encoder monitoring system also checks whether the spacing of the
reference marks as defined in parameter P43 is the same as the actual
spacing on the scales. If it is not, the following error message will be
generated:
ERROR: REF. X
Z X Zo
X3 X2 X1
Connecting the Encoders