HEIDENHAIN ND 720 v.3 - Manual (Page 35)

35
Connecting
the
Encoders
Connecting the Encoders
Your display unit will accept all HEIDENHAIN linear encoders with
sinusoidal output signals (7 to 16 mA pp ) and distance-coded or single
reference marks.
Assignment of the encoder inputs
Encoder input X1 is for the X axis
Encoder input X2 is for the Y axis
Encoder input X3 is for the Z axis (ND 760 only)
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:
SIGNAL X
FRQ. 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:
ERR. REF. X
Z Y X
Bateil2.pm6 27.03.2002, 12:09 35