HEIDENHAIN ND 287 User Manual - Manual (Page 60)

60
I Working with the ND 287 position display unit
I – 7 Er
ro
r messag
es
I – 7 Error messages
Overview
Various error messages may occur while you're using the ND 287.
The ND 287 always stores the last error of each error category. You
can acknowledge the error messages by pressing the C key, or by
applying an external signal to pin 2 of the D-sub connection X41.
The following overview will help you to diagnose the errors as quickly
as possible:
If a new error occurs before the last error has been
acknowledged, the last error that has occurred will
be displayed. After you have acknowledged the
last error, the previous error will be displayed again.
The ND always stores the last error of each error
category for acknowledgment.
Error message Error cause and corrective action
Error: Reference mark spacing The reference mark spacing defined in ENCODER SETUP in the INSTALLATION
SETUP menu does not match the actual spacing of the reference marks. 1
DSR signal missing The connected encoder has not sent a DSR signal.
EnDat connection problem The ND has detected a communication problem with the encoder (only EnDat).
Restart the encoder by unplugging and replugging the encoder cable, or switch the
position display unit off and then back on. 1
Error X1/X2: Input frequency too high The input frequency at encoder input X1 or X2 is too high (e. g., when the
traversing speed is too high). Use the diagnostic functions of the ND 287 to check
the encoder. 1
Error: Display overflow The measured value to be displayed is too large or too small. Set a new datum or
move within display range.
Position error X1/X2 Various reasons may cause the encoder (only EnDat) to set an error bit for axis X1/
X2. Restart the encoder by unplugging and replugging the encoder cable, or switch
the ND off and then back on. If the error recurs, use the ND's diagnostic functions
for a more detailed diagnosis of the error. 1
ERROR X1/X2: Encoder signal too
small
The encoder signal at input X1 or X2 is too small (e. g, when the encoder is
contaminated). Use the diagnostic functions of the ND 287 to check the encoder. 1