Possible Causes Of Error - HEIDENHAIN iTNC 530 Service Manual

The allocation of position encoder inputs to the axes can be found in the machine parameters
MP 110.x
The allocation of position encoder inputs to the spindle can be found in the machine parameters
MP 111.x
All position encoder inputs are EnDat-compatible.
The signal types 1 Vpp or 11µ App are set in MP 115.0 for position encoders that are connected
to the connectors X1 ... X6, X35 ...X38 on the MC.
For position encoders that are connected to the connectors X201 ... X214 on the CC 424,
MP 116.0 is applicable.
For other signal types (TTL, etc, adapters may be used.
--> See "Position Encoders" on page 13 – 180
The input frequency for position encoders that are connected to the MC on the connectors X1
... X6, X35 ...X38, are set in MP 115.2.
For position encoders that are connected to the connectors X201 ... X214 on the CC 424,
MP 116.2 is applicable.

17.1.2 Possible Causes of Error

17 – 280
Contamination of the position encoder
Damage of the position encoder
Scanning head (parallelism, distance, etc.)
Cable damaged
Signal may be disturbed by high frequency, strong magnetic fields, etc.
Penetration of humidity
Light unit defective (LED, light bulb)
Strong vibrations on the machine
Defective interface on the control
Caution
The amplitude of the reference marks is not monitored!
For example, if a reference mark is contaminated and thus cannot be evaluated, with
distance-coded encoders a corresponding error message (e.g., Reference marks: Incorrect
spacing) is generated. With encoders with a reference mark, an error message is not
generated immediately. The refernce run does not function properly and the axis moves,
e.g., to the limit switch.
HEIDENHAIN Service Manual iTNC 530