1010 HEIDENHAIN Technical Manual MANUALplus 620
MP_motEncCheckOff
Monitoring functions
Available from NCK software version: 597 110-01.
Format: Numerical value
Input: Bit 0 – Monitoring the reference mark
0: Monitoring active
1: Monitoring inactive
Bit 1 – Monitoring the direction of rotation
0: Monitoring active
1: Monitoring inactive
Default: 0
Access: LEVEL3
Reaction: RESET
In MP_checkRefDistance, define the monitoring of the datum-to-datum
distance of the spindle.
MP_checkRefDistance
Monitoring the reference mark of the spindle speed encoder
Available from NCK software version: 597 110-01.
Format: Selection menu
Selection: on
Monitor the reference mark of the speed encoder
off
No monitoring
Default: off
Access: LEVEL3
Reaction: RESET
For axes, monitoring of the rotational direction (MP_motEncCheckOff –
Bit 1) must not be deactivated. An error (e.g. one motor phase
interchanged with another or incorrect entry in the DIR column of the motor
table) might cause uncontrolled acceleration of the motor in one direction if
the monitoring function for the rotational direction is deactivated. This also
applies to spindles. For spindles, however, an incorrect acceleration in one
direction is less dangerous than for axes.
Monitoring of the direction of rotation (MP_motEncCheckOff – Bit 1) for
synchronous motors (entry SM in the column TYPE in the motor table) cannot
be switched off.