ABB ACSM1 Manual page 75

Master/Follower distance correction
The purpose of the master/follower distance correction is to measure the distance
between the two probe positions and compare it with the distance between
reference positions 62.16 PROBE1 POS
a deviation, a correction is carried out on both the drive synchron reference
SYNC REF GEARED
Note: In master/follower distance correction, the follower must always be in
synchron control mode. If the follower is not used in synchron control mode,
adjusting the drive synchron reference
operation of the drive, and the correction cannot be carried out properly.
Example 1: Roll-over axis application. Master and follower proximity switches are
located at 0°.
Parameter
60.02 POS AXIS MODE
60.05 POS UNIT
68.02 SYNC GEAR MUL
62.14 CYCLIC CORR
MODE
62.15 TRIG PROBE1
62.17 TRIG PROBE2
62.16 PROBE1 POS
62.18 PROBE2 POS
and
and actual position 1.12 POS
(4.16 SYNC REF
Setting Information
(1) Rollover Positioning is between 0 and 1 revolutions, ie,
after 360°, the position calculation starts from 0°
again.
(1) Degree All position values are in degrees
Same as for 68.03 Synchron gear ratio is 1.
SYNC GEAR DIV
(5) Cor M/F Dist Cyclic master/follower distance correction
(1) ENC1 DI1 _– Rising edge of encoder 1 digital input DI1.
Source of the actual position latching command
(proximity switch signal source)
(3) ENC1 DI2 _– Rising edge of encoder 1 digital input DI2.
Source of the master position latching command
(proximity switch signal source)
0° Reference position for the actual position probe
-120° Reference position for the master position probe,
ie, follower is 120° [(0°-120°)-(0°-0°)] behind the
master.
62.18 PROBE2 POS. If there is
ACT.
GEARED) will not affect the
Drive control and features
75
4.16