ABB ACSM1 Manual page 74

74
MASTER
(motor)
Proximity
Encoder DI1
switch
60°
t
Position ref. 90°
1
t
2
t : Rising edge of encoder digital input DI1 signal (proximity switch signal) is
1
detected when the master (motor) position should be 60°. The used position
reference is 90° (stored to signal
The master reference correction function calculates the position error,
POS
reference position:
4.05 CYCLIC POS ERR
90° = -30°
t : Error has been corrected and the follower (load) is in line with the master (motor).
2
Cyclic function is ready for a new correction if necessary.
Drive control and features
FOLLOWER
(load)
4.03 PROBE1 POS MEAS
4.05 CYCLIC POS ERR
°- 30°
X
4.16 SYNC REF GEARED
Real master position
ERR, which is the difference between the master (motor) position and the
=
Encoder DI1
4.18 SYNC ERROR
1.12 POS ACT
4.03 PROBE1 POS
62.16 PROBE1 POS
t
1
MEAS).
- 4.03 PROBE1 POS MEAS
t
2
90
-30
360 = 0
330
0
°
x
° °
x - 30
°
90
°
60
4.05 CYCLIC
= 60° -