ABB ACSM1 Manual page 78

78
4.16 SYNC REF GEARED
t : Rising edge of encoder digital input DI1 signal (proximity switch signal) is
1
detected. The actual position is 20 mm (stored to signal
The distance between the follower position and the actual position is 15 mm - 20 mm
= - 5 mm
t : Rising edge of encoder digital input DI2 signal (proximity switch signal) is
2
detected when the actual position is 40 mm (stored to signal
MEAS).
According to parameter
follower should be 10 mm behind the master.
The following correction is calculated and stored as reference error
POS
(62.18 PROBE2 POS
PROBE1 POS
t : Error has been corrected and the follower is 10 mm behind the master. Cyclic
3
function is ready for a new correction if necessary.
Drive control and features
Encoder DI1
Encoder DI2
1.08 ENCODER 1 SPEED
1.12 POS ACT
4.03 PROBE1 POS MEAS
4.04 PROBE2 POS MEAS
4.18 SYNC ERROR
62.16 PROBE1 POS
ERR:
- 4.04 PROBE2 POS
MEAS) = (25 mm - 40 mm) - (15 mm - 20 mm) = -10 mm
t
t t
1
2 3
4.04 PROBE2 POS
and 62.18 PROBE2 POS
MEAS) - (62.16 PROBE1 POS
40 mm
35 mm
30 mm
25 mm
20 mm
MEAS).
4.03 PROBE1 POS
settings, the
4.05 CYCLIC
- 4.03