ABB ACSM1 Firmware Manual page 70

70
Parameter
62.18 PROBE2 POS
• Rising edge of encoder DI1 (proximity switch signal) is detected at the first mark
of the belt. Position 0 mm is stored to signal
• Falling edge of encoder DI2 (proximity switch signal) is detected at the second
mark of the belt. Position 40 mm is stored to signal
• The reference distance between the marks is 60 mm and the measured distance
between the marks is 40 mm, thus the error is 20 mm:
(62.18 PROBE2 POS
PROBE1 POS
The error is stored to
Actual position of the encoder
ERROR
Note: Only after the active correction is finished is the next position latching enabled.
Drive control and features
Setting
0.060 m (=60 mm)
1.01 SPEED ACT
Encoder DI1
Encoder DI2
1.12 POS ACT
- 62.16 PROBE1
MEAS)] = (60 - 0) - (40 - 0) = 20 mm
4.18 SYNC
using positioning parameter and dynamic limiter settings.
Information
Reference position for actual position probe 2
MEASURED POSITION DIFFERENCE
4.03 PROBE1 POS
POS) - (4.04 PROBE2 POS MEAS
ERROR:
1.12 POS ACT is corrected according to
t
t
t
POSITION DERIVATION
t
MEAS.
4.04 PROBE2 POS
4.18 SYNC
MEAS.
- 4.03