ABB ACSM1 Manual page 79

Distance correction with one probe
The purpose is to measure the distance between two consecutive latches from one
probe and compare it with the distance of the reference positions
POS and 62.18 PROBE2
carried out on drive actual position
signal source (eg, encoder interface digital input DI1) and latch command (eg, rising
edge). If the application requires different latch commands, see section
correction with two probes
Example:
The following figure shows a conveyer system where a box should be positioned.
The conveyer belt is marked every 40 mm.
ENCODER MOTOR
M
3~
Encoder DI1
Parameter
60.02 POS AXIS MODE
60.05 POS UNIT
62.14 CYCLIC CORR MODE (3) 1 Probe Dist
62.15 TRIG PROBE1
62.16 PROBE1 POS
62.18 PROBE2 POS
POS. If there is a deviation, a corresponding correction is
1.12 POS
on page 81.
40 mm
GEARBOX
PROXIMITY SWITCH
Setting
(0) Linear
(2) Meter
(1) ENC1 DI1 _–
0 m
0.040 m (= 40 mm)
62.16 PROBE1
ACT. Both latches use the same latch
Information
Positioning between minimum position
MINIMUM POS and maximum position
MAXIMUM POS
All position values are in metres
Distance correction with one probe
Rising edge of encoder 1 digital input DI1.
Source of the actual position latching
command (proximity switch signal source)
Reference position for position probe 1
Reference position for position probe 2
Drive control and features
79
Distance
60.14
60.13