Festo Электромотор MTR-DCI - Manual (Page 34)

1. System summary
1-16
Festo P.BE-MTR-DCI-IO-EN en 1209d
Search for reference switch With this reference travel method, at first the drive moves at
search speed in a negative or positive direction until it
reaches the limit switch. It then moves back at creep speed:
The reference position lies at the point at which the reference
switch becomes inactive again when the drive moves back.
REF (-) AZ
REF (+)
1
2
AZ
+
—
1
Reference switch in negative direction
2
Reference switch in positive direction
Fig. 1/5: “Search for reference switch” reference travel method
If the drive stands on the reference switch at the start of ref-
erence travel, it will move in the opposite direction to the
reference switch. The drive then moves as usual to the axis
zero point.
Note
If a reference signal is not found by the “reference switch”
homing method before the drive reaches a fixed stop, the
MTR-DCI will stop and an error will be displayed (HOMING
ERROR).