Festo Электромотор MTR-DCI - Manual (Page 37)

1. System overview
1-17 Festo P.BE-MTR-DCI-PB-EN en 1209a
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. Then it moves back at crawl 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 is at the reference switch at the start of reference
travel, it will move in the opposite direction from the refer-
ence switch. The drive then moves as usual to the axis zero
point.