Lenze 931E/K Small Drives Control - Manual (Page 99)

Homing 6
l
99 SW−HB 13.0002−EN 4.1
Mode 1: Negative limit switch with zero pulse evaluation
With this mode, the drive traverses at search speed in negative direction until reaching the
negative limit switch. In Fig. 18, this is indicated by the rising edge (movement from CW to
CCW direction). Then the drive traverses back at crawl speed and searches for the exact
position of the limit switch. The zero position refers to the first zero pulse of the angle
encoder in positive direction from the limit switch.
1
931E_102
Fig. 18 Homing to the negative limit switch with zero pulse evaluation
0 Zero pulse
1 Negative limit switch
Mode 2: Positive limit switch with zero pulse evaluation
With this mode, the drive traverses at search speed in positive direction until reaching the
positive limit switch. In Fig. 19, this is indicated by the rising edge. Then the drive traverses
back at crawl speed and searches for the exact position of the limit switch. The zero
position refers to the first zero pulse of the angle encoder in negative direction from the
limit switch.
2
931E_103
Fig. 19 Homing to the positive limit switch with zero pulse evaluation
0 Zero pulse
1 Positive limit switch