Function library
Function blocks
9.2.57 Homing function (REF)
9-195
L
EDSVS9332S-D11 EN 3.0
Direct referencing
The home position is at the home position offset.
z Mode 20 (C0932 = 20):
– Directly after the activation (REF-ON = HIGH), the drive traverses from the actual position
(REF-ACTPOS) to the home position.
– Before that, the actual position (REF-ACTPOS) can be loaded with the input value
REF-ACTPOS-IN (see chapter 9.2.57.3).
– The route and direction of travel results from the actual position (REF-ACTPOS) and the
home position offset (C0934) set.
0
R E F - A C T P O S
H o m e p o s i t i o nS t a r t D i r e c t i o n
D i s t a n c e
H o m e p o s i t i o n o f f s e t ( C 0 9 3 4 )
D i s t a n c e
Fig. 9-152 Direct referencing; approach the home position with clockwise rotation
z
Mode 21 (C0932 = 21) like mode 20, but in addition:
– The actual position value (REF-ACTPOS) is stored when the mains is disconnected and
reloaded when the mains is connected.
9.2.57.3 Control via input signals
z REF-ON = LOW-HIGH edge starts homing:
– The input must remain on HIGH until the end of the homing process. Homing is aborted if
theinputissettoLOWbeforethehomepositionisreached.
z REF-ON = LOW interrupts homing:
– The drive decelerates to speed 0 at the adjusted ramp C0936.
– The inputs REF-N-IN and REF-PHI-IN are switched to the outputs REF-N-SET and
REF-PSET.
– Has no effect if homing is already completed (REF-BUSY = LOW).
z REF-POS-LOAD = LOW-HIGH edge
– The profile generator accepts the phase at the input REF-ACTPOS-IN as starting value in the
actual position value REF-ACTPOS.
– The function is only active if REF-ON = LOW
– The function is only active in the modes 20 and 21.
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