
8-56 Drive Functions MPH-02, MPB-02, MPD-02
DOK-INDRV*-MP*-02VRS**-FK01-EN-P
act
corr
act,
x x =
x
act
: uncorrected actual position value 1 or 2
x
act,corr
: corrected actual position value 1 or 2
Fig. 8-33: Actual position value for v(cmd) > standstill window (S-0-0124)
valuecorrectionx x
act
corr
act,
+=
x
act
: uncorrected actual position value 1 or 2
x
act,corr
: corrected actual position value 1 or 2
Fig. 8-34: Actual position value for v(cmd) < (-)standstill window (S-0-0124)
0/+1
S-0-0051/53, Pos. feedb. 1/2
value
S-0-0058, Reversal clear.
pos. cmd. value difference or
velocity command value
S-0-0124, Standstill window
S-0-0051/53, Pos. feedb.
1/2 value (corrected)
Fig. 8-35: Block diagram for backlash on reversal correction
The following procedure is recommended for determining the value for
parameter S-0-0058, Reversal clearance:
• by means of jog mode move axis in positive direction
• place dial gauge at appropriate spot of mechanical axis system and
set it to zero
• jog axis in negative direction until change in pointer deflection of dial
gauge is visible
The reversal clearance then is determined according to the following
calculation:
gaugedialcontrol XXclearancereversal ∆−∆=
∆X
control
: distance traveled from zero position of dial gauge according to
control display
∆X
dial gauge
: distance traveled according to dial gauge referring to its zero
position
Fig. 8-36: Determining the input value for S-0-0058
Determining the Reversal
Clearance
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