Bosch Rexroth IndraDrive MPH-02 Functional Description page 488

8-56
Drive Functions
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
Determining the Reversal
Clearance
x : uncorrected actual position value 1 or 2
act
x : corrected actual position value 1 or 2
act,corr
Fig. 8-33: Actual position value for v(cmd) > standstill window (S-0-0124)
x
act,
corr
x : uncorrected actual position value 1 or 2
act
x : corrected actual position value 1 or 2
act,corr
Fig. 8-34: Actual position value for v(cmd) < (-)standstill window (S-0-0124)
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:
reversal
∆X
: distance traveled from zero position of dial gauge according to
control
control display
∆X
: distance traveled according to dial gauge referring to its zero
dial gauge
position
Fig. 8-36: Determining the input value for S-0-0058
MPH-02, MPB-02, MPD-02
=
x x
act, act
corr
= +
x correction value
act
S-0-0051/53, Pos. feedb.
1/2 value (corrected)
0/+1
= ∆ − ∆
clearance X X
control
DOK-INDRV*-MP*-02VRS**-FK01-EN-P
dial gauge