Determination Of Backlash And Activation Of Backlash Compensation - Siemens SIMATIC S7-300 Manual

Fm 354 servo drive positioning module
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Starting up the FM 354
Parameterization
MD31 – Set directional
reference of backlash
Set
Activate machine data
Set
Speed level 1 = 0.1
Speed level 2 = 0.5
Set
Servo enable = ON
Select
Mode = Relative incremental
Increment = 3
OVER = 10 %
Start axis
Direction as in MD31
Zero gauge on machine part to be
Start axis
Direction opposite to MD31
Read traveled distance on
Determine backlash value
Backlash=Increment - measured distance
Further testing for checking or to take
Yes
Further testing at another position to
Select
Mode = jogging
Speed level 2
OVER = 100 %
Start axis
Move to new measuring position
Set
Activate machine data
Fig. 7-15 Determination of backlash and activation of backlash compensation
7-26
Initial backlash value MD30 = 0 (see Table 7-3)
v
max
v
max
positioned
gauge
mean?
No
take mean?
No
Yes
Yes
DB increments, value 3 = e.g. 100 MSR
(see Table 7-2)
Gauge, e.g. dial gauge or laser gauge
Please note:
Negative backlash values may occur during
repeat tests if there is overcompensation
Take the mean for all partial
results
Parameterization
MD30 – Add backlash to value in
effect to date, with correct sign
Check for efficacy of correction?
No
END
FM 354 Servo Drive Positioning Module

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