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Commissioning, operation and maintenance
Measuring of the relative position
of the primary to the secondary
Calculation of P-0-0523, Commu‐
tation adjustment measured value
Motor constant k
for commuta‐
mx
tion adjustment
Bosch Rexroth AG R911330592_Edition 06
switching and axis motion. Commutation adjustment only needs to be carried
out on initial commissioning.
This procedure requires an absolute length measuring system.
Depending on the accessibility of the primary and secondary part in the ma‐
chine or system, the relative position of the primary to the secondary part
part
may be calculated in different ways:
a
Relative position reference point ①
b
Relative position reference point ②
l
Primary part length
p
Fig. 14-5:
Measuring of the relative position of the primary to the secondary
part
The position of the primary part must not be changed before the
procedure for commutation adjustment is completed!
The input value for P-0-0523 that is required for calculating the commutation
offset, is determined from the measured relative position of the primary part
with respect to the secondary part (Fig. 14-5, distance a or b, depending on
accessibility), and a motor-related constant k
P-0-0523
Commutation adjustment measured value in mm
a
Relative position reference point ① in mm (Fig. 14-5)
b
Relative position reference point ② in mm (Fig. 14-5)
k
Motor constant for commutation adjustment in mm
mx
l
Primary part length in mm
p
Fig. 14-6:
Calculation of P-0-0523, Commutation adjustment measured value
Ensure that the sign is correct when you determine P-0-0523,
Commutation adjustment measured value. If P-0-0523 is deter‐
mined with a negative sign, this must also be entered in the be‐
ginning of the setting procedure.
Primary part
MCP020
MCP030 / 040 / 070
Tab. 14-6:
Motor constant k
MCL Ironless Linear Motors
(Fig.
14-6
mx
k
mx
for commutation adjustment
mx
and Fig. 14-6).
in mm
24.1
49.6
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