ctrlX SAFETY "SafeMotion"
Replacing drive components
6. Reconnect the plug-in connectors
If the optional encoder is used as safety technology encoder, make sure
it is plugged into XG20 (XG20.n) or XG21 (XG21.n).
7. WARNING! Risk of accident caused by unintended axis motion! Axes with
absolute measuring systems lose their position data reference when the
encoder is replaced!
Therefore, the position data reference to the machine coordinate system
has to be reestablished after replacement.
8. WARNING! Risk of accident caused by unintended axis motion! When
replacing the encoder, make sure that the encoder assignment to the axis
is not interchanged.
If replacing of the axis encoder assignment cannot be prevented due to
organizational measures, the axis has to be validated again after replacing
the encoder.
9. Log the replacement in the safety-related documentation of the machine
(serial number, type, …).
11.2.4 Replacing the controller
The controller replacement is described in the application manual (firmware).
11.2.5
Replacing the cables
Comply with the safety instructions in the chapter “Safety instructions for elec-
tric drives and controls” when replacing cables!
WARNING
Lethal electric shock from live parts with more than
50 V!
Only disconnect or connect power connectors of the
cables if the system is de-energized.
Note the following before replacing cables:
− Comply with the instructions of the machine manufacturer.
− If ready-made cables by Rexroth are used, only replace defective cables
with cables of an identical type.
−
If no ready-made cables by Rexroth are used, check the assignment of new
cables for compliance with the connection diagram of the machine manu-
facturer; the cable cross section and the shielding also have to match!
−
WARNING! Risk of accident caused by unintended axis motion! When
replacing the encoder cables make sure that the encoder assignment of
the axis is not interchanged.
If the mentioned points are complied with, within the scope of the
“Integrated safety technology“ function, it is not required to repeat the accept-
ance test.
●
Open the main switch
● Make sure the main switch cannot be switched back on
● Disconnect the connections
When replacing the cables, cover the open ends of power lines with protective
caps if sprinkling with cooling liquid/lubricant or pollution may occur (admis-
sible pollution degree according to EN50178: 2).
● Replace cables
NOTICE
Material damage due to faulty power connectors!
Only connect or disconnect power connectors in clean
and dry state.
● Reconnect the connections
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