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Commissioning
Functional earth
Only the functional earth (FE) is used for the XM2x controls, exten-
sion modules and the S20 components. The functional earth is only
used to discharge disturbances. For individuals, the functional earth
is not intended as protection against electric shock.
The control is grounded via the top-hat rail. The top-hat rail, on which the con-
trol is mounted, has to be mounted to a grounded metal carrier, e. g. the rear
panel of the control cabinet.
The XM2x control and the S20 I/O modules are provided with FE springs (metal
clips) at their bottom side creating an electric connection to the mounting rail
while mounting.
If necessary, provide the top-hat rail with a separate grounding connection.
Potential equalization
Potential equalization acc. to DIN VDE 0100 part 540 has to be provided be-
tween the system parts and the voltage supply.
10.7.5 Shielding
NOTICE
Provide sufficient shielding.
The shielding reduces any effects of interferences on the system.
Observe the following when shielding:
Fasten the shielding as extensively as possible
●
Ensure proper contact between connector and terminal
●
Avoid damaging or squeezing conductors
●
Note the wire specifications when connecting the shielding
●
Shield the closest possible to the signal terminal points
●
Route all power cables and data cables in separate cable channels.
11 Commissioning
11.1 Commissioning steps
To commission the device, proceed as follows:
Bosch Rexroth AG R911340667_Edition 04
IndraControl XM21, XM22 Controls
Control failure due to insufficient shielding
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