Wiring the installation backplane
Wiring
Disconnect internal PE connection
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50
EDK94ZPP0364 ZH/EN 2.0
5.3 Wiring
5.3.1 Disconnect internal PE connection
If power supply (and regenerative) modules are used in drive systems, the
measures for IT systems must be strictly observed for all interconnected devices
and irrespective of the mains type (TN, TT or IT). The measures are described in
the Mounting Instructions of the devices under the keyword ”IT system”.
The measures provide for the following:
ƒ Power supply modules: compliance with EMC category C2
ƒ Regenerative power supply modules: the protection of internal capacitors
The following describes the measures for the power supply (and regenerative)
module.
IT system
1
2
SSP94IT001
Fig. 5-3 Plugging the IT insulating cap onto the earthing jumper
Proceed as follows to disconnect the internal connection between the filters
and PE:
1. Remove IT insulating cap from the parking position in the installation
backplane.
– For this apply a screwdriver on the right or left and lever off the
insulating cap.
– Optionally the i nsulating cap can be carefully removed using an
appropriate pliers.
2. Attach IT insulating cap to the earthing jumper until it clicks into place.
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