Lenze 9400 Manual - Manual (Page 245)

Power supply modules
Wiring
Earthing of internal EMC filters
6
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245 EDS94SPP101 EN 7.1
6.6.4 Earthing of internal EMC filters
Device-internal EMC filters have been implemented to reduce interference emission.
These EMC filters are connected to protective earth to discharge interference currents.
Under certain conditions the EMC filters must be disconnected from:
ƒ Operation in an IT system
The devices are protected from damages or destruction due to incompatible
overvoltages in the case of an error (earth fault).
ƒ DC-bus operation
ƒ Operation with power supply modules or regenerative power supply modules
ƒ Operating multiple devices with a common filter
The EMC properties can only be reached by carrying out the described measures.
The triggering behaviour of applicable earth-leakage circuit breakers remains
undisturbed.
Overview of the measures
The measures can be carried out easily. They are prepared device-dependently, and their
mounting and wiring are described.
Device Measure
Controller
With installation backplane (GG1 ... GG3) Plug/unplug the plastic cap
Without installation backplane (GG6 ... GG7) Change the screwed connection
Without installation backplane (GG8S ... GG10) Activate the switch
Power supply modules
With installation backplane (GG1 und GG3) Plug/unplug the plastic cap
Without installation backplane (GG4 ... GG5) ---
Regenerative power supply module
With installation backplane (GG3) Plug/unplug the plastic cap
Suitable mains filter Change the screwed connection