8-8 Electromagnetic Compatibility (EMC) Rexroth IndraDrive
DOK-INDRV*-SYSTEM*****-PR02-EN-P
To connect the shield at the motor, a suitable PG gland with shield
connection can be used (e.g. "SKINDICHT SHV/SRE/E" from the Lapp
Company, Stuttgart). Make sure that the connection between the motor
terminal box and the motor housing has a low impedance. If necessary,
use an additional grounding strap between them. Never use plastic motor
terminal boxes!
For operation at ungrounded mains it is recommended to galvanically
decouple the drive system with the mains filter from the mains via an
isolating transformer, if ground fault detection or monitoring is to remain
effective in the installation.
Please note that residual-current-operated circuit-breakers trigger
accidentally as a result of larger leakage current when connecting mains
filters.
If the drive system is nevertheless operated directly at the ungrounded
mains, make sure that
• the ground fault detection of the mains does not trigger accidentally
and
• the interference suppression, that now is only activated via the
parasitic mains capacitances of the ungrounded mains, is still
sufficient to comply with the limit values required by the application.
Ungrounded Mains
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