Sailer Manual HPVFE Sailer Manual HPVFE
11
Safety Ground -
(PE)
This is the safety ground for the drive that is required by code. One of these points must be connected to adjacent
building steel (girder, joist), a floor ground rod or bus bar. Grounding points must comply with national and local
industrial safety Regulations and/or electrical codes.
Motor Ground
The motor ground must be connected to one of the ground terminals on the drive.
Shield Termination - SHLD
Either of the safety ground terminals located on the power terminal block provides a grounding point for the motor
cable shield. The
motor cable
shield connected to one of these terminals (drive end) should also be connected to
the motor frame (motor end). Use a shield terminating or EMI clamp to connect the shield to the safety ground
terminal. The conduit box option may be used with a cable clamp for a grounding point for the cable shield.
When shielded cable is used for
control and signal wiring
, the shield should be grounded at the source end only,
not at the drive end.
RFI Filter Grounding
Using single phase drives with integral filter, or an external filter with any drive rating, may result in relatively high
ground leakage currents. Therefore, the
filter must only be used in installations with grounded AC supply
systems and be permanently installed and solidly grounded
(bonded) to the building power distribution ground.
Ensure that the incoming supply neutral is solidly connected (bonded) to the same building power distribution
ground. Grounding must not rely on flexible cables and should not include any form of plug or socket that would
permit inadvertent disconnection. Some local codes may require redundant ground connections. The integrity of all
connections should be periodically checked.
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