Grounding The Drive - Invertek Drives ODL-2-22075-1KF42-SN Installation & Operating Instructions Manual

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Grounding the Drive

Grounding Guidelines
The ground terminal of each Optidrive P2 Elevator drive should be individually connected DIRECTLY to the site ground bus bar (through the
filter if installed). Optidrive P2 Elevator drive ground connections should not loop from one drive to another, or to, or from any other
equipment. Ground loop impedance must confirm to local industrial safety regulations. To meet UL regulations, UL approved ring crimp
terminals should be used for all ground wiring connections.
The drive Safety Ground must be connected to system ground. Ground impedance must conform to the requirements of national and local
industrial safety regulations and/or electrical codes. The integrity of all ground connections should be checked periodically.
Protective Earth Conductor
The Cross sectional area of the PE Conductor must be at least equal to that of the incoming supply conductor.
Safety Ground
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.
Ground Fault Monitoring
As with all inverters, a leakage current to earth can exist. The Optidrive P2 Elevator drive is designed to produce the minimum possible leakage
current whilst complying with worldwide standards. The level of current is affected by motor cable length and type, the effective switching
frequency, the earth connections used and the type of RFI filter installed. If an ELCB (Earth Leakage Circuit Breaker) is to be used, the following
conditions apply: -

A Type B Device must be used

The device must be suitable for protecting equipment with a DC component in the leakage current

Individual ELCBs should be used for each Optidrive P2 Elevator drive.
Electrical Installation
Optidrive P2 Elevator User Guide V2.30
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