14 | Optidrive CoolVert User Guide | Version 1.00 www.invertekdrives.com
3
Installation
3.2.2. Grounding Guidelines
The ground terminal of each Optidrive Coolvert should be individually connected DIRECTLY to the site ground bus bar (through the
filter if installed). Optidrive Coolvert 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 greater than 3.5mA to earth can exist. The Optidrive Coolvert 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 (or B+) 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 Coolvert as opposed to one protection device serving many.
Shield Termination (Cable Screen)
The safety ground terminal provides a grounding point for the motor cable shield. The motor cable shield connected to this terminal
(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.
3.3. EMC Compliant Installation
The Optidrive Coolvert is designed in compliance with stringent EMC standards. All models are supplied with an internal EMC
filter, which is specifically designed to reduce the emissions in conformity with harmonised European Standards. It is the installer’s
responsibility that the device or system within which the Optidrive Coolvert is incorporated, is in compliance with the Standards in
force in the country of use. The relevant EMC directive in force in the European Union is the EMC 2014/30/EU.
The Optidrive Coolvert is intended to be incorporated inside fixed installation devices, only installed by skilled individuals. Conformity
with the EMC Standard can only be achieved if the guidance provided in this chapter is strictly adhered to.
NOTE It is the responsibility of the installer to ensure that the final product containing the Optidrive Coolvert complies with any
standard necessary for that final product.
To Next Page
Loading...
