Power & Control Wiring; Connection Diagram; Protective Earth (Pe) Connection - Invertek Drives Optidrive E3 User Manual

4. Power & Control Wiring

4.1. Connection Diagram

A

Protective Earth (PE) Connection

B Incoming Power Connection
C Fuse / Circuit Breaker Selection
D Optional Input Choke
E Optional External EMC Filter
F Internal Disconnect / Isolator
G Optional Brake Resistor
H Motor Connection
I
J Auxiliary Relay Output
L
M
4.2. Protective Earth (PE) Connection
Grounding Guidelines
The ground terminal of each Optidrive should be individually connected DIRECTLY to the site ground bus bar (through the filter if
installed). Optidrive 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 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.
 T he device must be suitable for protecting equipment with a DC component in the leakage current.
 I ndividual ELCBs should be used for each Optidrive.
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Key
Analog Output
Analog Inputs
Digital Inputs
M
Sec. Page
4.2 14
4.3 12
4.3.2 14
4.3.3 12
4. 1 0 15
4.3 12
4. 1 1 18
4.8. 1 16
4.8.2 17
4.8.3 17
4.8.4 17
Version 1.00 | Optidrive ODE-3 User Guide | 11
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