Sumitomo Drive Technologies Invertek Drives Invertek Drives Manual Download

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| Optidrive P2 User Guide |

Version 3.07

www.invertekdrives.com

4.2. Protective Earth (PE) Connection

4.2.1. Grounding Guidelines

Adequate safety earthing must be provided in accordance with local wiring rules and codes of practice. The ground terminal of

each Optidrive should be connected back to the common safety earth bar to maintain touch potentials within safe limits. The ground

terminal of each Optidrive should be individually connected DIRECTLY to the site ground bus bar (through the EMC filter if installed).

Optidrive ground connections should not loop from one drive to another, or to, or from any other equipment. Ground impedance must

conform to local industrial safety regulations and/or electrical codes.
To meet UL regulations, UL approved ring crimp terminals should be used for all ground wiring connections.
The integrity of all ground connections should be checked periodically.

4.2.2. Protective Earth Conductor

The Cross sectional area of the PE Conductor must be at least equal to that of the incoming supply conductors.

4.2.3. Motor Ground

The driven motor must be locally connected to a suitable ground location to maintain touch potentials within safe limits. In addition, the

motor ground must be connected to one of the ground terminals on the drive.

4.2.4. 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.



Individual device should be used for each Optidrive.



The device must be suitable for protecting equipment with a DC component in the leakage current.



The device should be not sensitive to high frequency leakage current.

4.2.5. 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, refer to section

4.13. EMC Compliant Installation

on page 28.

4.3. Incoming Power Connection

NOTE

For IP20 Frame Size 8 it is important that the input supply phase orientation is correct, i.e. L1>L1, L2>L2, L3>L3, failure to do so

will result in a “

Ph-Seq

" trip.

Ensure there is at least 30 seconds between each power-on.

4.3.1. Suitability

All Optidrive P2 models are designed for use on a single phase or balanced three phase supply depending on the model.
For all models and ratings when working with an IT Supply network, or any power supply type where the phase to earth voltage may

exceed the phase to phase voltage (such as ungrounded supplies), the internal EMC filter and surge protection must be disconnected before

connecting the supply. Refer to section

10.6. Internal EMC Filter and Varistors – Disconnection Procedure on page 76

for further information.

For three phase supply models, a maximum of 3% imbalance is allowed between phases.

4.3.2. Cable Selection



For 1 phase ac supply, power should be connected to L1/L, L2/N.



For a DC Supply, the main power cables should be connected to L1/L, L2/N.



For 3 phase ac supplies, the mains power cables should be connected to L1, L2, and L3. Phase sequence is not important. Neutral