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| Optidrive P2 User Guide |
Version 3.00
www.invertekdrives.com
4.3. Incoming Power Connection
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 10.5. Internal EMC Filter and Varistors – Disconnection Procedure on page 72 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
connection is not required.
For compliance with CE and C Tick EMC requirements, refer to section 4.10. Control Terminal Connections on page 24.
A fixed installation is required according to IEC61800-5-1 with a suitable disconnecting device installed between the Optidrive
and the main Power Source. The disconnecting device must conform to the local safety code / regulations (e.g. within Europe,
EN60204-1, Safety of machinery).
The cables should be dimensioned according to any local codes or regulations. Maximum dimensions for each drive model are
given in section 10.2. Input/Output Power and Current Ratings on page 68.
4.3.3. Fuse / Circuit Breaker Selection
Suitable fuses to provide wiring protection of the input power cable should be installed in the incoming supply line, according to
the data in section 10.2. Input/Output Power and Current Ratings on page 68.
The fuses must comply with any local codes or regulations in place. In general, type gG (IEC 60269) or UL type J fuses are
suitable; however in some cases type aR fuses may be required. The operating time of the fuses must be below 0.5 seconds.
Where allowed by local regulations, suitably dimensioned type B MCB circuit breakers of equivalent rating may be utilised in
place of fuses, providing that the clearing capacity is sufficient for the installation.
The maximum permissible short circuit current at the Optidrive Power terminals as defined in IEC60439-1 is 100kA.
The Optidrive provides thermal and short circuit protection for the connected motor and motor cable.
4.3.4. Optional Input Choke
An optional Input Choke is recommended to be installed in the supply line for drives where any of the following conditions occur:
The incoming supply impedance is low or the fault level / short circuit current is high.
The supply is prone to dips or brown outs.
An unbalanced supply system is used (3 phase drives) where the voltage levels during on load operation exceed the designed 3%
capacity of the Optidrive.
The power supply to the drive is via a busbar and brush gear system (typically overhead Cranes).
In all other installations, an input choke is recommended to ensure protection of the drive against power supply faults.
4.4. Operation of 3 Phase drives from a Single Phase Supply
A special function of Optidrive P2 allows all drives designed for operation on 3 phase supplies to be operated on a single phase
supply of the correct rated voltage at up to 50% of the nominal capacity.
For Example, Model Number ODP-2-64450-3KA4N can be operated on a single phase supply, 380 – 480 volts, with the
maximum output current limited to 45 Amps.
The supply must be connected to the L1 and L2 terminals of the drive.
4.5. Operation with DC Power Supply or Common DC Bus
Optidrive P2 models provide terminals to directly connect to the DC Bus for applications which require this. For further information on
using the DC Bus connections, please refer to your Invertek Drives sales Partner.
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Elec
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