Emerson PACMotion VFD Series - Incoming Power Connection

26 PACMotion VFD AC Variable Speed Drive User Guide GFK-3111A
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.
WARNING
Ensure there is at least 30 seconds between each power-on.
Suitability
All PACMotion VFD 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 lter and surge protection must be disconnected before connecting the supply. Refer to section Internal
EMC Filter and Varistors – Disconnection Procedure on page 89 for further information.
For three phase supply models, a maximum of 3% imbalance is allowed between phases.
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 refer to page 34.
• A xed installation is required according to IEC61800-5-1 with a suitable disconnecting device installed
between the PACMotion VFD 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 Input/Output Power and Current Ratings on page 84.
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 Input/Output Power and Current Ratings on page 84.
• 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 (exception: Eaton Bussmann FWP series must be used for size 6A & 6B IP20
models); 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 sufcient for the installation.
• The maximum permissible short circuit current at the PACMotion VFD Power terminals as dened in
IEC60439-1 is 100 kA.
• The PACMotion VFD provides thermal and short circuit protection for the connected motor and motor
cable.