Rockwell Automation 22B PowerFlex 40 FRN 1.xx - 6.xx - Manual (Page 18)

1-8 Installation/Wiring
PowerFlex 40 Adjustable Frequency AC Drive FRN 1.xx - 6.xx User Manual
Publication 22B-UM001H-EN-E
RFI Filter Grounding
Using single phase drives with integral filter, or an external filter with
any drive rating, may result in relatively high ground leakage currents.
Therefore, the filter must only be used in installations with grounded
AC supply systems and be permanently installed and solidly
grounded (bonded) to the building power distribution ground. Ensure
that the incoming supply neutral is solidly connected (bonded) to the
same building power distribution ground. Grounding must not rely on
flexible cables and should not include any form of plug or socket that
would permit inadvertent disconnection. Some local codes may require
redundant ground connections. The integrity of all connections should be
periodically checked.
The PowerFlex 40 does not provide branch short circuit protection. This
product should be installed with either input fuses or an input circuit
breaker. National and local industrial safety regulations and/or electrical
codes may determine additional requirements for these installations.
Fusing
The PowerFlex 40 has been UL tested and approved for use with input
fuses. The ratings in the table that follows are the minimum
recommended values for use with each drive rating. The devices listed in
this table are provided to serve as a guide.
Bulletin 140M (Self-Protected Combination Controller)/UL489
Circuit Breakers
When using Bulletin 140M or UL489 rated circuit breakers, the
guidelines listed below must be followed in order to meet the NEC
requirements for branch circuit protection.
•
Bulletin 140M can be used in single and group motor applications.
•
Bulletin 140M can be used up stream from the drive without the
need for fuses.
Fuses and Circuit Breakers
!
ATTENTION: To guard against personal injury and/or equipment
damage caused by improper fusing or circuit breaker selection, use only
the recommended line fuses/circuit breakers specified in this section.
22B-UM001.book Page 8 Wednesday, January 22, 2014 11:04 AM