Rockwell Automation LPM20 Liquid-Cooled AC Drive with High Performance Drive Control - Manual (Page 23)

Installation/Wiring 1-11
Verifying Power Module Input Ratings Match Supplied Power
It is important to verify that plant power will meet the input power
requirements of the LPM20 drive’s Power Module circuitry. See
Table 1.A
for input power rating specifications. Be sure input power to the drive
corresponds to the drive nameplate voltage and frequency.
AC Supply Source
Considerations LPM20 drives are suitable for use on a circuit capable of delivering up to a
maximum of 100,000 rms symmetrical amperes, and a maximum of 480 volts.
A circuit breaker with shunt trip as supplied with input drive components with
the appropriate kAIC rating must always be used upstream of the power module.
Unbalanced or Ungrounded Distribution Systems
LPM20 drives should not be used with a supply system that is ungrounded and
when the phase-to-phase voltage exceeds 125% of normal line-to-line voltage.
Input Power Conditioning
Certain events on the power system supplying a drive can cause component
damage or shortened product life. They are:
• The power system has power factor correction capacitors switched in and
out of the system, either by the user or by the power company.
• The power source has intermittent voltage spikes in excess of 6000 volts.
These spikes could be caused by other equipment on the line or by events
such as lightning strikes.
• The power source has frequent interruptions.
Wiring Requirements for the Drive
Certain drive requirements should be checked before continuing with the
drive installation. Wire sizes, branch circuit protection, encoder feedback (for
FVC regulation), and wiring to disable the drive are all areas that need to be
evaluated.
Operation of the drive can be disabled in two locations. Gate Kill terminal
block (A33) on the front of the power structure can be used to disable the
firing of inverter IGBTs. When the connection between terminals 1 and 2 is
opened, inverter IGBTs are disabled independent of any software control.
This action also generates fault 207 in the inverter to enunciate this
!
ATTENTION: To guard against personal injury and/or equipment
damage caused by improper circuit breaker selection, use only the
recommended circuit breakers specified in
Table 1.B .
!
ATTENTION: LPM20 drives contain protective MOVs on the
drive’s printed circuit boards. The MOVs are referenced to ground.
The MOVs should not be disconnected.