Rockwell Automation 20D PowerFlex 700S with Phase I Control Reference Manual - Manual (Page 75)

Rockwell Automation Publication PFLEX-RM002D-EN-E - August 2013 75
Detail Drive Configuration and Operation Chapter 1
Motor Start/Stop Precautions Input Contactor
Output Contactor
Mounting As a general rule, drives should be mounted on a metallic flat surface in the
vertical orientation. If considering other orientation, contact the Factory for
additional data. Refer to the Chapter 1 - Installation/Wiring in the PowerFlex
700S Drive User Manual, publication
20D-UM001 for mounting instructions
and limitations.
ATTENTION: A contactor or other device that routinely disconnects and
reapplies the AC line to the drive to start and stop the motor can cause drive
hardware damage. The drive is designed to use control input signals that will
start and stop the motor. If an input device is used, operation must not exceed
one cycle per minute or drive damage will occur.
ATTENTION: The drive start/stop/enable control circuitry includes solid state
components. If hazards due to accidental contact with moving machinery or
unintentional flow of liquid, gas or solids exist, an additional hardwired stop
circuit may be required to remove the AC line to the drive. An auxiliary braking
method may be required.
ATTENTION: To guard against drive damage when using output contactors, the
following information must be read and understood. One or more output
contactors may be installed between the drive and motor(s) for the purpose of
disconnecting or isolating certain motors/loads. If a contactor is opened while
the drive is operating, power will be removed from the respective motor, but
the drive will continue to produce voltage at the output terminals. In addition,
reconnecting a motor to an active drive (by closing the contactor) could produce
excessive current that may cause the drive to fault. If any of these conditions are
determined to be undesirable or unsafe, an auxiliary contact on the output
contactor should be wired to a drive digital input that is programmed as
ìEnable.î This will cause the drive to execute a coast-to-stop (cease output)
whenever an output contactor is opened.