C-tick conformity, Using input/output contactors, Input contactor precautions – Rockwell Automation 20L PowerFlex 700L Liquid-Cooled Adjustable Frequency AC Drive User Manual

Page 25: Output contactor precaution

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General Installation Information

1-9

PowerFlex 700L Frames 2, 3A, and 3B Liquid-Cooled AC Drives User Manual

Publication 20L-UM001E-EN-P

C-Tick Conformity

Compliance of PowerFlex 700L Liquid-Cooled AC drives with the
Australian Radiocommunications Act of 1992 has been demonstrated
through compliance with EN61800-3. Both the General Notes and the
Essential Requirements for CE Compliance provided above apply to C-Tick
compliance for PowerFlex 700L Liquid-Cooled AC drives.

C-Tick Declarations of Compliance are available online at

www.ab.com/

certification/c-tick/index.html

.

Using Input/Output
Contactors

Input Contactor Precautions

Output Contactor Precaution

!

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 hard-wired 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 “Enable.” This will cause the drive to execute a
coast-to-stop (cease output) whenever an output contactor is
opened.

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