Rockwell Automation 1336T FORCE Series B - Manual (Page 30)

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Chapter 2
Installation/Wiring
2–10
Input Devices Starting and Stopping the Motor
ATTENTION: The drive start/stop 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 is required to remove
AC line power to the drive. When AC power is removed, there
will be a loss of inherent regenerative braking effect & the motor
will coast to a stop. An auxiliary braking method may be
required.
Repeated Application/Removal of Input Power
ATTENTION: The drive is intended to be controlled by control
input signals that will start and stop the motor. A device that
routinely disconnects then reapplies line power to the drive for
the purpose of starting and stopping the motor is not recom-
mended. If this type of circuit is used, a maximum of 3 stop/start
cycles in any 5 minute period (with a minimum 1 minute rest
between each cycle) is required. These 5 minute periods must be
separated by 10 minute rest cycles to allow the drive precharge
resistors to cool. Refer to codes and standards applicable to your
particular system for specific requirements and additional
information.
Bypass Contactors
ATTENTION: An incorrectly applied or installed system can
result in component damage or reduction in product life. The
most common causes are:
•
Wiring AC line to drive output or control terminals.
•
Improper bypass or output circuits not approved by Allen–
Bradley.
•
Output circuits which do not connect directly to the motor.
•
Incorrect or inadequate AC supply.
•
Excessive ambient temperature.
Contact Allen–Bradley for assistance with application or wiring.