Rockwell Automation 1333 Drive, 3/4-5HP, 230-575V Series D - Manual (Page 24)

Installation and Wiring
Chapter 4
4-7
Terminal Block Power Wiring
Important:
1. The 1333 does not provide input power short circuit fusing.
Specifications for the recommended fuse size and type to provide drive
input power protection against short circuits are provided on the
following pages. Branch circuit breakers or disconnect switches cannot
provide this level of protection for drive components.
2. Each Bulletin 1333 must have its own dedicated input and output power
leads. If multiconductor cable is used, separate 3-conductor input and
output cable for each drive must be used.
3. For multimotor operation, the combined total of motor full load current
must not exceed the rated output current of the drive.
4. Verify that the motor windings are properly connected to receive the full
drive output voltage rating.
!
ATTENTION:
1. Any disconnecting means wired to drive output terminals
U /
T1,
V /
T2
and W /
T3
must be capable of stopping the drive if
opened during drive operation. If opened during drive operation,
the drive will continue to produce output voltage into an open
motor circuit causing a potential shock hazard.
2. The start/stop control circuitry in the 1333 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 is required to remove AC line
power to the drive. When AC input power is removed, there will
be a loss of inherent regenerative braking effect and the motor
will coast to a stop. An auxiliary braking method may be
required.
The 1333 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 must not be used. After a
hard wired stop has been initiated, allow at least five minutes
before reapplying input power to the drive. The allowable
number of hard wired start/stops are 1 cycle within a 5 minute
period. Wait 5 minutes before attempting the next hard wired
stop cycle to allow the drive precharge resistors to cool.
Refer to codes and standards applicable to your particular system
for specific requirements and additional information.