Rockwell Automation MV SMC Flex OEM Components - Manual (Page 28)

4-12 Power Stack Installation
1503E-IN001E-EN-P – June 2013
A T T E N T I O N A T T E N T I O N It is the responsibility of the OEM to ensure that
the final enclosure is suitably bonded to ground,
and that provisions for grounding are made
according to local electrical codes and
standards.
The SCRs in the power stacks are not intended for continuous
operation. Observe the following operating restrictions for the SMC
when operating at 450% FLC and maximum ambient (40°C).
• Power stacks must be bypassed using a separate contactor when
motor is up to speed.
• Do not operate the power stacks for more than 60 seconds per hour.
• Do not exceed 30 seconds for any individual duty cycle of the power
stacks.
• Do not operate the power stacks for at least five minutes between a
start or a stop cycle.
Note: It may be possible to exceed some of the above restrictions if
all maximum ratings are not attained. For example, higher
ambient conditions can be supported when the % FLC and/or
start time are reduced. Please consult factory for details.
A T T E N T I O N A T T E N T I O N The operating restrictions for the SMC must be
adhered to. Failure to observe the recommended
precautions may result in injury to personnel or
damage to the equipment.
Power Stack Operating
Restrictions
Grounding