Rockwell Automation 1560E SMC Flex Smart Motor Controller - Manual (Page 119)

Chapter
9
Troubleshooting
General Notes and Warnings For safety of maintenance personnel as well as others who might be exposed
to electrical hazards associated with maintenance activities, follow the
local safety related work practices (for example, the NFPA 70E, Part II in
the United States). Maintenance personnel must be trained in the safety
practices, procedures and requirements that pertain to their respective job
assignments.
Hazardous voltage is present in the motor circuit even
when the SMC-Flex controller is off. To avoid shock
hazard, disconnect main power before working on the
controller, motor, or control devices such as Start-Stop
push buttons. Procedures that require parts of the
equipment to be energized during troubleshooting,
testing, etc., must be performed by properly qualified
personnel, using appropriate local safety work practices
and precautionary measures.
Disconnect the controller from the motor before
measuring insulation resistance (IR) of the motor
windings. Voltages used for insulation resistance testing
can cause SCR failure. Do not make any measurements
on the controller with an IR tester (megger).
Note: The time it takes for the motor to come up to speed may be more or
less than the time programmed, depending on the frictional load
and inertial characteristics of the connected load.
Note: Depending on the application, the Braking options (SMB™ Motor
Braking, Accu-Stop and Slow Speed) may cause some vibration or
noise during the stopping cycle. This may be minimized by
lowering the braking current adjustment. If this is a concern in
your application, please consult the factory before implementing
these options.
For MV SMC-Flex technical support on start-up or existing installations, contact your
Rockwell Automation representative. You can also call 1-519-740-4790 for assistance
Monday through Friday from 9:00 a.m. to 5:00 p.m. (Eastern time zone).
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