Rockwell Automation 284 ArmorStart User Manual - Manual (Page 300)

14-6 Troubleshooting
Table 14.4 Motor Will Not Start – No Output Voltage to the Motor
Table 14.5 Motor Rotates (but does not accelerate to full speed)
Table 14.6 Motor Stops While Running
Table 14.7 Miscellaneous Situations
Display Possible Cause Possible Solutions
Fault displayed See fault description See Table 14.3 addressing fault conditions
Display is blank Control voltage is absent Check control wiring and proper polarity. Correct if
necessary
Starting Two or three power phases are missing Check power system
Display Possible Cause Possible Solutions
Fault displayed See fault description See Table 14.3 addressing fault conditions
Starting Mechanical problems
Inadequate Current Limit setting
Failed control module Check for binding or external loading and correct
Check motor
Adjust the Current Limit level to a higher setting
Replace control module
Display Possible Cause Possible Solutions
Fault displayed See fault description See Table 14.3 addressing fault conditions
RUN LED is blank Control voltage is absent
Failed control module Check control wiring and correct if necessary
Replace control module
Starting Two or three power phases are missing
Failed control module Check power system
Replace control module
Display Possible Cause Possible Solutions
Motor current and voltage fluctuates with
steady load Motor
Erratic load Verify type of motor as a standard squirrel cage
induction motor
Check load conditions
Erratic operation Loose connections Shut off all power to controller and check for loose
connections
Accelerates too fast Starting time
Initial torque
Current limit setting
Kickstart Increase starting time
Lower initial torque setting
Decrease current limit setting
Lower kickstart time or turn off
Accelerates too slow Starting time
Initial torque
Current limit setting
Kickstart Decrease starting time
Increase initial torque setting
Increase current limit setting
Increase kickstart time or turn off
Motor stops too quickly with Soft Stop Time setting Verify the programmed stopping time and correct it
or increase
Motor stops too slowly with Soft Stop Stopping time setting
Misapplication Verify the programmed stopping time and correct if
necessary
The Soft Stop is intended to extend the stopping
time for loads that stop suddenly when power is
removed from the motor