10-4 Troubleshooting
Table 10.B Motor Will Not Start — No Output Voltage to the Motor
Table 10.C Motor Rotates (but does not accelerate to full speed)
Table 10.D Motor Stops While Running
Display Possible Cause Possible Solutions
Fault displayed • See fault description • See Table 10.A
addressing fault
conditions
Display is blank • Control voltage is
absent
• Failed control module
• Check control wiring and
correct if necessary
• Replace control module
• Cycle control power
Stopped
0.0 Amps
• Pilot devices
• SMC Enable input is
open at terminal 13
• Input terminals are not
wired correctly
• Start-Stop control has
not been enabled for
the human interface
module
• Control voltage
• Failed control module
•Check wiring
•Check wiring
•Check wiring
• Follow the instructions on
page 8-4…8-5 to enable
control capability
• Check control voltage
• Replace control module
Starting • Two or three power
phases are missing
• Check power system
Display Possible Cause Possible Solutions
Fault displayed • See fault description • See Table 10.A
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 10.A
addressing fault
conditions
Display is blank • Control voltage is
absent
• Failed control module
• Check control wiring and
correct if necessary
• Replace control module
Stopped
0.0 Amps
• Pilot devices
• 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
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