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
Stopped
0.0 Amps
•
Pilot devices
•
SMC Enable input is
open at terminal 13
•
Terminal 15 is open on
Soft Stop, Pump
Control, and SMB
•
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
pages 2-13 and 2-14 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
Summary of Contents for SMC Dialog Plus
Page 46: ...2 20 Installation ...
Page 78: ...4 14 Programming ...
Page 149: ...9 6 Diagnostics ...
Page 157: ...10 8 Troubleshooting Figure 10 3 Removal of Control Module 180 360A 1 3 2 4 ...
Page 169: ...A 6 Specifications ...
Page 179: ...C 4 Renewal Parts ...