Rockwell Automation 1560E SMC Flex Smart Motor Controller - Manual (Page 122)

9-4 Troubleshooting
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Table 9.A – Fault Display Explanation (cont.)
Display Fault Code Possible Causes Possible Solutions
Phase Reversal 26 • Incoming supply voltage is not in
the expected ABC sequence
• Check power wiring
• Disable protection if not needed
Comm Loss 27, 28, 29 • Communication disconnection at
the serial port
• Check for a communication cable disconnection to the
SMC-Flex controller
Network 30, 31, 32 • DPI network loss • Reconnect for each DPI connected device
Ground Fault 33 • Ground fault current level has
exceeded programmed values
• Check power system and motor; correct if necessary
• Check programmed ground fault levels to match
application requirements
Excess Starts/Hr. 34 • Number of starts in a one-hour
period has exceeded the value
programmed
• Wait an appropriate amount of time to restart
• Consult factory if more than 2 starts per hour are
required
Power Loss :
(with phase indication)
35, 36, 37 • Missing supply phase (as indicated)
• Loss of feedback • Check for open line (i.e., blown line fuse)
• Check CT connections, replace Interface board
Hall ID 38 • Faulty interface • Check ribbon cable connections between interface
board and control module
• Replace interface board
NVS Error 39 • Data entry error • Check user data and perform a User Store function
• Replace control module
System Faults 128 to 209 • Control module internal fault • Cycle control power to reset the control module
• If fault persists, replace control module
: Prestart fault indication
Table 9.B – Motor Will Not Start – No Output Voltage to the Motor
Display Possible Causes Possible Solutions
Fault displayed • See fault description • See Table 9.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 16 is open
• 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 2-16 to 2-18
to enable control capability
• Check control voltage
• Replace control module
Starting • Two or three power phases are
missing
• Check power system
• Check voltage sensing module and connections
Table 9.C – Motor Rotates (but does not accelerate to full speed)
Display Possible Causes Possible Solutions
Fault displayed • See fault description • See Table 9.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