Rockwell Automation 7763 Medium Voltage OneGear SMC Flex Motor Controller (10-15 kV) - Manual (Page 99)

Rockwell Automation Publication 7760-UM001D-EN-P - October 2014 99
Troubleshooting Chapter 8
PTC Power Pole 10 • Controller ventilation blocked
• Controller duty cycle exceeded
• Fan failure
• Ambient temperature limit exceeded
• Failed thermistor
• Failed control module
• Failed gate driver board
• Failed fiber optic cable
• Failed interface board • Check for proper ventilation
• Check application duty cycle
• Replace fan
• Wait for controller to cool or provide external cooling
• Check connection or replace thermistor
• Replace control module
• Test or replace gate driver board
• Test or replace cable
• Test or replace interface board or fiber optic board; check ribbon cables
Motor PTC 12 • Motor ventilation blocked
• Motor duty cycle exceeded
• PTC open • Check for proper ventilation
• Check application duty cycle
• Wait for motor to cool or provide external cooling
• Check resistance of PTC
Open Bypass 13, 14, 15 • Control voltage is low
• Inoperable bypass contactor or breaker • Check control voltage power supply
• Check control circuit operation
• Check control plug on contactor or breaker
• Check that Aux. 1 is set correctly (External bypass or up to speed as
required by the application. See Status Indication on page 38 .)
No load 16, 17, 18, 40 • Loss of load side power wiring
• Loss of feedback • Check all load side power connections and motor windings
• Check voltage sensing module
Line Unbalance 19 • Supply unbalance is greater than the
user-programmed value
• The delay time is too short for the
application
• Unbalanced feedback
• Check power system and correct if necessary
• Extend the delay time to match the application requirements
• Check voltage sensing module
Overvoltage 20 • Supply voltage is greater than user-
programmed value
• Check power system and correct if necessary
• Correct the user-programmed value
Undervoltage 21 • Supply voltage is less than user-
programmed value
• The delay time is too short for the
application
• Check power system and correct if necessary
• Correct the user-programmed value
• Extend the delay time to match the application requirements.
Overload 22 • Motor overloaded
• Overload parameters are not matched
to the motor
• Check motor overload condition
• Check programmed values for overload class and motor FLC
Underload 23 • Broken motor shaft
• Broken belts, toolbits, etc.
• Pump cavitation • Repair or replace motor
• Check machine
• Check pump system
Jam 24 • Motor current has exceeded the user
programmed jam level
• Correct source of jam
• Check programmed time value
Stall 25 • Motor has not reached full speed by the
end of the programmed ramp time
(plus Stall delay time)
• Correct source of stall
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)
(1)
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
HAL_ID 38 • Faulty interface • Check ribbon cable connections between interface board and control
module
• Replace interface board
Display Fault Code Possible Causes Possible Solutions