Rockwell Automation 7763 Medium Voltage OneGear SMC Flex Motor Controller (10-15 kV) - Manual (Page 100)

100 Rockwell Automation Publication 7760-UM001D-EN-P - October 2014
Chapter 8 Troubleshooting
Table 36 - Motor Will Not Start – No Output Voltage to the Motor
Table 37 - Motor Rotates (but does not accelerate to full speed)
NVS Error 39 • Data entry error • Check user data and perform a User Store function
• Replace control module
Line Loss 41, 42, 43 • Line Distortion
• High impedance connection • Check supply voltage for capability to start/stop motor
• Check for loose connections on line side or motor side power wires
V24 Recovery 44 • Internal power supply problem • Cycle control power to reset the control module
• If Fault persists, replace control module
V24 Loss 45 • Internal power supply problem • Cycle control power to reset the control module
• If Fault persists, replace control module
V Control Loss 46 • Internal sense circuit problem • Cycle control power to reset the control module
• If Fault persists, replace control module
Option Input 1 48 • External Fault • Check programming of Parameter 132
• Check status of device connected to Input 1
Option Input 2 49 • External Fault • Check programming of Parameter 24
• Check status of device connected to Input 2
System Faults 128…209 • Control module internal fault • Cycle control power to reset the control module
• Review control module wiring. Ensure ground terminal is securely
reconnected to earth ground. Ensure RC snubber is connected to all
inductive loads in the control circuit that are connected to the control
module terminals.
• If fault persists, replace control module
(1) Prestart fault indication
Display Fault Code Possible Causes Possible Solutions
Display Possible Causes Possible Solutions
Fault displayed • See fault description • See Table 35 addressing fault conditions
Display is blank • Control voltage is absent
• Failed control module • Check control wiring and correct if necessary
• Cycle control power
• Replace control module
Stopped 0.0 A • 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 88 to page 90 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
Display Possible Causes Possible Solutions
Fault displayed • See fault description • See Table 35 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