TROUBLESHOOTING GUIDE TO ERROR MESSAGES
1
11
INDICATION
POSSIBLE CAUSE
CORRECTIVE ACTION
Command Select
Incorrect operating mode
programmed.
Change Operating Mode in the Level 1 Input block to one that does not
require the expansion board.
Need expansion board.
Install the correct expansion board for selected operating mode.
Bus Overvoltage
Trip or
HW Overvoltage
DECEL Rate set too low a value
Lengthen DECEL time.
Add external dynamic braking resistors or module.
Input voltage too high.
Verify proper AC line voltage.
Use step down transformer if needed.
Use line reactor to minimize spikes.
Bus Undervoltage
Input voltage too low.
Verify proper AC line voltage.
Use step up transformer if needed.
Check power line disturbances (sags caused by start up of
other equipment).
Monitor power line fluctuations with date and time imprint
to isolate power problem.
External Trip
Motor draws excessive current.
Check motor for overloading.
Verify proper sizing of control and motor.
External trip parameter incorrect.
Verify connection of external trip circuit at J4-16.
Set external trip
parameter to “OFF” if no connection made
at J4-16.
Hardware Protect
Fault duration too short to be
identified.
Reset control.
Check for proper grounding of power wiring and shielding of signal wiring.
Replace control board.
Heatsink Temp
Motor Overloaded.
Correct motor loading.
Verify proper sizing of control and motor.
Ambient temperature too high.
Relocate control to cooler operating area.
Add cooling fans or air conditioner to control cabinet.
Built-in fans are ineffective or
inoperative.
Verify fan operation.
Remove debris from fan and heatsink surfaces.
Replace fan or check fan wiring.
