
MAINTENANCE
Troubleshooting
158
ovn
(9)
ov at normal SPD
DC bus over-voltage at constant speed. When ovn occurs, the drive closes the gate of the output immediately, the
motor runs freely, and the display shows an ovn error.
Action and Reset
Action level
230V models: 410 VDC
460V models: 820 VDC
575V models: 1116 VDC
690V models: 1318 VDC
Action time
Immediately act when DC bus voltage is higher than the level
Related parameters
[VFD-37]
and
[PROT-04]
Reset method
Manually
Reset condition
Reset only when DC bus voltage is lower than 90% of over-voltage level
Recorded
Yes
Possible Causes
Corrective Action
• Impulsive change of the load
• The setting for stall prevention level is
smaller than no-load current
• Regenerative voltage of motor inertia
• Power voltage is too high
• ON/OFF switch action of phase-in
capacitor in the same power system
• Motor ground fault
• Incorrect wiring of brake resistor or
brake unit
• Malfunction caused by interference
• Connect brake resistor, brake unit or DC bus to the drive.
• Reduce the load.
• Replace to drive with a larger capacity model.
• Adjust braking level
[VFD-37]
or bolt position of the brake unit.
•
The setting of stall prevention level should be larger than no-load current
• Use over-voltage stall prevention function
[PROT-04]
. Use a brake unit or DC bus
• Check if the input voltage is within the rated AC motor drive input voltage range, and check for
possible voltage spikes.
• If the phase-in capacitor or active power supply unit acts in the same power system, the input
voltage may surge abnormally in a short time. In this case, install an AC reactor.
• The ground short-circuit current charges the capacitor in the main circuit through the power.
Check if there is ground fault on the motor cable, wiring box and its internal terminals. Trouble
-
shoot the ground fault.
• Check the wiring of brake resistor or brake unit.
• Verify the wiring of the control circuit and wiring/grounding of the main circuit to prevent inter
-
ference.
Fault Display
Description
Содержание CERUS X-DRIVE CXD-003A-4V
Страница 1: ...franklin electric com ENGLISH EN CERUSX DRIVE Installation and Operation Manual Firmware Version 1 2 ...
Страница 2: ......
Страница 3: ...CERUS X DRIVE INSTALLATION AND OPERATION MANUAL Firmware Version 1 2 Franklin Electric Co Inc ...
Страница 96: ...OPERATION Protection Features 96 ...
Страница 112: ...ADVANCED APPLICATION OPTIONS Multi Drive Configurations 112 ...
Страница 124: ...COMMUNICATIONS BACnet Communication 124 ...
Страница 128: ...ACCESSORIES Optional Extension Cards 128 Frame D Frame E Frame F ...
Страница 129: ...ACCESSORIES Optional Extension Cards 129 Frame G Frame H ...
Страница 132: ...ACCESSORIES Optional Extension Cards 132 ...
Страница 234: ...PARAMETER REFERENCE TABLES Parameter Descriptions Motor Menu 234 ...
Страница 250: ...GLOSSARY 250 ...
Страница 252: ...For technical assistance parts or repair please contact 800 348 2420 franklin electric com 10000005064 Rev 004 09 22 ...