Honeywell VFD CORE

CHAPTER 14: FAULT CODES AND DESCRIPTIONS
63-4528—04 250
Short-circuit is detected
between upper bridge and
lower bridge of the IGBT
module
Return to the factory
DC BUS over-voltage during
acceleration (230V: DC
450V; 460V: DC 900V)
1. Check if the input voltage falls within the rated VFD input
voltage range.
2. Check for possible voltage transients.
3. If DC BUS over-voltage due to regenerative voltage, please
increase the Deceleration Time or add an optional brake
resistor.
DC BUS over-voltage during
deceleration (230V: DC
450V; 460V: DC 900V)
1. Check if the input voltage falls within the rated VFD input
voltage range.
2. Check for possible voltage transients.
3. If DC BUS over-voltage due to regenerative voltage, please
increase the Deceleration Time or add an optional brake
resistor.
DC BUS over-voltage at
constant speed (230V: DC
450V; 460V: DC 900V)
1. Check if the input voltage falls within the rated VFD input
voltage range.
2. Check for possible voltage transients.
3. If DC BUS over-voltage due to regenerative voltage, please
increase the Deceleration Time or add an optional brake
resistor.
Hardware failure in voltage
detection
1. Check if the input voltage falls within the rated VFD input
voltage range.
2. Check for possible voltage transients.
DC BUS voltage is less than
Pr.06-00 during acceleration
1. Check if the input voltage is normal
2. Check for possible sudden load
DC BUS voltage is less than
Pr.06-00 during deceleration
1. Check if the input voltage is normal
2. Check for possible sudden load
DC BUS voltage is less than
Pr.06-00 in constant speed
1. Check if the input voltage is normal
2. Check for possible sudden load
occ
Short Circuit
Fault
ovA
Ov at accel
Fault
ovd
Ov at decel
Fault
ovn
Ov at normal SPD
Fault
ovS
Ov at stop
Fault
LvA
Lv at accel
Fault
Lvd
Lv at decel
Fault
Lvn
Lv at normal SPD
Fault