HONEYWELL CORE DRIVE
62-0410—04
20
FAULT CODES AND DESCRIPTIONS
1
2
3
1
2
3
Display error signal
Abbreviated error code
Display error description
Table 14. Fault Codes and Descriptions
NOTE: Additional details and screen shots of the error messages can be found in the full manual.
Fault
Code
Keypad
Fault Desc
Fault Descriptions
Corrective Actions
ocA
oc at accel
Over-current during acceleration
1. Short-circuit at motor output: Check for possible poor
insulation at the output.
(Output current exceeds triple rated current
during acceleration)
2. Acceleration Time too short: Increase the Acceleration Time.
3. AC motor drive output power is too small: Replace the AC
motor drive with the next higher power model.
ocd
oc at decel
Over-current during decceleration
1. Short-circuit at motor output: Check for possible poor
insulation at the output.
(Output current exceeds triple rated current
during decceleration.)
2. Decceleration Time too short: Increase the Decceleration
Time.
3. AC motor drive output power is too small: Replace the AC
motor drive with the next higher power model.
ocn
oc at normal
SPD
Over-current during steady state operation
1. Short-circuit at motor output: Check for possible poor
insulation at the output.
(Output current exceeds triple rated current
during constant speed.)
2. Sudden increase in motor loading: Check for possible motor
stall.
3. AC motor drive output power is too small: Replace the AC
motor drive with the next higher power model.
ocS
oc at stop
Hardware failure in current detection
Return to the factory
GFF
Ground fault Ground fault
When (one of) the output terminal(s) is grounded, short circuit
current is more than 50% of AC motor drive rated current, the
AC motor drive power module may be damaged.
NOTE: The short circuit protection is provided for AC motor
drive protection, not for protecting the user.
1. Check the wiring connections between the AC motor drive
and motor for possible short circuits, also to ground.
2. Check whether the IGBT power module is damaged.
3. Check for possible poor insulation at the output.
occ
Short Circuit Short-circuit is detected between upper
bridge and lower bridge of the IGBT module
Return to the factory
ovA
ov at accel
DC BUS over-voltage during acceleration
(230V: DC 450V; 460V: DC 900V)
1. Check if the input voltage falls within the rated AC motor
drive input voltage range.
2. Check for possible voltage transients.
3. If DC BUS over-voltage due to regenerative voltage, please
increase the Decceleration Time or add an optional brake
resistor.
ovd
ov at decel
DC BUS over-voltage during decceleration
(230V: DC 450V; 460V: DC 900V)
1. Check if the input voltage falls within the rated AC motor
drive input voltage range.
2. Check for possible voltage transients.
3. If DC BUS over-voltage due to regenerative voltage, please
increase the Decceleration Time or add an optional brake
resistor.
