Honeywell VFD CORE User Manual

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CHAPTER 14: FAULT CODES AND DESCRIPTIONS
Fault Name Fault Descriptions Corrective Actions
Over-current during
acceleration
(Output current exceeds
triple rated current during
acceleration.)
1. Short-circuit at motor output: Check for possible poor
insulation at the output.
2. Acceleration Time too short: Increase the Acceleration Time.
3. VFD output power is too small: Replace the VFD with the next
higher power model.
Over-current during
deceleration
(Output current exceeds
triple rated current during
deceleration.)
1. Short-circuit at motor output: Check for possible poor
insulation at the output.
2. Deceleration Time too short: Increase the Deceleration Time.
3. VFD output power is too small: Replace the VFD with the next
higher power model.
Over-current during steady
state operation
(Output current exceeds
triple rated current during
constant speed.)
1. Short-circuit at motor output: Check for possible poor
insulation at the output.
2. Sudden increase in motor loading: Check for possible motor
stall.
3. VFD output power is too small: Replace the VFD with the next
higher power model.
Hardware failure in current
detection
Return to the factory
Ground fault
When (one of) the output terminal(s) is grounded, short circuit
current is more than 50% of VFD rated current, the VFD power
module may be damaged.
NOTE: The short circuit protection is provided for VFD
protection, not for protecting the user.
1. Check the wiring connections between the VFD 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.
1
2
3
1
2
3
Display error signal
Abbreviated error code
Display error description
ocA
Oc at accel
Fault
ocd
Oc at decel
Fault
ocn
Oc at normal SPD
Fault
ocS
Oc at stop
Fault
GFF
Ground fault
Fault

Honeywell VFD CORE Specifications

General

Brand	Honeywell
Model	VFD CORE
Category	Thermostat
Language	English