Delta Electronics VFD S 115V Series User Manual page 137

Chapter 6 Fault Code Information|VFD-S Series
Fault
Fault Descriptions
Name
Overheating
Heat sink temperature too high
Low voltage
The AC motor drive detects
that the DC bus voltage has
fallen below its minimum
value.
Overload
The AC motor drive detects
excessive drive output current.
NOTE: The AC motor drive
can withstand up to 150% of
the rated current for a
maximum of 60 seconds.
Overload 1
Internal electronic overload trip
Overload 2
Motor overload.
GFF hardware error
CC (current clamp)
OC hardware error
Over-current during
acceleration
Over-current during
deceleration
6-2
Corrective Actions
1. Ensure that the ambient temperature falls within
the specified temperature range.
2. Make sure that the ventilation holes are not
obstructed.
3. Remove any foreign objects from the heatsinks
and check for possible dirty heat sink fins.
4. Check the fan and clean it.
5. Provide enough spacing for adequate
ventilation. (See chapter 2)
1. Check whether the input voltage falls within the
AC motor drive rated input voltage range.
2. Check for abnormal load in motor.
3. Check for correct wiring of input power to R-S-T
(for 3-phase models) without phase loss.
1. Check whether the motor is overloaded.
2. Reduce torque compensation setting in Pr.7-02
3. Use the next higher power AC motor drive
model.
1. Check for possible motor overload.
2. Check electronic thermal overload setting.
3. Use a higher power motor.
4. Reduce the current level so that the drive
output current does not exceed the value set
by the Motor Rated Current Pr.7-00.
1. Reduce the motor load.
2. Adjust the over-torque detection setting to an
appropriate setting (Pr.6-03 to Pr.6-05).
Return to the factory.
1. Short-circuit at motor output: Check for
possible poor insulation at the output lines.
2. Torque boost too high: Decrease the torque
compensation setting in Pr.7-02
3. Acceleration Time too short: Increase the
Acceleration Time.
4. AC motor drive output power is too small:
Replace the AC motor drive with the next
higher power model.
1. Short-circuit at motor output: Check for
possible poor insulation at the output line.
2. Deceleration Time too short: Increase the
Deceleration Time.
3. AC motor drive output power is too small:
Replace the AC motor drive with the next
higher power model.
Revision August 2008, SE09, SW V2.61