BIG ASS FANS 8’ - 24’ PowerfoilPlus Installation Manual page 76

8' - 24' POWERFOILPLUS™, POWERFOIL™, & WICKERBILL FANS
70
Type 2 Fault Descriptions and Corrective Measures
F003 - Power Loss
- DC Buss Voltage remained below 85% of nominal. This fault is similar to F004, indicating an undervoltage
and/or power interruption. As a type 2, this fault will not reset automatically. F003 is a strong indicator of a maintained undervoltage,
and/or phase loss. Verify acceptable Line-to-Line voltage on the AC Supply. Verify that the input fuses in the fan controller are good.
Refer to the following section(s):
Power Requirements (p. 28)
Additional Input Power Considerations (p. 58)
F013, F038, F039, F040, F041, F042, F043
Ground Fault - A current path to ground has been detected on one or more of the VFD's output terminals. Possible causes include a
legitimate short to ground in controller output/motor leads, short to ground internal of the motor, excessive ground leakage currents, and
insulation breakdown of an unacceptable cable type.
Electrical Checks:
Power down the system and wait for the drive's DC buss to discharge. Disconnect the output/motor leads from controller. Using a
megger set to the 1000V range, test resistance between T1, T2, T3 (all three tied together) and the controller's ground lug. Readings
at or below 1.48 million ohms will indicate that the motor or cabling may be suffering from insulation breakdown. Proceeding further
will require the motor to be disconnected from associated cabling, with the jumpers and/or wire nuts removed. At the motor, using the
1000V range, check resistance between motor phases, and from each
phase to ground. Readings at or below 1.48 million ohms will indicate that the motor may be suffering from insulation breakdown. The
motor should be replaced at this time. If the motor resistance is found to be OK, this test should be repeated for the associated motor
cabling.
Use of MC Cable and/or any other solid core wire will increase the chances of premature cable failure. Due to "skin effects," capacitive
cable charging currents will typically be 50-75% higher than with other acceptable cable types. The VFD may perceive a ground fault
due to excessive current circulating through the VFD's output filter section.
A foreign signal presence on the output/motor leads can also give a false indication of a ground fault condition. If the motor is OK, and
the cable has tested OK and is of an acceptable type, contact your Big Ass Fans representative to replace the VFD; the power section
is defective.
Refer to the following sections(s):
Power Wiring Guidelines (p. 31)
Conduit and Piping Guidelines (p. 32)
General Grounding Requirements (p. 35)
Wiring the Motor (pp. 50-51)
Additional Input Power Considerations (p. 58)
F033 - Auto Restart Tries
The drive has unsuccessfully attempted to reset a fault and resume running three times (programmed value is 3). This fault will be
registered if the drive has attempted to reset a Type 1 fault three times. Cycle the controller power to clear this fault. If you experience
difficulty in retrieving active fault codes, contact your Big Ass Fans representative for assistance. The auto-restart feature may have to
be disabled to aid in troubleshooting.
F064 - Drive Overload
Drive rating of 150% for 1 minute or 200% for 3 seconds has been exceeded. This fault indicates that the drive has attempted to deliver
150-200% of its rated electrical output. This fault will occasionally take precedence over F007. Solution includes the same course of
action as stated for F007.
F070 - Power Unit
Failure has been detected in the drive's power section. Verify compliance with installation recommendations. Cycle the controller power
to clear this fault.
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