10-4 MD60 AC Drive User Manual
F8 Heatsink
OverTemp
Y Heatsink temperature
exceeds a predefined
value.
• Check for blocked or
dirty heat sink fins.
Verify that ambient
temperature has not
exceeded 40°C (104°F)
for IP 30/NEMA 1/UL
Type 1 installations or 50°C
(122°F) for Open type
installations.
• Check fan.
F12 HW
OverCurrent
N The drive output
current has exceeded
the hardware current
limit.
Check programming.
Check for excess load,
improper Start Boost
(A084) setting, DC brake
volts set too high, or other
causes of excess current.
F13 Ground Fault N A current path to earth
ground has been
detected at one or
more of the drive
output terminals.
Check the motor and
external wiring to the drive
output terminals for a
grounded condition.
F33 Auto Restart
Tries
N Drive unsuccessfully
attempted to reset a
fault and resume
running for the
programmed number
of Auto Restart Tries in
A092.
Correct the cause of the
fault and manually clear.
F38 Phase U to
Gnd
N A phase to ground fault
has been detected
between the drive and
motor in this phase.
• Check the wiring
between the drive and
motor.
• Check motor for
grounded phase.
• Replace drive if fault
cannot be cleared.
F39 Phase V to
Gnd
F40 Phase W to
Gnd
F41 Phase UV
Short
N Excessive current has
been detected
between these two
output terminals.
• Check the motor and
drive output terminal
wiring for a shorted
condition.
• Replace drive if fault
cannot be cleared.
F42 Phase UW
Short
F43 Phase VW
Short
Table 10.1 – Fault Descriptions and Corrective Actions (Continued)
No. Fault
Auto-Reset
1
?
Description Action
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