51
12
Resettable
Fault
12065 Main Blower Flt
Main Blower Fault. The Mn heatsink fan is
running below the fault threshold speed.
For Frame 5 drives:
• The threshold is 6460 RPM while the
drive is modulating, and 1593 RPM
while the drive is not modulating.
For Frame 6 products (drives and bus
supplies):
• The threshold is 6375 RPM while the
product is modulating, and 1593 RPM
while the product is not modulating.
For Frame 7 products:
• The threshold is 6375 RPM while the
product is modulating, and 4675 RPM
while the product is not modulating.
For Frame 8…15 products:
• The threshold is 1800 RPM while the
product is modulating, and 60 RPM
while the product is not modulating.
Power down. Replace the Mn heatsink
fan. See the hardware service manual,
publication 750-TG100 for PowerFlex
755T or publication 750-TG101 for
PowerFlex 755TS products, for the
replacement procedure. Reset the
Predictive Maintenance object for
heatsink fan elapsed life.
Coast (Motor Side Inverter).
Additional Fault Action. Fault opens
main circuit breaker: Yes. Fault can
automatically reset: No. Emergency
override response: 0:455 [Emerg Prot
OVRD] bit 3 ‘MS Pwr Flts’.
12
Resettable
Fault
12071 Board OT Fault
Board OT Fault. The temperature of one
of the power peripherals (power layer
interface board, torque accuracy module,
or DC precharge board) has exceeded
the fault temperature (80°C). The fault
temperature for a PowerFlex 755TS
torque accuracy module is 99°C. Possible
causes include high ambient temperature
and obstructed airflow. See the
corresponding parameter in Port 12 [Mn
PLI BoardTemp] and/or [DCPn Board
Temp].
Check the ambient temperature. Check
the condition of cabinet air filters.
Check the condition of cabinet air
filters. Verify adequate airflow and the
ambient temperature is within
specification. See the technical data,
publication 750-TD100 for PowerFlex
755T or publication 750-TD104 for
PowerFlex 755TS products.
Coast (Motor Side Inverter).
Additional Fault Action. Fault opens
main circuit breaker: Yes. Fault can
automatically reset: No. Emergency
override response: 0:455 [Emerg Prot
OVRD] bit 7 ‘Board Faults’.
12
Resettable
Fault
12073 Board UT Fault
Board UT Fault. The temperature of one
of the power peripherals (power layer
interface board, torque accuracy module,
or DC precharge board) has fallen below
the fault temperature (–30°C). The most
likely cause is low ambient temperature.
See the corresponding parameter in Port
12 [Mn PLI BoardTemp] and/or [DCPn
Board Temp].
Verify that the ambient temperature is
within specification. See the technical
data, publication 750-TD100 for
PowerFlex 755T or publication 750-
TD104 for PowerFlex 755TS products.
Coast (Motor Side Inverter).
Additional Fault Action. Fault opens
main circuit breaker: No. Fault can
automatically reset: No. Emergency
override response: 0:455 [Emerg Prot
OVRD] bit 7 ‘Board Faults’.
12
Resettable
Fault
12075 IntakeAir OT Flt
Intake Air OT Fault. Power module intake
air has exceeded the fault temperature
(70°C). See the corresponding parameter
in Port 12 [Mn Meas Amb Tmp].
Check the ambient temperature. Check
the condition of cabinet air filters. Verify
adequate airflow and the ambient
temperature is within specification. See
the technical data, publication 750-
TD100 for PowerFlex 755T or
publication 750-TD104 for PowerFlex
755TS products.
Coast (Motor Side Inverter).
Additional Fault Action. Fault opens
main circuit breaker: Yes. Fault can
automatically reset: No. Emergency
override response: 0:455 [Emerg Prot
OVRD] bit 3 ‘MS Pwr Flts’.
12
Resettable
Fault
12077 IntakeAir UT Flt
Intake Air UT Fault. Power module intake
air has fallen below the fault temperature
(–25°C). See the corresponding
parameter in Port 12 [Mn Meas Amb
Tmp].
Verify that the ambient temperature is
within specification. See the technical
data, publication 750-TD100 for
PowerFlex 755T or publication 750-
TD104 for PowerFlex 755TS products.
Coast (Motor Side Inverter).
Additional Fault Action. Fault opens
main circuit breaker: No. Fault can
automatically reset: No. Emergency
override response: 0:455 [Emerg Prot
OVRD] bit 3 ‘MS Pwr Flts’.
12
Resettable
Fault
12079 PIB OT Fault
PIB OT Fault. The power interface board
(PIB) has exceeded the fault temperature
(80°C). Possible causes include high
ambient temperature and obstructed
airflow. See the corresponding parameter
in Port 12 [Mn PIB BoardTemp].
Check the ambient temperature. Check
the condition of cabinet air filters. Verify
adequate airflow and the ambient
temperature is within specification. See
the technical data, publication 750-
TD100 for PowerFlex 755T or
publication 750-TD104 for PowerFlex
755TS products.
Coast (Motor Side Inverter).
Additional Fault Action. Fault opens
main circuit breaker: No. Fault can
automatically reset: No. Emergency
override response: 0:455 [Emerg Prot
OVRD] bit 7 ‘Board Faults’.
12
Resettable
Fault
12081 PIB UT Fault
PIB UT Fault. The power interface board
(PIB) has fallen below the fault
temperature (–30°C). Possible causes
include low ambient temperature and
obstructed airflow. See the corresponding
parameter in Port 12 [Mn PIB
BoardTemp].
Verify that the ambient temperature is
within specification. See the technical
data, publication 750-TD100 for
PowerFlex 755T or publication 750-
TD104 for PowerFlex 755TS products.
Coast (Motor Side Inverter).
Additional Fault Action. Fault opens
main circuit breaker: No. Fault can
automatically reset: No. Emergency
override response: 0:455 [Emerg Prot
OVRD] bit 7 ‘Board Faults’.
12
Resettable
Fault
12084 Bus Imbalanc Flt
Bus Imbalance Fault. The DC bus voltage
imbalance between Mn Power modules
has exceeded the fault threshold. See the
corresponding parameter in Port 12 [Mn
DC BusVoltage].
If fault persists, replace the balance
resistors, the DC bus capacitor
assembly, or Mn power module. See
the hardware service manual,
publication 750-TG100 for PowerFlex
755T or publication 750-TG101 for
PowerFlex 755TS products, for the
replacement procedure.
Coast (Motor Side Inverter).
Additional Fault Action. Fault opens
main circuit breaker: Yes. Fault can
automatically reset: No. Emergency
override response: 0:455 [Emerg Prot
OVRD] bit 3 ‘MS Pwr Flts’.
12
Resettable
Fault
12085 PWM Enable Flt
PWM Enable w/o DTM Active Fault.
Control attempted to modulate before the
thermal manager was running.
Cycle power.
Coast (Motor Side Inverter).
Additional Fault Action. Fault opens
main circuit breaker: No. Fault can
automatically reset: Yes. Emergency
override response: 0:455 [Emerg Prot
OVRD] bit 3 ‘MS Pwr Flts’.
Table 7 — Fault Codes by Port (cont)
PORT
CONDITION
DISPLAY
TEXT
FAULT ACTION FAULT ACTION
TYPE CODE
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