10 Error Messages
10.3 Error list
DC1 variable frequency drive 12/13 MN04020003Z-EN www.eaton.com 165
10.3 Error list
The following table shows the failure codes, the possible causes and
indicates corrective measures.
Table 21: Error messages list
Failure
code [hex]
View Designation Possible cause Notes
01
OI-b
Braking chopper over-
current
Overcurrent braking resistance • Overcurrent in braking resistor circuit.
• Check the wiring to the braking resistance.
• Check the brake resistor value. Make sure that
the minimum resistance values are being
adhered to.
02
OL-br
Thermal overload
braking resistance
Braking resistance overload • Increase the deceleration time, reduce the
load's moment of inertia, or connect additional
braking resistors in parallel.
• Make sure that the minimum resistance values
are being adhered to.
03
O-I
Overcurrent motor • Overcurrent at output
• Motor overload
• Overtemperature at heat sink
• Short circuit / ground fault
• Motor with constant speed: Determine the over-
load or fault.
• Motor starts: The load stalled or has seized.
Check whether there is a star/delta motor
wiring error.
• Motor accelerates/decelerates: The excessively
short acceleration/deceleration time is
requiring too much power. If P-03 or P-04 cannot
be increased, a more powerful variable
frequency drive is required.
• Cable fault between variable frequency drive
and motor.
04
I.t-trF
Thermal motor over-
load
The DC1 variable frequency drive was
switched off after more than 100 % of
the value set in P-08 was delivered for
a period of time.
• Check whether the decimal places are flashing
(variable frequency drive overloaded) and either
raise the acceleration ramp (P-03) or reduce the
motor load.
• Make sure that the cable length matches the
variable frequency drive specifications.
• Check the load mechanically in order to make
sure that it is free, that nothing is getting
jammed or locked, and there are no other
mechanical faults.
05
PS-trF
Fault in power section Fault in power section • Check the wiring to the motor.
• Check whether there is a short-circuit between
the phases or an earth fault in a phase.
• Check the variable frequency drive's ambient air
temperature. Check whether additional clear-
ance or cooling is required. Make sure that the
variable frequency drive is not being over-
loaded.
06
O.VoIt
Overvoltage • Overvoltage at DC link
• Mains overvoltage
• Power supply problem
Increase deceleration ramp time P-04.
07
V.VoIt
Undervoltage • DC link undervoltage
• Mains undervoltage
• Usually occurs if the power is switched off. If it
occurs during operation, check the power supply
voltage.
08
O-t
Overtemperature Heat sink overtemperature • Check the variable frequency drive's ambient air
temperature. Check whether additional clear-
ance or cooling is required.
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