40 Unidrive M100-101 Quick Start Guide
Issue Number: 6
OI.SC Output phase short-circuit Over-current detected on drive output when enabled.
Out.P Output phase loss detected Phase loss has been detected at the drive output.
OV
DC bus voltage has exceeded the
peak level or maximum
continuous level for 15 seconds
The OV trip indicates that the DC bus voltage has exceeded the
maximum limit.
Possible solutions:
• Increase Deceleration Rate 1 (Pr 00.004)
• Decrease the braking resistor value (staying above the
minimum value)
• Check nominal AC supply level
• Check for supply disturbances which could cause the DC bus
to rise
• Check motor insulation using a insulation tester
P. d A t
Power system configuration data
error
Contact the supplier of the drive.
Pb.Er
Communication has been lost /
errors detected between power
control
Communications loss between power and control.
Pb.HF Power board HF Power processor hardware fault - contact the supplier of the drive
Pd.S Power down save error
Error has been detected in the power down save parameters
saved in non-volatile memory.
PH.Lo Supply phase loss
The drive has detected an input phase loss or large supply
imbalance.
PSU Internal power supply fault
One or more internal power supply rails are outside limits or
overloaded.
r.b.ht Hot rectifier/brake Over-temperature detected on input rectifier or braking IGBT.
rS
Measured resistance has
exceeded the parameter range
The measured stator resistance during an autotune test has
exceeded the maximum possible value of Stator Resistance.
Refer to the Drive User Guide.
So.St
Soft start relay failed to close, soft
start monitor failed
Soft start relay in the drive failed to close or the soft start
monitoring circuit has failed.
St.HF
Hardware trip has occurred
during last power down
Hardware trip (HF01 –HF19) has occurred and the drive has been
power cycled. Enter 1299 to xx.000 to clear trip
th.br Brake resistor over temperature
The th.br trip is initiated if the hardware based braking resistor
thermal monitoring is connected and the resistor overheats.
tH.Fb Internal thermistor has failed Internal thermistor has failed.
tun.S
Autotune test stopped before
completion
The drive was prevented from completing an autotune test,
because either the drive enable or the drive run signals were
removed.
U.OI User OI ac
The U.OI trip is initiated if the output current of the drive exceeds
the trip level set by User Over Current Trip Level. Refer to the
Drive User Guide.
U.S User Save error / not completed
The U.S trip indicates that an error has been detected in the user
save parameters saved in non-volatile memory.
US.24
User 24 V supply is not present
on the adaptor interface terminals
(1,2)
A US.24 trip is initiated if the User Supply Select is set to 1 and no
user 24 V supply is present on the user 24 V input on the AI-
Backup adaptor.Refer to the Drive User Guide
Trip
code
Condition Description
Unidrive M100 101 Quick Start Guide English Iss6.book Page 40 Wednesday, September 9, 2015 4:07 PM
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