52 Unidrive M300/HS30 Quick Start Guide
Issue Number: 6
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
Sto No Safe Torque Off board installed Safe Torque Off board not installed.
th Motor thermistor over-temperature
The motor thermistor connected to terminal 14 (digital input 5)
on the control connections has indicated a motor over
temperature.
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.
thS Motor thermistor short circuit
The motor thermistor connected to terminal 14 (digital input 5)
on the control connections, is short circuit or low impedance
(<50 Ω).
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.
tunE.1 Autotune 1
The drive has tripped during a rotating autotune. The cause of
the trip can be identified from the sub-trip number.
Refer to the Drive User Guide.
tunE.3 Autotune 3
RFC-A mode only.
The drive has tripped during a rotating auto-tune or mechanical
load measurement. The cause of the trip can be identified from
the associated sub-trip number.
Refer to the Drive User Guide.
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
Sub-trip Reason
1 Reserved
2
The motor did not reach the required
speed during rotating auto-tune or
mechanical load measurement.
Sub-trip Reason
1
Measured inertia has exceeded the
parameter range during a mechanical
load measurement.
2 Reserved
3
The commutation signals changed in
the wrong direction during a rotating
autotune.
Unidrive M300 Quick Start Guide English Iss6.book Page 52 Tuesday, September 22, 2015 3:21 PM
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