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134 Unidrive M100 User Guide
Issue Number: 1
The trips can be grouped into the following categories. It should be noted that a trip can only occur when the drive is not tripped or is already tripped
but with a trip with a lower priority number.
Table 12-3 Trip categories
12.5 Internal / Hardware trips
Trips {HF01} to {HF17} are internal faults that do not have trip numbers. If one of these trips occurs, the main drive processor has detected an
irrecoverable error. All drive functions are stopped and the trip message will be displayed on the drive keypad. If a non permanent trip occurs this may
be reset by power cycling the drive. On power up after it has been power cycled the drive will trip on St.HF. Enter 1299 in mm.000 to clear the Stored
HF trip.
tun.S Autotune test stopped before completion
18
The drive was prevented from completing an autotune test, because either the drive enable or the drive run were removed.
Recommended actions:
• Check the drive enable signal (Terminal 11) was active during the autotune
U.OI User OI ac
8 The U.OI trip is initiated if the output current of the drive exceeds the trip level set by User Over Current Trip Level (04.041).
U.S User Save error / not completed
36
The U.S trip indicates that an error has been detected in the user save parameters saved in non-volatile memory. For
example, following a user save command, If the power to the drive was removed when the user parameters were being
saved.
Recommended actions:
• Perform a user save in Pr mm.000 to ensure that the trip doesn’t occur the next time the drive is powered up.
• Ensure that the drive has enough time to complete the save before removing the power to the drive.
US.24 User 24 V supply is not present on the adaptor interface terminals (1,2)
91
A US.24 trip is initiated if the User Supply Select (06.072), is set to 1 and no user 24 V supply is present on the user 24 V
input on the AI-Backup adaptor.
Recommended actions:
• Ensure the user 24 V supply is present on the user terminals on the adaptor interface.
Trip Diagnosis
Priority Category Trips Comments
1 Internal faults
HF01, HF02, HF03, HF04,
HF05, HF06, HF07, HF08,
HF09, HF10, HF11, HF12,
HF13, HF14, HF15, HF16,
HF17
These indicate internal problems and cannot be reset. All drive features
are inactive after any of these trips occur.
1 Stored HF trip {St.HF}
This trip cannot be cleared unless 1299 is entered into Parameter
(mm.000) and a reset is initiated.
2 Non-resettable trips
Trip numbers 218 to 247,
{Sl.HF}
These trips cannot be reset.
3 Volatile memory failure {EEF}
This can only be reset if Parameter mm.000 is set to 1233 or 1244, or if
Load Defaults (11.043) is set to a non-zero value.
4 NV Media Card trips
Trip numbers 174, 175
and 177 to 188
These trips are priority 5 during power-up.
4 Internal 24V {PSU}
5
Trips with extended reset
times
{OI.AC}, {OI.br}, and
{OI.dc}
These trips cannot be reset until 10 s after the trip was initiated.
5
Phase loss and d.c.
jumper power circuit
protection
{PH.Lo} and
{Oh.dc}
The drive will attempt to stop the motor before tripping if a {PH.Lo}. 000
trip occurs unless this feature has been disabled (see Action On Trip
Detection (10.037). The drive will always attempt to stop the motor before
tripping if an {Oh.dc} occurs.
5 Standard trips All other trips