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150 Unidrive M200 / M201 Control User Guide
Issue Number: 2
Table 12-4 Trip categories
12.5 Internal / Hardware trips
Trips {HF01} to {HF23} are internal faults that do not have trip numbers except HF08, HF11, HF12 and HF18. 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 (the
sub-trip number indicates the HF fault code). Enter 1299 in Pr 00 to clear the Stored HF trip.
12.6 Alarm indications
In any mode, an alarm is an indication given on the display by alternating the alarm string with the drive status string display. If an action is not taken
to eliminate any alarm except "tuning”, “LS" or “24.LoSt” the drive may eventually trip. Alarms are not displayed when a parameter is being edited.
Table 12-5 Alarm indications
Priority Category Trips Comments
1 Internal faults HFxx
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 (00)
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 00 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} Rectifier 24 V
5
Trips with extended reset
times
{OI.AC}, {OI.br}, and
FAn.F
These trips cannot be reset until 10 s after the trip was initiated.
5
Phase loss and d.c. link
power circuit protection
{PH.Lo} and
{Oh.dc}
The drive will attempt to stop the motor before tripping if a {PH.Lo} 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
Alarm string Description
br.res
Brake resistor overload. Braking Resistor Thermal Accumulator (10.039) in the drive has reached 75.0 % of the value at which
the drive will trip.
OV.Ld
Motor Protection Accumulator (04.019) in the drive has reached 75.0 % of the value at which the drive will trip and the load on the
drive is >100 %.
d.OV.Ld Drive over temperature. Percentage Of Drive Thermal Trip Level (07.036) in the drive is greater than 90 %.
tuning The autotune procedure has been initialized and an autotune in progress.
LS Limit switch active. Indicates that a limit switch is active and that is causing the motor to be stopped.
Opt.AI Option slot alarm.
Lo.AC Low voltage mode. See Low AC Alarm (10.107).
I.AC.Lt Current limit active. See Current Limit Active (10.009).
24.LoSt 24V backup not present. See 24V Alarm Loss Enable (11.098)
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