60 Unidrive M300/HS30 Quick Start Guide
Issue Number: 7
8.1 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 8-2 Alarm indications
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.
UP.uS User Program trip
This trip can be initiated from within an onboard user program.
Refer to the Control User Guide.
UPrG User Program
An error has been detected in the onboard user program image.
Refer to the Control User Guide.
Alarm string Description
br.res
Brake resistor overload. Braking Resistor Thermal Accumulator in the drive has
reached 75.0 % of the value at which the drive will trip.Refer to the Power
Installation Guide
OV.Ld
Motor Protection Accumulator in the drive has reached 75.0 % of the value at
which the drive will trip and the load on the drive is >100 %, reduce motor current
(load). Refer to the Parameter Reference Guide
d.OV.Ld
Drive over temperature. Percentage Of Drive Thermal Trip Level in the drive is
greater than 90 %. Refer to the Parameter Reference Guide
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.
Lo.AC Low voltage mode. See Low AC Alarm in Control User Guide.
I.AC.Lt Current limit active. See Current Limit Active in Control User Guide.
24.LoSt 24V backup not present. See 24V Alarm Loss Enable in the Control User Guide.
Trip
code
Condition Description
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