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Unidrive M702 User Guide 277
Issue Number: 3
13.6 Alarm indications
In any mode, an alarm is an indication given on the display by alternating
the alarm string with the drive status string on the first row and showing
the alarm symbol in the last character in the first row. If an action is not
taken to eliminate any alarm except "Auto Tune and Limit Switch" the
drive may eventually trip. Alarms are not displayed when a parameter is
being edited, but the user will still see the alarm character on the upper
row.
Table 13-7 Alarm indications
13.7 Status indications
Table 13-8 Status indications
Table 13-9 Option module and NV Media Card and other status
indications at power-up
13.8 Displaying the trip history
The drive retains a log of the last ten trips that have occurred. Trip 0
(10.020) to Trip 9 (10.029) store the most recent 10 trips that have
occurred where Trip 0 (10.020) is the most recent and Trip 9 (10.029) is
the oldest. When a new trip occurs it is written to Trip 0 (10.020) and all
the other trips move down the log, with oldest being lost. The date and
time when each trip occurs are also stored in the date and time log, i.e.
Trip 0 Date (10.041) to Trip 9 Time (10.060). The date and time are taken
from Date (06.016) and Time (06.017). Some trips have sub-trip
numbers which give more detail about the reason for the trip. If a trip has
a sub-trip number its value is stored in the sub-trip log, i.e. Trip 0 Sub-trip
Number (10.070) to Trip 9 Sub-trip Number (10.079). If the trip does not
have a sub-trip number then zero is stored in the sub-trip log.
If any parameter between Pr 10.020 and Pr 10.029 inclusive is read by
serial communication, then the trip number in Table 13-4 is the value
transmitted.
The trip logs can be reset by writing a vale of 255 in Pr 10.038.
Alarm string Description
Brake Resistor
Brake resistor overload. Braking Resistor Thermal
Accumulator (10.039) in the drive has reached 75 %
of the value at which the drive will trip.
Motor Overload
Motor Protection Accumulator (04.019) in the drive
has reached 75 % of the value at which the drive
will trip and the load on the drive is >100 %.
Ind Overload
Regen inductor overload. Inductor Protection
Accumulator (04.019) in the drive has reached 75 %
of the value at which the drive will trip and the load
on the drive is >100 %.
Drive Overload
Drive over temperature. Percentage Of Drive
Thermal Trip Level (07.036) in the drive is greater
than 90 %.
Auto Tune
The autotune procedure has been initialized and an
autotune in progress.
Limit Switch
Limit switch active. Indicates that a limit switch is
active and that is causing the motor to be stopped.
Upper row
string
Description
Drive
output
stage
Inhibit
The drive is inhibited and cannot be run.
The SAFE TORQUE OFF signal is not
applied to SAFE TORQUE OFF terminals
or Pr 06.015 is set to 0
Disabled
Ready
The drive is ready to run. The drive enable
is active, but the drive inverter is not active
because the final drive run is not active
Disabled
Stop The drive is stopped / holding zero speed. Enabled
Run The drive is active and running Enabled
Scan
The drive is enabled in Regen mode and is
trying to synchronize to the supply
Enabled
Supply Loss Supply loss condition has been detected Enabled
Deceleration
The motor is being decelerated to zero
speed / frequency because the final drive
run has been deactivated.
Enabled
dc injection The drive is applying dc injection braking Enabled
Position
Positioning / position control is active
during an orientation stop
Enabled
Trip
The drive has tripped and no longer
controlling the motor. The trip code
appears in the lower display
Disabled
Active
The regen unit is enabled and
synchronized to the supply
Enabled
Under
Voltage
The drive is in the under voltage state
either in low voltage or high voltage mode
Disabled
First row
string
Second row string Status
Booting Parameters Parameters are being loaded
Drive parameters are being loaded from a NV Media Card
Booting User Program User program being loaded
User program is being loaded from a NV Media Card to the drive
Booting
Option
Program
User program being loaded
User program is being loaded from a NV Media Card to the option
module in slot X
Writing To NV Card
Data being written to NV Media
Card
Data is being written to a NV Media Card to ensure that its copy of the
drive parameters is correct because the drive is in Auto or Boot mode
Waiting For Power System Waiting for power stage
The drive is waiting for the processor in the power stage to respond
after power-up
Waiting For Options Waiting for an option module
The drive is waiting for the Options Modules to respond after power-up
Uploading
From
Options Loading parameter database
At power-up it may be necessary to update the parameter database
held by the drive because an option module has changed or because
an applications module has requested changes to the parameter
structure. This may involve data transfer between the drive an option
modules. During this period ‘Uploading From Options’ is displayed
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