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Unidrive M400 User Guide
Issue Number: 2
13.7 Status indications
Table 13-6 Status indications
Table 13-7 Option module 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 13-2 is the value
transmitted.
The trip logs can be reset by writing a value of 255 in Pr
10.038
.
13.9 Behaviour of the drive when tripped
If the drive trips, the output of the drive is disabled so the load coasts to a stop. If any trip occurs, the following read only parameters are frozen until
the trip is cleared. This is to help diagnose the cause of the trip.
If the parameters are not required to be frozen then this can be disabled by setting bit 4 of Pr
10.037
.
Upper row string
Description
Drive output
stage
Inhibit
The drive is inhibited and cannot be run. The SAFE TORQUE OFF signals are not applied to the SAFE
TORQUE OFF terminals or Pr
06.015
is set to 0. The other conditions that can prevent the drive from
enabling are shown as bits in
Enable Conditions
(06.010).
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 frequency.
Enabled
Run
The drive is active and running.
Enabled
Supply Loss
Supply loss condition has been detected.
Enabled
Deceleration
The motor is being decelerated to zero frequency because the final drive run has been deactivated.
Enabled
dc Injection
The drive is applying dc injection braking.
Enabled
Trip
The drive has tripped and no longer controlling the motor. The trip code appears in the lower display.
Disabled
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
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
Option
Waiting for an option module
The drive is waiting for the option module to respond after power-up
Uploading From
Option
Loading parameter database
At power-up it may be necessary to update the parameter database held in the drive because an option module has changed. This may involve data
transfer between the drive and option module. During this period ‘Uploading From Option’ is displayed.
Parameter Description
01.001
Frequency reference
01.002
Pre-skip filter reference
01.003
Pre-ramp reference
02.001
Post-ramp reference
03.001
Final demand ref
03.002
Estimated frequency
03.003
Frequency error
03.004
Frequency controller output
04.001
Current magnitude
04.002
Active current
04.017
Reactive current
05.001
Output frequency
05.002
Output voltage
05.003
Power
05.005
DC bus voltage
07.001
Analog input 1
07.002
Analog input 2
07.037
Temperature nearest to trip level
NOTE
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