Unidrive M100 / M101 Control User Guide
89
Issue Number: 1
Oht.P
Power stage over temperature
22
This trip indicates that a power stage over-temperature has been detected. From the sub-trip ‘xxyzz’, the Thermistor
location is identified by ‘zz’.
Recommended actions:
•
Check enclosure / drive fans are still functioning correctly
•
Force the heatsink fans to run at maximum speed
•
Check enclosure ventilation paths
•
Check enclosure door filters
•
Increase ventilation
•
Reduce the drive switching frequency
•
Reduce duty cycle
•
Increase acceleration / deceleration rates
•
Use S ramp (Pr
02.006
)
•
Reduce motor load
•
Check the derating tables and confirm the drive is correctly sized for the application.
•
Use a drive with larger current / power rating
OI.A1
Analog input 1 over-current
189
Current input on analog input 1 exceeds 24mA.
OI.AC
Instantaneous output over current detected
3
The instantaneous drive output current has exceeded VM_DRIVE_CURRENT_MAX.
This trip cannot be reset until 10s after the trip was initiated.
Recommended actions/checks:
•
Increase acceleration/deceleration rate
•
If seen during autotune reduce the voltage boost
•
Check for short circuit on the output cabling
•
Check integrity of the motor insulation using an insulation tester
•
Is the motor cable length within limits for the frame size?
•
Reduce the values in the current loop gain parameters
OI.br
Braking IGBT over current detected: short circuit protection for the braking IGBT activated
4
The
OI.br
trip indicates that over current has been detected in braking IGBT or braking IGBT protection has been activated.
This trip cannot be reset until 10s after the trip was initiated.
Recommended actions:
•
Check brake resistor wiring
•
Check braking resistor value is greater than or equal to the minimum resistance value
•
Check braking resistor insulation
OI.SC
Output phase short-circuit
228
Over-current detected on drive output when enabled. Possible motor ground fault.
Recommended actions:
•
Check for short circuit on the output cabling
•
Check integrity of the motor insulation using an insulation tester
•
Is the motor cable length within limits for the frame size?
Trip
Diagnosis
Source
xx
y
zz
Description
Power system
01
0
zz
Thermistor location in the drive defined by zz
Drive size
Trip temperature (°C)
Trip reset temperature (°C)
1 to 4
95
90
Содержание Unidrive M100
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