184
Unidrive M400 User Guide
Issue Number: 2
Over Volts
DC bus voltage has exceeded the peak level or maximum continuous level for 15 seconds
2
The
OV
trip indicates that the DC bus voltage has exceeded the VM_DC_VOLTAGE[MAX] or
VM_DC_VOLTAGE_SET[MAX] for 15 s. The trip threshold varies depending on voltage rating of the drive as shown below.
Sub-trip Identification
Recommended actions:
•
Increase deceleration ramp (Pr
00.004
)
•
Decrease the braking resistor value (staying above the minimum value)
•
Check nominal AC supply level
•
Check for supply disturbances which could cause the DC bus to rise
•
Check motor insulation using a insulation tester
Phase Loss
Supply phase loss
32
The
Phase Loss
trip indicates that the drive has detected an input phase loss or large supply imbalance. The drive will
attempt to stop the motor before this trip is initiated. If the motor cannot be stopped in 10 seconds the trip occurs
immediately. The
PH.Lo
trip works by monitoring the ripple voltage on the DC bus of the drive, if the DC bus ripple exceeds
the threshold, the drive will trip on PH.Lo. Potential causes of the DC bus ripple are input phase loss, Large supply
impedance and severe output current instability.
Input phase loss detection can be disabled when the drive is required to operate from the DC supply or from a single phase
supply in
Input Phase Loss Detection Mode
(06.047).
Recommended actions:
•
Check the AC supply voltage balance and level at full load
•
Check the DC bus ripple level with an isolated oscilloscope
•
Check the output current stability
•
Reduce the duty cycle
•
Reduce the motor load
•
Disable the phase loss detection, set Pr
06.047
to 2.
Power Board HF
Power board HF
235
Power processor hardware fault.
Recommended action:
•
Hardware fault - Contact the supplier of the drive
Power Comms
Communication has been lost / errors detected between power control
93
The
Power Comms
trip is initiated if there is no communications between power control. The reason for the trip can be
identified by the sub-trip number.
Recommended actions:
•
Hardware fault – Contact the supplier of the drive
Voltage rating
VM_DC_VOLTAGE[MAX]
VM_DC_VOLTAGE_SET[MAX]
100
415
410
200
415
410
400
830
815
Source
xx
y
zz
Control
system
00
0
01: Instantaneous trip when the DC bus voltage exceeds
VM_DC_VOLTAGE[MAX].
Control
system
00
0
02: Time delayed trip indicating that the DC bus voltage is above
VM_DC_VOLTAGE_SET[MAX].
Power
system
01
0
00: Instantaneous trip when the DC bus voltage exceeds
VM_DC_VOLTAGE[MAX].
Source
xx
y
zz
Control
system
00
0
00: Phase loss detected based on control system feedback. The drive
attempts to stop the drive before tripping unless bit 2 of
Action On Trip
Detection
(10.037) is set to one.
Содержание Unidrive M400
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