Emerson Unidrive M101 - Page 90

Safety
information
Product
information
Mechanical
installation
Electrical
installation
Getting
started
Basic
parameters
Running the
motor
Optimization NV Media Card
Advanced
parameters
Diagnostics UL Listing
90 Unidrive M100 / M101 Control User Guide
Issue Number: 1
Out.P Output phase loss detected
98
The Out.P trip indicates that phase loss has been detected at the drive output.
If Pr 05.042 = 1, the physical output phases are reversed, and so sub-trip 3 refers to physical output phase V and sub-trip 2
refers to physical output phase W.
Recommended actions:
• Check motor and drive connections
• To disable the trip set Output Phase Loss Detection Enable (06.059) = 0
OV 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 an insulation tester
Trip Diagnosis
Sub-trip Reason
1 U phase detected as disconnected when drive enabled to run.
2 V phase detected as disconnected when drive enabled to run.
3 W phase detected as disconnected when drive enabled to run.
4
The drive output frequency is above 4 Hz and a phase is disconnected for the time
specified by Output Phase Loss Detection Time (06.058).
NOTE
Voltage rating VM_DC_VOLTAGE[MAX] VM_DC_VOLTAGE_SET[MAX]
100 510 400
200 510 400
400 870 800
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].