Nidec Unidrive M200 User Manual page 140

Safety Product Mechanical
information information installation
Trip
OI.Sn Snubber over-current detected
This trip indicates that an over-current condition has been detected in the rectifier snubbing circuit, The exact cause of the
trip can be identified by the sub-trip number.
Source
Power
system
92
Recommended actions:
• Ensure the internal EMC filter is installed
• Ensure the motor cable length does not exceed the maximum for selected switching frequency
• Check for supply voltage imbalance
• Check for supply disturbance such as notching from a DC drive
• Check the motor and motor cable insulation with an insulation tester.
• Install a output line reactor or sinusoidal filter
OI.SC Output phase short-circuit
Over-current detected on drive output when enabled. Possible motor earth fault.
Recommended actions:
228
• 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?
Out.P Output phase loss detected
The Out.P trip indicates that phase loss has been detected at the drive output.
Sub-trip
98
NOTE
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
140
Electrical Getting Basic
installation started parameters
xx y
01 1
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.
The drive output frequency is above 4 Hz and a phase is disconnected for the time
4
specified by Output Phase Loss Detection Time (06.058).
Running the NV Media
Optimization
motor Card
Diagnosis
zz
00 Rectifier snubber over-current trip detected.
Reason
Onboard Advanced
Diagnostics
PLC parameters
Description
Unidrive M200 / M201 Control User Guide
Issue Number: 2
UL Listing