5.5 Alarm Detection
YASKAWA ELECTRIC
TOEP C710687 02B FSDrive-MV1000 Instructions
169
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5
Digital Operator Display
Minor Fault Name
Uv
Undervoltage
One of the following conditions occurred while the drive was stopped (a Run command was not
entered):
• DC bus voltage dropped below the level specified in L2-05.
• Contactor to suppress inrush current in the drive was opened.
• Low voltage in the control drive input power.
Cause
Possible Solutions
Minor Fault Output
H2-
=10
Phase loss in the drive input power
Check for wiring errors in the main circuit drive input power. Correct the
wiring.
Yes
Loose wiring in the drive input power terminals
Retighten the terminals to the tightening torques specified in this manual.
Refer to Wire Gauges and Tightening Torques on page 91
for details.
There is a problem with the drive input power
voltage.
Lower the voltage of the drive input power so it is within the limits listed
in the specifications.
The power has been interrupted.
Correct the drive input power.
Digital Operator Display
Minor Fault Name
VUB
Voltage Unbalance
The sum of the detected output voltages of the three phases exceeded the detection level for
longer than the stipulated time.
Cause
Possible Solutions
Minor Fault Output
H2-
=10
The motor has been damaged due to
overheating or the motor insulation is damaged.
Check the insulation resistance of the motor. Replace the motor.
Yes
One of the motor cables has shorted out or there
is a grounding problem.
Check the motor cable. Remove the short circuit and reapply power.
Check the resistance between the motor cables and ground terminal
.
Replace the cable.
The output side cable wiring is wrong.
Correct the wiring.
Содержание FSDrive-MV1000 Series
Страница 8: ...8 YASKAWA ELECTRIC TOEP C710687 02B FSDrive MV1000 Instructions...
Страница 38: ...1 4 Component Names and Configurations 38 YASKAWA ELECTRIC TOEP C710687 02B FSDrive MV1000 Instructions...
Страница 106: ...3 9 Wiring Check 106 YASKAWA ELECTRIC TOEP C710687 02B FSDrive MV1000 Instructions...
Страница 136: ...4 9 Checking and Saving Parameter Default Values 136 YASKAWA ELECTRIC TOEP C710687 02B FSDrive MV1000 Instructions...
Страница 210: ...6 7 Spare Parts 210 YASKAWA ELECTRIC TOEP C710687 02B FSDrive MV1000 Instructions...
Страница 222: ...B 1 European Standards 222 YASKAWA ELECTRIC TOEP C710687 02B FSDrive MV1000 Instructions...