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7-3
Fault
display
Probable cause and remedy
Fault name and
meaning
%U
Overvoltage (OV)
The main circuit DC
voltage has reached the
overvoltage detection
level (410 VDC).
•
The deceleration time is too short.
→
Increase the deceleration time.
•
The power supply voltage is too high.
→
Decrease the voltage so it will be within
specifications.
•
There is excessive regenerative energy due to
overshooting at the time of acceleration.
→
Suppress the overshooting as much as
possible.
uU1
Main circuit
undervoltage (UV1)
The main circuit DC
voltage has reached the
undervoltage detection
level (200 VDC for the
3G3JV-A2
and 160
VDC for the
3G3JV-AB
).
•
Power supply to the Inverter has phase loss, pow-
er input terminal screws are loose, or the power
cable is disconnected.
→
Check the above and take necessary
countermeasures.
•
Incorrect power supply voltage
→
Make sure that the power supply voltage is
within specifications.
•
Momentary power interruption has occurred.
→
Use the momentary power interruption
compensation (Set n47 so that the Inverter
restarts after power is restored)
→
Improve the power supply.
•
The internal circuitry of the Inverter is damaged.
→
Change the Inverter.
%h
Radiation fin
overheated (OH)
The temperature of the
radiation fins of the
Inverter has reached
110
j
C
±
10
j
C.
•
The ambient temperature is too high.
→
Ventilate the Inverter or install a cooling unit.
•
The load is excessive.
→
Reduce the load.
→
Decrease the Inverter capacity.
•
The V/f setting is incorrect.
→
Reduce the V/f set voltage.
•
The acceleration/deceleration time is too short.
→
Increase the acceleration/deceleration time.
•
The ventilation is obstructed.
→
Change the location of the Inverter to meet the
installation conditions.
•
The cooling fan of the Inverter does not work.
→
Replace the cooling fan.
Maintenance Operations
Chapter 7
Summary of Contents for SYSDRIVE 3G3JV-AB001
Page 1: ...USER S MANUAL FIRST DRAFT SYSDRIVE 3G3JV Compact Simplified Inverter Cat No I528 E1 1...
Page 3: ...Chapter 1 Overview 1 1 Function 1 2 Nomenclature 1...
Page 9: ...Chapter 2 Design 2 1 Installation 2 2 Wiring 2...
Page 43: ...Chapter 3 Preparing for Operation and Monitoring 3 1 Nomenclature 3 2 Outline of Operation 3...
Page 52: ...3 10 Preparing for Operation and Monitoring Chapter 3...
Page 53: ...Chapter 4 Test Run 4 1 Procedure for Test Run 4 2 Operation Example 4...
Page 62: ...4 10 Test Run Chapter 4...
Page 131: ...7 22 Maintenance Operations Chapter 7...
Page 132: ...Chapter 8 Specifications 8 1 Inverter Specifications 8 2 Option Specifications 8...
Page 138: ...Chapter 9 List of Parameters 9...
Page 150: ...Chapter 10 Using the Inverter for a Motor 10...
Page 165: ...Revision History 10 2...
Page 166: ...Cat No I528 E1 1 SYSDRIVE 3G3JV Compact Simplified Inverter USER S MANUAL...