8-11
8-1-2 Warning Detection (Nonfatal Error)
The warning detection is a type of Inverter protective function that does not
operate the fault contact output and returns the Inverter to its original status
once the cause of the error has been removed. The Digital Operator
flashes and display the detail of the error. If a warning occurs, take
appropriate countermeasures according to the table below.
Note
Some warnings or some cases stop the operation of the Inverter as
described in the table.
H
Warning Displays and Processing
Fault
display
Fault name and Meaning
Probable cause and remedy
uU
(flashing)
Main circuit undervoltage
(UV)
The main circuit DC voltage has
reached the undervoltage
detection level (200 VDC for the
3G3MV-A2
j
, 160 VDC for the
3G3MV-AB
j
, and 400 VDC for
the 3G3MV-A4
j
).
·
Power supply to the Inverter has phase
loss, power input terminal screws are
loose, or the power line is disconnected.
®
Check the above and take necessary
countermeasures.
·
Incorrect power supply voltage
®
Make sure that the power supply
voltage is within specifications.
OU
(flashing)
Main circuit overvoltage
The main circuit DC voltage has
reached the overvoltage
detection level (410 VDC for
200-V Inverters, 820 VDC for
400-V Inverters).
·
The power supply voltage is too high.
®
Decrease the voltage so it will be
within specifications.
OH
(flashing)
Radiation fin overheated (OH)
The temperature of the
radiation fins of the Inverter has
reached 110
_
C
±
10
_
C.
·
The ambient temperature is too high.
®
Ventilate the Inverter or install a
cooling unit.
OH3
(flashing)
Warning/Fault contacts do
not change state.
OH3 (Inverter overheating
pre-alarm)
OH3 signal is input.
·
Release the input of inverter overheating
pre-alarm signal.
Maintenance Operations
Chapter 8
Summary of Contents for SYSDRIVE 3G3MV A2002
Page 1: ...USER S MANUAL SYSDRIVE 3G3MV Multi function Compact Inverter Cat No I527 E2 02...
Page 15: ...Chapter 1 Overview 1 1 Function 1 2 Nomenclature 1 3 New Features 1...
Page 24: ...Chapter 2 Design 2 1 Installation 2 2 Wiring 2...
Page 89: ...Chapter 4 Test Run 4 1 Procedure for Test Run 4 2 Operation Example 4...
Page 286: ...Chapter 9 Specifications 9 1 Inverter Specifications 9 2 Option Specifications 9...
Page 311: ...Chapter 10 List of Parameters 10...
Page 342: ...Chapter 11 Using the Inverter for a Motor 11...
Page 348: ...Appendix A Standard Models...