138
6. PROTECTIVE FUNCTIONS
6.1 Converter unit fault and alarm indications
6
PROTECTIVE FUNCTIONS
This chapter explains the "PROTECTIVE FUNCTIONS" that operate in this product.
Always read the instructions before use.
6.1
Converter unit fault and alarm indications
• When the converter unit detects a fault, the PU displays an indication such as error message or warning, or a protective
function activates to shut off the inverter output in accordance with the fault.
• When any fault occurs, take an appropriate corrective action, then reset the converter unit or the inverter, and resume the
operation. Restarting the operation without a reset may break or damage the converter unit or the inverter.
• When a protective function is activated, note the following points.
• Converter unit fault or alarm indications are categorized as follows:
NOTE
• The last eight faults can be displayed on the operation panel. (Fault history) (For the operation, refer to
.)
Item
Description
Fault signal
Opening the magnetic contactor (MC) provided on the input side of the converter unit at a fault occurrence
shuts off the control power to the converter unit, therefore, the fault output will not be retained.
Fault indication
When a protective function is activated, the PU displays a fault indication.
Operation restart method
While a protective function is activated, the inverter output is kept shutoff. Reset the converter unit or the
inverter to restart the operation.
Displayed item
Description
Error message
A message regarding operational fault and setting fault by the operation panel is displayed. The inverter output
is not shut off.
Warning
The inverter output is not shut off even when a warning is displayed. However, failure to take appropriate
measures will lead to a fault.
Alarm
The inverter output is not shut off. An Alarm (LF) signal can also be output with a parameter setting.
Fault
When a protective function is activated, the inverter output is shut off and a Fault (ALM) signal is output.
Содержание FR-CC2-N Series
Страница 61: ...60 3 PRECAUTIONS FOR USE OF THE CONVERTER UNIT 3 4 Checklist before starting operation MEMO ...
Страница 137: ...136 5 PARAMETERS 5 10 Checking parameters changed from their initial values initial value change list MEMO ...
Страница 153: ...152 6 PROTECTIVE FUNCTIONS 6 6 Check first when you have a trouble MEMO ...
Страница 165: ...164 7 PRECAUTIONS FOR MAINTENANCE AND INSPECTION 7 2 Measurement of main circuit voltages currents and powers MEMO ...
Страница 171: ...170 8 SPECIFICATIONS 8 3 Outline dimension drawings MEMO ...