Parameter No. Function name Data Default data Unit
H411
Input Phase Loss Pro-
tection Function Selec-
tion
0: Disable (Continue to run)
1: Enable (Trip)
1 -
H412
Output Phase Loss
Protection Function
Selection
0: Disable (Continue to run)
1: Enable (Trip)
0 -
• Input phase loss protection
If excessive stress is generated on the main circuit devices as a result of the loss of the three-phase
power supply input to the inverter or the unbalance between phases, it is detected and the input loss
protection function (alarm code: Lin) is activated.
If the load to be connected is light and a DC reactor has been connected, the stress on the main
circuit devices is low. Therefore, even if there is an input loss or an unbalance between phases, the
loss may not be detected.
•
Output phase loss protection
If an output loss is detected during the inverter operation, the output loss protection function (alarm
code: OPL) is activated.
In a configuration where an electromagnetic contactor is connected at the output side, if the electro-
magnetic contactor turns OFF during operation, the current of all phases becomes zero. In such a
case, the output loss protection function is not activated.
7-8-28
Clearing of Integrated Power (KHC)
When this terminal command is turned ON, the integrated power is cleared to zero. Integrating opera-
tion is not performed while this terminal command is ON. To resume integrating operation, turn this
command OFF.
Parameter No. Function name Data
Default da-
ta
Unit
E01 to E05, E98,
E99
Input Terminal [DI1] to [DI7]
Function Selection
164: KHC (Integrated power clear) - -
7 Other Functions
7-112
M1 Series Standard Type User's Manual (I669)
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