Omron M1 Series User Manual page 604

7 Other Functions
Parameter No.
H411
H412
• 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.
E01 to E05, E98,
E99
7-112
Function name
Input Phase Loss Pro-
0: Disable (Continue to run)
tection Function Selec-
1: Enable (Trip)
tion
Output Phase Loss
0: Disable (Continue to run)
Protection Function
1: Enable (Trip)
Selection
Function name
Input Terminal [DI1] to [DI7]
Function Selection
Data
Data
164: KHC (Integrated power clear)
M1 Series Standard Type User's Manual (I669)
Default data Unit
1 -
0 -
Default da-
Unit
ta
- -