External Power Supply Disconnection Detection Function - Mitsubishi Electric MELSEC iQ-R Series User Manual

1.11
External Power Supply Disconnection Detection
Function
This function detects that the external power supply 24VDC is not supplied or the supply stops.
When the external power supply disconnection is detected, 'External power supply READY flag' (X7) turns off, and the analog
output value becomes 0V/0mA regardless of the other settings.
Operation
When the external power supply is not input or when 200ms has not yet elapsed after the power supply is input, the power
supply is regarded as disconnected and 'External power supply READY flag' (X7) turns off.
When the external power supply input stops, the external power supply is regarded as disconnected and 'External power
supply READY flag' (X7) turns off.
Precautions
When the external power supply does not satisfy the requirements of the performance specifications, the external power
supply is regarded as disconnected.
For the performance specifications of the external power supply, refer to the following.
 MELSEC iQ-R Digital-Analog Converter Module User's Manual (Startup)

1.11 External Power Supply Disconnection Detection Function

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