External Power Supply Disconnection Detection Function - Mitsubishi Electric MELSEC iQ-F FX5 User Manual

External power supply disconnection detection function

Detects that the 24 V DC external power supply is not being supplied or the supply stopped.
When external power supply off is detected, 'External power supply READY flag' (Un\G69, b7) turns off and the analog output
value changes to 0 V/0 mA independently of the other settings.
Operation
If no external power supply is input, the state is judged to be external power supply off, with 'External power supply READY
flag' (Un\G69, b7) turned off.
If the input of the external power supply stops, the state is judged to be external power supply off, with 'External power supply
READY flag' (Un\G69, b7) turned off.
Precautions
If the external power supply does not satisfy the requirements of the power supply specifications, the state may be determined
to be external power supply off.
For the power specifications for the external power supply, refer to Page 176 Power supply specifications.
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2.4 Functions