Badger
Member
I have a FX 2NC and the power led is flashing on and off no other indicators are on anybody seen this before.
Mitzi FX Flashing power LED
- Thread starter Badger
- Start date
Badger
Member
OP
Sorry PLC is FX 124MR had wrong info' givenBadger said:
Goody
Member
Without getting the spec manual that comes with each plc
A flashing power led usually means a dead shourt on the output 24VDC.
This is not a special signal - what is happening is either too much load or a dead short is across the + and -
The 24vdc supply automatically shuts down then restarts, sees the short again and shuts down causing the power led to flash.
I have had this before and the dead short was on for more than 8 hours with the unit powered up.
When I removed the wires from the 24V the plc sprang back into life like nothing was wrong. When I found the short (and it was a dead short) and repaired it all was well again .
A flashing power led usually means a dead shourt on the output 24VDC.
This is not a special signal - what is happening is either too much load or a dead short is across the + and -
The 24vdc supply automatically shuts down then restarts, sees the short again and shuts down causing the power led to flash.
I have had this before and the dead short was on for more than 8 hours with the unit powered up.
When I removed the wires from the 24V the plc sprang back into life like nothing was wrong. When I found the short (and it was a dead short) and repaired it all was well again .
Badger
Member
OP
Cheers Goody I'll go checkon it now
tragically1969
Member
This can also happen if you common the PLC 24VDC supply terminal to an external 24VDC PSU
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