alarm "emergency circuit not fed"

subynth002

Member

S

Join Date

Nov 2016

Location

jakarta

Posts

2

• Nov 7, 2016

• #1

I have problem with plc siemens that continue alarms "Emergency circuit not fed, how to fix it ? Thanks

 

DwSoFt

Lifetime Supporting Member

D

Join Date

Mar 2012

Location

Alberta

Posts

960

• Nov 7, 2016

• #2

Sounds to.me that either the Emergency Stop button is pressed in or a fuse/breaker for it is open... that would be your hardwired safety interlock signal into the PLC so it's not the PLC. You. End a multimeter and to.trace some.wires.

 

mk42

Lifetime Supporting Member

M

Join Date

Jun 2013

Location

MI

Posts

3,263

• Nov 7, 2016

• #3

I'm not sure where you read the alarm, but that sounds like something that would have been written by the machine builder, not one of the alarms built into the PLC.

 

subynth002

Member

OP

S

Join Date

Nov 2016

Location

jakarta

Posts

2

• Nov 7, 2016

• #4

On the display monitor it shown message A351 - Emergency circuit not fed
And when I'd turn on some machine by clicking on the display monitor, it doesn't works. Seems like the PLC and the machines doesn't connected.

 

Logix_Stef

Member

Join Date

Oct 2014

Location

Havant

Posts

85

• Nov 7, 2016

• #5

Check whether the power supplies are OK, could be a blown fuse in the control circuit. Is the PLC actually powered up? As suggested above, this sounds more like a control circuit problem than a PLC problem.