fire alarms

[r.b]

Are end of line resistors used at sounders?I presume they arent needed because theres normally just sounder 1, sounder 2 etc. The ones I have been putting in are just obviously end of line at smoke detectors?

 

[Electroglow]

Yes they are

 

[Evans Electric]

+1

Detector zones and sounder circuits are monitored RB .

 

[batty]

Twinflex system can have sounders and call points and smokes all on the same zone although i think they do have a sounder circuit also.

 

[kerching]

Are end of line resistors used at sounders?I presume they arent needed because theres normally just sounder 1, sounder 2 etc. The ones I have been putting in are just obviously end of line at smoke detectors?

The panel needs them so that it 'knows' that there is not an open/short circuit.

Basically it 'looks down the wire' constantly and becomes moody and sulks like a petulant short 4rsed thieving ginger ex TX career crashing chef if it cannot see the EOLs.......... :coat

 

[Terry W]

Twinflex system can have sounders and call points and smokes all on the same zone although i think they do have a sounder circuit also.

bit a of tangent there.....

their detection circuits support there sounders either as a stand alone device or incorprated within head / call point, however not EOL's as such seclected via DIL, unused circuit programmed off.

They also have a single sounder circuit which has proper EOL,

 

[SLIPSHOD & SLAPDASH]

Always a EOL device but not necessarily a resistor. I have seen capacitors, diodes and other odd unrecognisable things

 

[Terry W]

Always a EOL device

apart fromthose which use a dil switch

I have seen capacitors, diodes and other odd unrecognisable things

EOLM

 

[r.b]

Yes they are

So basically the end of line of the sounder circuits where you have line neutraul and earth where the connections go in I presume the end of line resistor link will be between line and neutraul and this is needed?

 

[Electroglow]

Read the insructions

 

[SLIPSHOD & SLAPDASH]

apart fromthose which use a dil switch

And what do you think the dil switch is doing then ?

 

[Electroglow]

Dilling around