Galaxy G2-20 Internal And External Sab Connections

[LACKEYLAK]

I have an internal Elmdene 600 sounder (SAB) and external Elmdene HS 700 siren/strobe (SAB) which I want to fit to a Galaxy G2-20.

A couple of answers needed please.

1: Can I connect the 600 sounder +H and -H to the AUX pwr on the board so as not to overload the 500mA rating on the boards SAB connections.

2: If I do this, can I still connect the -R on the 600 to the boards SAB siren trigger.

3: I assume I can't parallel the RTN (tamper) from both sounders to the boards SAB "T" input. Do I have to set one of the triggers as a zone input, and if so, as ther SAB tamper is only a singal wire, (neg trigger) what do I connect to the zone common.

For current rating,

1 x keypad

1 x dualtech PIR

1 x RF unit

All other detectors are RF.

Thanks for any help.

[james.wilson]

i would say that alone 2 sab wouldnt overlaod the standby capacity of that panel, but it depends what else is on it. Also it probably would exceed it in a alarm. Easy way to check is to meter the current they demand in both states.

[aismoresecur]

Agreed

the elmdene HS pulls about 200mA in alarm and the INT600 about 180mA.

As redbull says, you should meter the current in norm & full alarm conditions

[LACKEYLAK]

I'll meter them tomorrow and see, what do advise on the RTN (tamper) circuit?

[james.wilson]

you have a couple of choice but id probably series them up.

Basically feed the hold off neg of the 2nd sounder with the tamper return of the first. you could use a zone but you will need a relay ideally.

[Guest RJBsec]

I'll meter them tomorrow and see, what do advise on the RTN (tamper) circuit?

Take the tamper return from sounder 1 and apply it to -0 hold off on sounder 2 (supplying, not duplicating the connection) and take the tamper return from sounder 2 back to the panel.

[LACKEYLAK]

Ok borderline 500mA, so over time could blow the internal 500mA SAB fuse.

Would it be a good idea to put the external HS 700 in SCB mode to reduce the draw in alarm condition.

[Guest RJBsec]

Would it be a good idea to put the external HS 700 in SCB mode to reduce the draw in alarm condition.

Yes