13 replies to this topic

[andyh747]

Panel: Scantronic iON40

I need to utilise an additional voltage free output to control an electronic water control valve from the panel. The water panel utilises a voltage free contact which can be either NO or NC. The problem is that the iON 40 only has two voltage free outputs which already used for the siren and strobe. Ouputs 3 and 4 are transistorised outputs giving 12v when inactive and 0v when active although this can be changed on the panel. My first idea is to utilise a 12v dc relay which is fed by output 3 with the contacts from the water panel connected to the relay output.

Any other suggestions?

[fozzies]

I'd say the relay was the right way to do it.

[steveo44]

Put the strobe onto the bell output?

[andyh747]

steveo44, on 29 January 2012 - 09:08 PM, said:

Put the strobe onto the bell output?

I had thought of that idea but the panel has the ability to activate the strobe on alarm set. Obviously this would then also activate the siren if it was on the same contact. I currently use this feature as a visual clue that arming has been successful. However if I disabled this then I could put them both on the same output.

I think the relay sounds the best option.

[fozzies]

Depends on the current rating of the output as to whether u can double up strobe and bell o/p. relay is best/safest option

[jameswilson]

as above use a relay or use the other outputs to run the bell / strobe and free up the voltage free ones

[andyh747]

jameswilson, on 29 January 2012 - 10:15 PM, said:

as above use a relay or use the other outputs to run the bell / strobe and free up the voltage free ones

The sounder and strobe is an Texecom Odyssey 3 unit. Could this be moved from the voltage free contacts to the transistorised contacts without problem?

[jameswilson]

yes assuming the outputs can sink enough. What are they rated at?

[andyh747]

jameswilson, on 29 January 2012 - 10:40 PM, said:

yes assuming the outputs can sink enough. What are they rated at?

They are rated at 500ma each.

[jameswilson]

yeah thats fine then

[andyh747]

I've just got round to looking at changing the siren and strobe to the transistor driven outputs as opposed to the voltage free ones. However I'm not too sure if the Texecom module can be wired to these outputs. According to the installation instructions for the siren and strobe unit, the wiring is as follows:

A - 12v Permanent Positive Supply
B - (BELL) Negative Applied Output to Activate Siren
C - (TAMP) Negative Removed on Tamper Input
D - (0v) Permanent Negative Supply
S - (STRB) Negative Applied Output to Activate Strobe

The Scantronic outputs on the panel which I was hoping to use are transistor driven and able to sink 500mA when active. By default they are 0v when active and +12v when inactive. However the polarity can be changed on the panel.

So the question is whether the siren and strobe can be wired to the these outputs thus freeing up my voltage free outputs. If so could someone indicate the necessary connections?

Any help much appreciated.

[jameswilson]

Yes they can. Just wire the bell and strobe to the different outputs rather than use the relays

[andyh747]

Thanks James.

Have just moved bell and siren to other two outputs and all working well.

Can't thank you enough for your help. Appreciate you taking the time to respond.

[jameswilson]

no worries