BaconAndCabbage Posted August 3, 2020 Share Posted August 3, 2020 Hi, Does anyone know how the PGM output on the Visonic powermax+ is supposed to operate? I assumed originally that it was just pulled low when active, but it seems to be low all the time. You can see some info on topic here where another user was also confused by it: https://www.thesecurityinstaller.co.uk/community/topic/25353-powermax-pgm-output/ I've tried pulling it up with resistors, but it won't switch "off". Quote Link to comment Share on other sites More sharing options...
al-yeti Posted August 3, 2020 Share Posted August 3, 2020 6 minutes ago, BaconAndCabbage said: Hi, Does anyone know how the PGM output on the Visonic powermax+ is supposed to operate? I assumed originally that it was just pulled low when active, but it seems to be low all the time. You can see some info on topic here where another user was also confused by it: https://www.thesecurityinstaller.co.uk/community/topic/25353-powermax-pgm-output/ I've tried pulling it up with resistors, but it won't switch "off". Might floating so dosent react same way Quote Link to comment Share on other sites More sharing options...
BaconAndCabbage Posted August 3, 2020 Author Share Posted August 3, 2020 It doesn't appear to be floating, it has continuity with ground. Quote Link to comment Share on other sites More sharing options...
al-yeti Posted August 3, 2020 Share Posted August 3, 2020 9 minutes ago, BaconAndCabbage said: It doesn't appear to be floating, it has continuity with ground. Eh? Quote Link to comment Share on other sites More sharing options...
BaconAndCabbage Posted August 3, 2020 Author Share Posted August 3, 2020 It's connected to ground. I've checked with a meter and it's connected to ground. Quote Link to comment Share on other sites More sharing options...
al-yeti Posted August 3, 2020 Share Posted August 3, 2020 11 minutes ago, BaconAndCabbage said: It's connected to ground. I've checked with a meter and it's connected to ground. So it's negative remove then perhaps Or positive removed or something lol Quote Link to comment Share on other sites More sharing options...
sixwheeledbeast Posted August 3, 2020 Share Posted August 3, 2020 There is loads of options for what it does, pulse, toggle, pressing the star on the fobs, all in the "Define Outputs" settings. It maybe set to disabled? +ve applied IIRC but will not supply much current, as they are not designed for supplying power to much. Quote Link to comment Share on other sites More sharing options...
BaconAndCabbage Posted August 4, 2020 Author Share Posted August 4, 2020 I actually just want to use it to monitor when the alarm's set via a wifi dongle I made, so I need no current really. I have it set to turn on when home or away or armed, but it never changes from being a ground. Quote Link to comment Share on other sites More sharing options...
al-yeti Posted August 4, 2020 Share Posted August 4, 2020 2 hours ago, BaconAndCabbage said: I actually just want to use it to monitor when the alarm's set via a wifi dongle I made, so I need no current really. I have it set to turn on when home or away or armed, but it never changes from being a ground. Relay? Quote Link to comment Share on other sites More sharing options...
BaconAndCabbage Posted August 4, 2020 Author Share Posted August 4, 2020 Are you telling me to put a relay across it and see what happens? Quote Link to comment Share on other sites More sharing options...
james.wilson Posted August 4, 2020 Share Posted August 4, 2020 i would think you would need a t-relay but yes unless you have overloaded it already Quote securitywarehouse Security Supplies from Security Warehouse Trade Members please contact us for your TSI vetted trade discount. Link to comment Share on other sites More sharing options...
BaconAndCabbage Posted August 4, 2020 Author Share Posted August 4, 2020 I was hoping to avoid increasing complexity by adding a relay. All I need a 12v and 0v signal, What I wanted to do was put say a 4.7k resistor across it and 12V. That way I'd get 12V at the PGM pin when it was "off" and 0v when it was on. The issue of course is that it doesn't seem to ever turn off. Quote Link to comment Share on other sites More sharing options...
james.wilson Posted August 4, 2020 Share Posted August 4, 2020 1 hour ago, BaconAndCabbage said: I was hoping to avoid increasing complexity by adding a relay. All I need a 12v and 0v signal, What I wanted to do was put say a 4.7k resistor across it and 12V. That way I'd get 12V at the PGM pin when it was "off" and 0v when it was on. The issue of course is that it doesn't seem to ever turn off. id expect it to read a difference with a meter, unless the output is broken. If you cant read it with a dvm then a t relay wont help Quote securitywarehouse Security Supplies from Security Warehouse Trade Members please contact us for your TSI vetted trade discount. Link to comment Share on other sites More sharing options...
al-yeti Posted August 4, 2020 Share Posted August 4, 2020 2 hours ago, BaconAndCabbage said: I was hoping to avoid increasing complexity by adding a relay. All I need a 12v and 0v signal, What I wanted to do was put say a 4.7k resistor across it and 12V. That way I'd get 12V at the PGM pin when it was "off" and 0v when it was on. The issue of course is that it doesn't seem to ever turn off. Adding relay easier than whole discussion Quote Link to comment Share on other sites More sharing options...
BaconAndCabbage Posted August 6, 2020 Author Share Posted August 6, 2020 Adding a resistor is far easier than adding a power burning, heating up relay. However I'm wondering does it need something like a relay to draw more current so it can turn the pin off. I'm going to try and locate a relay and I'll report back. 1 Quote Link to comment Share on other sites More sharing options...
sixwheeledbeast Posted August 6, 2020 Share Posted August 6, 2020 "power burning, heating up relay"? A pull up resistor would dissipate the wattage across it as heat. Either way I think we are getting off topic you can test this with a meter it wouldn't need a load. If it's not switching then it's either not programmed correctly or blown. The reason it's common practice for installers use relays is for separation with any auxiliary device. Quote Link to comment Share on other sites More sharing options...
james.wilson Posted August 6, 2020 Share Posted August 6, 2020 1 hour ago, sixwheeledbeast said: "power burning, heating up relay"? A pull up resistor would dissipate the wattage across it as heat. Either way I think we are getting off topic you can test this with a meter it wouldn't need a load. If it's not switching then it's either not programmed correctly or blown. The reason it's common practice for installers use relays is for separation with any auxiliary device. Qfa Also the output maybe open without a pull up or down it won't show much logic wise Quote securitywarehouse Security Supplies from Security Warehouse Trade Members please contact us for your TSI vetted trade discount. Link to comment Share on other sites More sharing options...
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