cjd Posted July 23, 2006 Share Posted July 23, 2006 hi, hope someone can help. I've got a galaxy 60 panel and have currently got 2 keypads on it (bothe the old modern security systems type.) i want to add another RKP but for some unknown reason to me it won't work. The new RKP will flash *'s, but then the other 2 RKP's dont respond to anything i,e, i cant put any codes it etc. I've just upraded from version 1.?? to version 2.10, but it hasnt made any difference. as soon as i connect the new RKP to the power supply the other 2 start bleeping radomly and will not respond - until i disconnect the new one i want to add. I've tried another keypad,but it doesnt do anything. Do i need a new power supply that will allow me to add this RKP, or do i need to alter something on the main PCB? Help would be appreciated. Thanks Link to comment https://www.thesecurityinstaller.co.uk/community/topic/11427-do-i-need-a-new-power-supply/ Share on other sites More sharing options...
whistle Posted July 23, 2006 Share Posted July 23, 2006 Have you addressed it correctley ? Is it an old Thorn one? Link to comment https://www.thesecurityinstaller.co.uk/community/topic/11427-do-i-need-a-new-power-supply/#findComment-108005 Share on other sites More sharing options...
cjd Posted July 23, 2006 Author Share Posted July 23, 2006 Have you addressed it correctley ?Is it an old Thorn one? it's not and old thorn one, i have addressed it correctly changed the selector switch from "0" to "2" as "0" & "1" are the other 2 keypads. Link to comment https://www.thesecurityinstaller.co.uk/community/topic/11427-do-i-need-a-new-power-supply/#findComment-108008 Share on other sites More sharing options...
Brian c Posted July 23, 2006 Share Posted July 23, 2006 How have you wired it? If it is at the end of the line (connected to the last RKP) you need to put the EOL resistor across A+B of the last RKP. (new one) There may be a compatibilty issue with the RKP's but I'm not too sure of that. If you don't know......ask. Link to comment https://www.thesecurityinstaller.co.uk/community/topic/11427-do-i-need-a-new-power-supply/#findComment-108013 Share on other sites More sharing options...
cjd Posted July 23, 2006 Author Share Posted July 23, 2006 How have you wired it? If it is at the end of the line (connected to the last RKP) you need to put the EOL resistor across A+B of the last RKP. (new one)There may be a compatibilty issue with the RKP's but I'm not too sure of that. from what you have said, i dont think i've done it right. i assume it's supposed to be connected after RKP1, and not as i've done it RKP0 to RKP1 and from RKP 0 to RKP 2. am i correct in assuming that the power from one keypad is OK to be used onto the other, and that i dont have to run separtae wires from the panel to each RKP? Link to comment https://www.thesecurityinstaller.co.uk/community/topic/11427-do-i-need-a-new-power-supply/#findComment-108020 Share on other sites More sharing options...
Brian c Posted July 23, 2006 Share Posted July 23, 2006 I think you're describing that you have 'starred' off the data line, which is not recommended. The data should be wired in a daisy chain, with the EOL connected to the last in line. You can use the same power supply for all 3 RKP's, depending on the length of the runs.(Volt Drop) If you do need another power supply, you should common the negs. If you don't know......ask. Link to comment https://www.thesecurityinstaller.co.uk/community/topic/11427-do-i-need-a-new-power-supply/#findComment-108023 Share on other sites More sharing options...
antinode Posted July 23, 2006 Share Posted July 23, 2006 I think you're describing that you have 'starred' off the data line, which is not recommended. The data should be wired in a daisy chain, with the EOL connected to the last in line. You can use the same power supply for all 3 RKP's, depending on the length of the runs.(Volt Drop) If you do need another power supply, you should common the negs. If I recall correctly Bri you can star off the data line but you must fit a 680 ohm resistor on each keypad that is starred. Like you say though, it's not the best way to do it. Trade Member Link to comment https://www.thesecurityinstaller.co.uk/community/topic/11427-do-i-need-a-new-power-supply/#findComment-108025 Share on other sites More sharing options...
cjd Posted July 23, 2006 Author Share Posted July 23, 2006 If I recall correctly Bri you can star off the data line but you must fit a 680 ohm resistor on each keypad that is starred. Like you say though, it's not the best way to do it. thanks for that, i'll have to do some rewiring then!! is it not acceptable to star out - would it case problems, or does it make things easier if their daisychained Link to comment https://www.thesecurityinstaller.co.uk/community/topic/11427-do-i-need-a-new-power-supply/#findComment-108028 Share on other sites More sharing options...
Brian c Posted July 23, 2006 Share Posted July 23, 2006 If I recall correctly Bri you can star off the data line but you must fit a 680 ohm resistor on each keypad that is starred. Like you say though, it's not the best way to do it. You can star off the line from the panel not a RKP and the 680 resistor should be cut in the panel and one fitted to each RKP, like you say. thanks for that, i'll have to do some rewiring then!! is it not acceptable to star out - would it case problems, or does it make things easier if their daisychained Yes, it causes problems like ***** displayed on RKP! If you don't know......ask. Link to comment https://www.thesecurityinstaller.co.uk/community/topic/11427-do-i-need-a-new-power-supply/#findComment-108029 Share on other sites More sharing options...
Guest Posted July 23, 2006 Share Posted July 23, 2006 doesn't the resistor size vary according the amount of keypads (if star network)? Link to comment https://www.thesecurityinstaller.co.uk/community/topic/11427-do-i-need-a-new-power-supply/#findComment-108032 Share on other sites More sharing options...
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