Nick Undrell Posted April 14, 2021 Posted April 14, 2021 Hi All, I’ve finally gotten around to wiring out Honeywell Galaxy 20 alarm system. The Bell Boxes have been on the wall for about 3 yrs and were installed by our electrician. I decided it’ll be worth testing the bell boxes to confirm they are working as expected. The rear box is working, connected to 12v psu I get slow alternate flashing LEDs. I can then operate the strobe and sounder by grounding the appropriate wire. The front bell box however is not working. When connected to 12volts the sounder goes off for ~5secs and the left hand led flashes. Looking at the instructions this indicates a tamper fault. However if I measure the resistance between the tamper wire and 0v wire I get ~2.5ohm, which is almost identical to the rear box. Do you think this is actually a fault or could it be because the onboard battery needs charging? Unfortunately I do have a set of ladders to reach the bell box. Any advise great fully received Nick Quote
james.wilson Posted April 14, 2021 Posted April 14, 2021 On a bell the tamper isn't a switch it should be 0v if the tamper is ok Meter between tr and ho + you should get >12v Quote securitywarehouse Security Supplies from Security Warehouse Trade Members please contact us for your TSI vetted trade discount.
sixwheeledbeast Posted April 14, 2021 Posted April 14, 2021 If using two boxes you would usually series the bell tampers. For Texecom bells the first one is wired "normal" and then the second bell is seriesed with the microswitch terminals leaving the tamper terminal unused (as per instructions). I would suspect there is a tamper issue if the bell is stuck held-off. Quote
Nick Undrell Posted April 14, 2021 Author Posted April 14, 2021 53 minutes ago, james.wilson said: On a bell the tamper isn't a switch it should be 0v if the tamper is ok Meter between tr and ho + you should get >12v I have measured the voltage and I do get 12v between these terminals. Quote
Nick Undrell Posted April 14, 2021 Author Posted April 14, 2021 45 minutes ago, sixwheeledbeast said: If using two boxes you would usually series the bell tampers. For Texecom bells the first one is wired "normal" and then the second bell is seriesed with the microswitch terminals leaving the tamper terminal unused (as per instructions). I would suspect there is a tamper issue if the bell is stuck held-off. I am planning to borrow a set of ladders to check the tamper circuit and wiring at the weekend. Reading the instructions it would appear the internal battery needs to be enabled. Could this be the issue? The tamper line is providing 0v, confirmed by 12v reading between it and +12v. Could a defective internal battery be the problem? I also now realise the boxes should have their tamper circuits serialised. The rear box however is even less accessible than the front box (due to roof pitches on ground floor extensions making ladder access impossible). I was therefore planning to use the tamper line of the front bell to feed the 0v line of the rear bell. The tamper line of the rear bell would then go back to the alarm panel. I am also concerned the current load of both boxes may be too much for the panel. In which case I was planning to only connect the strobe on the rear box. Quote
PeterJames Posted April 14, 2021 Posted April 14, 2021 is there a 5 sec battery link on these boxes? Quote
Imnotshankled Posted April 14, 2021 Posted April 14, 2021 (edited) 34 minutes ago, PeterJames said: is there a 5 sec battery link on these boxes? No texecom are preset to 15 min and can't be adjusted Seems like the front bell box has failed i had a couple odysseys fail in this way from water ingress Edited April 14, 2021 by Imnotshankled Quote
Imnotshankled Posted April 14, 2021 Posted April 14, 2021 Just now, Imnotshankled said: No texecom are preset to 15 min and can't be adjusted 49 minutes ago, Nick Undrell said: Reading the instructions it would appear the internal battery needs to be enabled. Could this be the issue? The tamper line is providing 0v, confirmed by 12v reading between it and +12v. Could a defective internal battery be the problem Texecom odyssey boxes dont monitor the battery Quote
sixwheeledbeast Posted April 14, 2021 Posted April 14, 2021 1 hour ago, Imnotshankled said: Texecom odyssey boxes dont monitor the battery Depends if it's Grade 3 model, even so it's a separate output. 1 Quote
Nick Undrell Posted April 15, 2021 Author Posted April 15, 2021 Thank you for the advice, you’ve confirmed my suspicions. I’ll get it off the wall this weekend and test it on the bench. But sounds like I need a new box Quote
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