Comfort Automation/ Security System Forums > Third Party (interfacing to Comfort) > Miscellaneous Interfaces > Comfort and Visonic |
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Campbell Member
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After a recent browse in my local alarm toyshop, I purchased all the necessary bits (I think)to add the Visonic Wirefree to my Comfort 1 system and control the garage and alarm. Knowing there are a few on here with similar setup, I am hoping someone can advise the best way of wiring it up. This is being carefully SWMBO monitored to see if I wasted more money on toys....therefore I must get it right first time or get a verbal whipping on another unfinished idea. Purchased MCR 308 and RL8, keyfobs and a couple of door contacts. 1. Is it better to wire without using relays (less current) and can I incorporate DOEL. 2. I have limited zones left on comfort and intend wiring tamp, inact and jam together, any thoughts welcome 3. Is it recommended to power from Comfort or independantly. 4. I intend to use toggle or if then gode for garage door/alarm set etc. Can anyone advise. many thanks Campbell c.macd@btinternet.com |
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slychiu Administrator
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For Question 1, you dont need relays as the MCR308 (RF receiver?)should provide dry contacts which can be connected direct to Comfort, which can be programmed as the same zone type as the wired sensor You would not need DEOL resistors, no point as the MCR308 Receiver would be mounted in the Comfort enclosure Question3; You can power from Comfort but you will need to know how much current the MCR308 takes and how much current (max 1A) Comfort has to spare. Remember Slaves can also supply their own current to external devices |
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Campbell Member
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Thanks Chiu, I am intending mounting the MCR 308 approx 2 metres vertically up from the Comfort panel. Am I right in thinking the Comfort is a common negative panel and thereby the MCR -ve contact can be tied into comfort 12v -ve or com. MCR has only single contacts for zones, tamp, low bat jam and inactivity, and 12v +ve and -ve power supply. I'm well under 1A so no problems there :-) thx Campbell |
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slychiu Administrator
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Yes MCR -ve can be tied to Comfort COM Test that it does work because it seems like it may not be giving a dry contact, but an open collector output. Comfort also should work with open collector outputs You can use DEOL resistors if the MCR is mounted outside comfort regards |
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Campbell Member
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Chiu, I am hoping you can advise on best wiring for MCR 308 to Comfort.. Loooking at wiring in section 4.3 (figure 6) of Visonic manual http://www.cmacd.org/comfort/MCR308_English_Installation_Instructions.pdf and section 1.1 of quick reference http://www.cmacd.org/comfort/MCR308quickreference.pdf I believe both are SEOL... Can you advise how to wire in DEOL for either NO or NC that Comfort will work with. many thanks Campbell |
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slychiu Administrator
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The instructions state that MCR308 has open-collector outputs. This means that they can be connected direct to Comfort Zone Inputs. You do not need the relay interface module they mention Treat the MC308 outputs as regular contacts. You can connect the DEOL resistors ie 2K7 in series and 4K7 in parallel to the outputs and set Comfort zone shunts to DEOL, or set NO EOL resistors on the Comfort zone shunt and do not connect any EOL resistors. The MCR308 shows EOL resistors, but does not require these EOL resistors, that depends on the Alarm control panel only |
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Campbell Member
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Many thanks, I understand the in series resistor, but confess ignorance in how and where to connect the parallel 4k7 resistor. After this I 'll try not to ask any more questions for while.. thanks Campbell |
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slychiu Administrator
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I see your problem, their diagram shows one output only The 4K7 should be between the MCR308 output and ground which can be the COM on Comforts zone pins |
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Campbell Member
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Very many thanks...I did suspsect, but being a mechanical engineer thought I better ask the guru. thanks again Campbell |