mjw Posted June 2, 2006 Posted June 2, 2006 thanks for that alarm gard, have justfound the site for CPC and type in belden and it's thrown up a huge list of different cables with different cores, sizes & prices!! what is the "normal" bog standard that is used please - sorry to be a pain, but if it means the difference of the system working properly and not, i'd rather get the right one. you dont need bedan fir the newer rkps(thats what i was told by honeywell).it sound as though your problem is software in your new rkp...honeywell used to sell mk7 rkps with software that allowed connection of newer rkps to old p.c.b,but that was pre pd&en
cjd Posted June 2, 2006 Author Posted June 2, 2006 thanks for that bellan an Co. when I get 5mins sometime this weekend i'll give what u said about removing the other RKp's and using the newer one o a short length of cable. will let you know wht happens!! - THANKS
bellman Posted June 2, 2006 Posted June 2, 2006 Tech Talk number 28 Thanks JP, My server is offline at the moment so I don't have access to all my technical documentation. Regards Bellman Service Engineer and all round nice bloke ) The views above are mine and NOT those of my employer.
bellman Posted June 2, 2006 Posted June 2, 2006 you dont need bedan fir the newer rkps(thats what i was told by honeywell).it sound as though your problem is software in your new rkp...honeywell used to sell mk7 rkps with software that allowed connection of newer rkps to old p.c.b,but that was pre pd&en At the last honeywell training course I attended we were informed that anything up to 100m should work in normal conditions although they advised against it, but this was ONLY on the new EN panels. the classic renge MUST be wired in Belden 8723 not telephone or cat 5 or normal 8 core. Using incorrect cable will affect the following variables. (googletastic) Characteristic Impedance (Ohms): A value based on the inherent conductance, resistance, capacitance and inductance of a cable that represents the impedance of an infinitely long cable. When the cable is cut to any length and terminated with this Characteristic Impedance, measurements of the cable will be identical to values obtained from the infinite length cable. That is to say that the termination of the cable with this impedance gives the cable the appearance of being infinite length, allowing no reflections of the transmitted signal. If termination is required in a system, the termination impedance value should match the Characteristic Impedance of the cable.Shunt Capacitance (pFft): The amount of equivalent capacitive load of the cable, typically listed in a per foot basis. One of the factors limiting total cable length is the capacitive load. Systems with long lengths benefit from using low capacitance cable. Propagation velocity (% of c): The speed at which an electrical signal travels in the cable. The value given typically must be multiplied by the speed of light Service Engineer and all round nice bloke ) The views above are mine and NOT those of my employer.
cjd Posted June 4, 2006 Author Posted June 4, 2006 Hi bellman update so far.... I did what u said about taking off the other RKP and only having the new keypad installed on a less than 1mtr length of cable. The switch on the back was set to "0" and everything started up fine, i had a display with time date etc, but as soon as i tried to punch in a code, up started the "counting" *'s. I tried the keypad on the other numbers and had a small amount of success when it was set to "A", on this setting i had a display(time date etc), and it allowed me to enter a code without the counting *'s - BUT, when entering a number it wouldn't always just enter one number i.e. if i pressed 6, it wouldnt just display 1 *, but would display 2. (Hope this makes sense to you so far!!). Any ideas on what I can do next!! By the way, i've got an output programmed as a strobe which should activate when one of the fire exits in the campsite it's installed at is opened, but for some unknown reason it doesn't do it anymore - i've checked the settings and they're fine - do you think the main IC chip is on it's way out & would this be the reason for the new keypad not working???
bellman Posted June 4, 2006 Posted June 4, 2006 Hi bellman update so far.... I did what u said about taking off the other RKP and only having the new keypad installed on a less than 1mtr length of cable. The switch on the back was set to "0" and everything started up fine, i had a display with time date etc, but as soon as i tried to punch in a code, up started the "counting" *'s. I tried the keypad on the other numbers and had a small amount of success when it was set to "A", on this setting i had a display(time date etc), and it allowed me to enter a code without the counting *'s - BUT, when entering a number it wouldn't always just enter one number i.e. if i pressed 6, it wouldnt just display 1 *, but would display 2. (Hope this makes sense to you so far!!). Any ideas on what I can do next!! By the way, i've got an output programmed as a strobe which should activate when one of the fire exits in the campsite it's installed at is opened, but for some unknown reason it doesn't do it anymore - i've checked the settings and they're fine - do you think the main IC chip is on it's way out & would this be the reason for the new keypad not working??? Ok, In that case, go to maplins and buy a 4k7 resistor, Connect it between 0v and A on the Keypad connector. If that dosn't fix it come back and seek further guidence. The Galaxy is a very reliable panel when installed correctly but suffers from a myriad of problems when badly installed, usually caused by incorrect earthing. and no lol, I don't think the ic is on it's way out, your keypad problems are caused by bad comms, we just need to pull it to 0V to fix it. Regards Bellman Service Engineer and all round nice bloke ) The views above are mine and NOT those of my employer.
cjd Posted June 4, 2006 Author Posted June 4, 2006 thanks bellman, will go to maplins and get this sorted!! not sure if i've got the keypads connected properly now you've said that about 0volts!! I've got the keypads connected to the + & - terminal blocks on the PSU board is that correct? there is a 0volt connector on the main PCB, so if this is what its for then i'd better move the wire ASAP. the reason it's connect to the - on the PSU is because when I got the system there was a wire labelled keypad on this terminal. If it's OK where it is then great, if not i'll sort it. I don't want to go blowing any circuitry! I dont want to give the impression that i'm dull, but am just a stickler for trying to get things right. THANKS FOR YOUR HELP.
bellman Posted June 4, 2006 Posted June 4, 2006 They are both the same. terminal, "-" or 0volts it doesn't matter which one you connect it to. It'll be fine where it is... Regards Bellman Service Engineer and all round nice bloke ) The views above are mine and NOT those of my employer.
cjd Posted June 4, 2006 Author Posted June 4, 2006 glad to hear it - at least that's one thing i did right!! - just read the post above ur last one - is this right??
bellman Posted June 4, 2006 Posted June 4, 2006 technically yes, out of the box they don't work. They need modding to function, it dosn't always work because of length of data runs but usually it does. Service Engineer and all round nice bloke ) The views above are mine and NOT those of my employer.
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