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+--- Thread: External Power (/thread-4308.html)
- Guest - 08-23-2015
I am using 3 SEM complete with 4 LEM, i plan use sensors and devices third party connected to the output about more than 20 : microwave sensor, selenoid valve, relays, IR Fence beams..
1. Its possible to power all devices connected to comfort that need external power by powering them from 12V / S12V port , isnt it ?
2. I read about this port only powering maximum 1 amp for all devices connected to controller or SEM ..This is limitation for one SEM or for all devices connected ?
- tech07 - 08-23-2015
Quote:I am using 3 SEM complete with 4 LEM, i plan use sensors and devices third party connected to the output about more than 20 : microwave sensor, selenoid valve, relays, IR Fence beams..
Quote:1. Its possible to power all devices connected to comfort that need external power by powering them from 12V / S12V port , isnt it ?Yes. Power from 12V S12V can be switched off and on by response so be careful
Quote:2. I read about this port only powering maximum 1 amp for all devices connected to controller or SEM ..This is limitation for one SEM or for all devices connected ?
Eacch comfort and SEM can supply 1 AIf you have Comfort and 5 SEM then it can supply 6 Amps
- Guest - 08-23-2015
Thanks
- Swiss-Toni - 08-29-2015
Sound like you are looking at adding a lot of 12v equipment.Why not get a seperate 12V supply and reduce the risk of drawing to much power away from comfort, here is a link that should give you an idea of what to get. http://www.ebay.co.uk/itm/9-Way-Port-10A-12V-CCTV-PSU-Power-Supply-Cabinet-Box-for-Camera-System-Kit-/111562346870?hash=item19f9a25176 Depending on your requirements you can get different panels with more or less terminals and also idfferent amp output ratings. You can also get rack mounted 12v psu (these tend to be extremeley expensive though)
- slychiu - 08-30-2015
If alarm sensors are to be powered by external 12V, these should also be battery backed up
Comfort will report power failure and low battery on its own power as well as its slaves, which is more convenient
- Swiss-Toni - 08-29-2024
Had a system crash green lights on sem and main board none of the components are lit up at all RPI GSM Ethernet. it looks as though no power is going to them at all as is the SCS swiches & RIO01
Cant figure out why it wont supply power tried addint independent power on ethernet powered up for a few seconds and shuts down
Any ideas
- slychiu - 08-29-2024
How about the leds on the main comfort? Can you check the 12V output from the 12V and COM from Comfort?
- Swiss-Toni - 08-29-2024
The green is iluminated on the main comfort will check power on the 12v com now
- Swiss-Toni - 08-29-2024
Green LED is flashing nothing on the red, the reading is .491V on the 12v/com
- slychiu - 08-29-2024
There may be overcurrent or short circuit on the 12V output supplying slaves and keypads etc This causes the voltagfe to go to the low level you measured. Remove all dvices eg UCM, Keypads etc that use 12V from Comfort, then check if the 12V recovers. You may have to wait a few minutes as the resettable fuses must cool down before the voltafg can recover