Relay wiring

[david8811]

http://www.arduinostarterskit.com/sale-7...board.html

I am trying to wire up my Comfort Output to my 4 channels Relay to switch on the light in the event of PIR is being activated. Refer to above link for details of my 10A 250V relay. How do I connect the output and 12v from Comfort panel to the relay input?

Q1 Is it correct to connect the 12V of the Output to DC+ of the relay module?
Q2 then connect the OP1 of the Ouput to IN1(Input 1 ) of the relay? And accordingly OP2 to IN2 and so on?
Q3 How about the DC- of the relay? Where to connect to or leave it unconnected?

Would appreciate your support and sharing.

[Swiss-Toni]

[slychiu]

I would guesss that you need to set low level trigger option and connect Comfort Output to the trigger inputThen connect 12V to positive wireBut that is only a guess

[david8811]

May I know why you suggested Low level trigger setting? Was it because Comfort output is designed for Low level trigger? Another way to put it. Is Comfort output Control signal is programmed/set to Low level trigger or to activated at 0 / false / ground, when an output signal is generated ( in my case ,PIR is activated)?

[slychiu]

The Comfort Output is an Open-collector transistor output. That means that when not activated the output is floating.When an Output is turned on, the Comfort Output will go to a low level, thus supplying 12V between 12V and Common. Hence it is activve low level
This is designed to drive 12V relaysIf you were using the RLY01, yiu would not have this problem. The outputs can be coonnected direct to the relay inputs pin for pin

[david8811]

Thank you for your response.
I read in another blog, the DC- terminal is supposed to be connected to the Arduino panel Ground terminal. In my case, which one is the “Ground” terminal of Comfort panel?

See the link here

https://blog.siliconstraits.vn/relay-wha...to-use-it/

[slychiu]

The Ground can be found in Comfort 12V/COM/S12V centre terminal

[david8811]

I just tested my relay by connecting the DC+ and DC- of the relay to the +ve and -ve poles of my 12V 20A 240W (18 channels) DC external power supply. Set the Relay to Low Level Trigger. Then I connected the relay output 1 to a light bulb with external 240V AC power supply. When I connected (jumped) the Relay Input 1 to DC- terminal of the Relay, the Relay activated and the light on.

Now, I intended to power up my Relay using external power supply to reduce the loads to my Comfort system power supply. To do this, I connect my Relay DC+ and DC- to the +ve and -ve poles of my 12V 20A 240W (18 channels) DC external power supply. Similarly, the Relay ouput1 to a light bulb with 240V AC power supply.

To enable Comfort system to activate the Relay and switch on the light when my PIR sensor is activated, I will connect my Relay Input 1 to my my Comfort OP1 (Output1) terminal. Leave the 12V “free” unconnected as my Relay is drawing power from the external DC supply as explained above.
Q1 . Will this configuration work? If yes, Do I have to connect my Comfort system Ground (COM) to the -ve pole of my external 12V 20A 240W (18 channels) DC external power supply to create a common ground?

PS : The 12V 20A 240W (18 channels) DC external power supply is also used to power up 8 units of my NVR cameras

[slychiu]

Yes you need to connect the ground of the power supply to the ground for Comfort (centre of 12V/COM/S12V terminal)

[david8811]

Mr Chiu,

https://www.cytech.biz/temp/appman.pdf
I am trying to set up the project : Switch on a light when movement is detected at night as per above link example 1.4. ( This example used OP5, I changed the programming from OP5 to OP3)
I tested the circuit as per your suggestion, Unfortunately it didn’t work. Then, I reconnected the Relay power supply directly to Comfort panel, which is DC+ to 12V between OP3 and OP4. The DC- to COM between S12V and 12V. With DC+ and DC- connected, the Relay green LED on indicate power on.

When I connected the Relay Input IN3 to Comfort OP3, the Relay immediately activated and the light connected to the Relay output was lighted up. The Relay activated without the PIR being activated. Furthermore, the Relay continued activated and failed to switch off despite this project Response is programmed to 5 minutes.

When I disconnected the IN3 cable from Relay to OP3, the Relay deactivated, but the Relay remained power on. When I reconnected the IN3 cable to OP3, the Relay activated again, light on and failed to switch off. Despite PIR is not even activated.
I also tested the above based on Zone type 5 and 24. Same result. Zone type 8 ( despite the example used zone type 8) cannot be used as it caused F32 to announce the zone.
Would appreciate if you could help to address my problem.