RFXPulse Energycounter with S0-output

[b_weijenberg]

Hi Lennart,

The Ethernet interfaces are available at the end of next week.
I guess that the site will be updated on Thursday.

Bert

[Digit]

Bert,

Thanks for the offer! Really great. I'll start testing ASAP and let you know the results. Too bad it's saturday..just can't wait..[;)]

Robert.

[Bwired]

As mentioned above in the topic, here are my first findings.
For almost 2 weeks I Tested the RFXpulse in combination with the RFXmeter. And again I'm very satisfied with this new product.
I have now running it in a test situation with a CNY70, a Photo transistor and a pulse input. Fine tuning the sensors connected to the RFXpulse is very easy and stable. Also a great benefit for me is that I now only need one 9 volt power supply for the RFXmeter, 3 RFXpulses connectors and the sensors. I Have set the RFXmeter to every 30 seconds sending wireless the data.
The CNY is useful for reading the flashing led on your energy meter, for this you need to cut the wire which is connected to the led of the CNY70, or cover the led up so it can't shine anymore. For using it on a Gas meter the led is needed so you don't need to cut any wires for this setup. The led is used for shining on the reflecting surface which is located in the middle of the digit six of the Gas meter. For the water meter I use a Pulse count.

<b>RfxMeter</b>


<b>RfxPulse</b>


<b>CNY70 Sensor</b>


<b>Complete</b>


Check out the rfxcom sensors on http://www.rfxcom.com/sensors.htm

Pieter Knuvers
www.bwired.nl Online House in the netherlands. Domotica, Home Automation.

[Digit]

Wow, it works! RFXPulse module in combination with a KWh-meter with S0-output.

With this new RFXMeter and RFXPulse modules from RFXCOM you can have your electricity usage online in a matter of minutes ! Really.
I picked up the RFXMeter this afternoon in Veenendaal, started connecting the RFXMeter after half past nine, and had pulses imstantly. This is awesome!

Here's what RFReceiver has to say:

Code: Select all

24-9-2007 21:50:35= 3000F000440008           RFXMeter addr:00F0 = ACRF-ID:240 RFXMeter: 68;  RFXPower: 0,68 kWh;  RFXPower-Module: 0,068 kWh bits=48 
24-9-2007 21:51:06= 3000F000450007           RFXMeter addr:00F0 = ACRF-ID:240 RFXMeter: 69;  RFXPower: 0,69 kWh;  RFXPower-Module: 0,069 kWh bits=48 
24-9-2007 21:51:07= 3000F000450007           RFXMeter addr:00F0 = ACRF-ID:240 RFXMeter: 69;  RFXPower: 0,69 kWh;  RFXPower-Module: 0,069 kWh bits=48 
24-9-2007 21:51:37= 3000F000450007           RFXMeter addr:00F0 = ACRF-ID:240 RFXMeter: 69;  RFXPower: 0,69 kWh;  RFXPower-Module: 0,069 kWh bits=48 
24-9-2007 21:52:07= 3000F000460006           RFXMeter addr:00F0 = ACRF-ID:240 RFXMeter: 70;  RFXPower: 0,7 kWh;  RFXPower-Module: 0,07 kWh bits=48 
24-9-2007 21:52:38= 3000F000470005           RFXMeter addr:00F0 = ACRF-ID:240 RFXMeter: 71;  RFXPower: 0,71 kWh;  RFXPower-Module: 0,071 kWh bits=48 
24-9-2007 21:53:09= 3000F000480004           RFXMeter addr:00F0 = ACRF-ID:240 RFXMeter: 72;  RFXPower: 0,72 kWh;  RFXPower-Module: 0,072 kWh bits=48 
24-9-2007 21:53:39= 3000F000490003           RFXMeter addr:00F0 = ACRF-ID:240 RFXMeter: 73;  RFXPower: 0,73 kWh;  RFXPower-Module: 0,073 kWh bits=48 
24-9-2007 21:53:40= 3000F000490003           RFXMeter addr:00F0 = ACRF-ID:240 RFXMeter: 73;  RFXPower: 0,73 kWh;  RFXPower-Module: 0,073 kWh bits=48 

Currently there's a 100W light bulb attached to the KWh-meter, so every 36 seconds should give a pulse.
Current counter values are visible on my website (Grid, column value for Description = RFXPulse Counter)

Bert, thanks for giving me the opportunity to test this and i hope others can also benefit from this information.

Regards,
Robert.

[iamjwk]

I have a RFMeter with 2 RFpulse boards. One is now counting the gas consumption and the other should count the electricity consumption. My electricity meter is 10 years old. Digital and has a yellow flashing led (once for each Watt). I cannot get the CNY70 sensor detecting this led. I increased the sensitivity, but no luck. It works with ambient light, so sensitivity must be high.

I also tried it on LEDs which are continuous on, but it does not detect them. Based on stories above I got the impression it should work.

Is i possible the CNY70 is not sensitive for certain colours or is the blink so fast that the CNY70 has not enough time to react?

Jan-Willem

[b_weijenberg]

Jan-Willem,

If you use the reflective-optical sensor with the CNY70 as optical sensor only, you must cut the transparant wire that is connected to the top-pin in the jack connector.
By this you remove the voltage from the LED in the CNY70 and only the optical sensor will be active then.
See also chapter 5 & 5.1 in http://www.rfxcom.com/documents/RFXPulse%20module.pdf

Bert

[iamjwk]

Bert,

I have done that. Also created one CNY70 with cable from scratch. Tested it with a multimeter by measuring the resistivity below a light bulb. Worked fine. Even tried it on the LEDs of my router, but no luck.

Jan-Willem

[b_weijenberg]

Does the RFXPulse count (LED blinks on the module) when you connect pin 2 and 3 of the jack connector.

If the LED on the meter is modulated you can try to set the debounce to a longer period.

The CNY sensor should also react on dark and light using a flash light for example.

[iamjwk]

I exchanged the electricity sensor plug for gasmeter plug and LED blinks. So looks like the pulse modules are working fine. Also with flash light the CNY70 works.

Can you explain "If the LED on the meter is modulated you can try to set the debounce to a longer period." in more detail?

Jan-Willem

[b_weijenberg]

In that case there must be something wrong with the CNY or the connections to it if the CNY doesn't react on the flash light!

See also chapter 6:
The debounce time is:
JP3 JP4 debounce time
closed closed 0ms (no debounce used)
open closed 10ms
closed open 30ms (default)
open open 65ms

Important: A pulse will not be seen if the high or low period of a pulse is shorter then the chosen debounce time!

[iamjwk]

Bert,

I think it must have todo something with this. I will play around further tomorrow. Thanks for your help!

Jan-Willem

[RdP]

I have the same problem. It seems that the sensor is reacting to red led's, but not to green of yellow led's. My energy meter has a green flashing light....

Thanks in advance,

RdP