Need Help with FGBS-222 Module and Anemometer Connection

[gcosta56 0]

Hello Fibaro Community,

 

I'm working on a project involving the Fibaro FGBS-222 module and an analog anemometer that operates on a 12V supply and delivers a 0-5V signal.

I'm facing an issue that I hope someone here can help me with.

 

Setup:

• The anemometer has 4 wires: brown (Vcc), black (0V), blue (Signal+), and green (Signal-).
• The brown wire is connected to the +12V controller, and the black wire is connected to the -12V controller.
• The blue wire (Signal+) is connected to the IN1 pin on the Fibaro module.
• The green wire (Signal-) is connected to the -12V controller.

 

Problem:
When the anemometer is not turning, it delivers a voltage of 8 mV.

However, when I connect the blue wire to the IN1 pin on the Fibaro module, the voltage reading jumps to around 0.14 V.

This discrepancy is causing issues in my system.

I've tried various configurations and settings, including adjusting parameter 20 on the Fibaro module, but I haven't been able to resolve the issue.

 

Questions:

• Is there a specific configuration or setting on the Fibaro module that I need to adjust to get accurate readings from the anemometer?
• Could this issue be related to the internal pull-up resistor or impedance matching? If so, how can I correct it?
• Has anyone else experienced a similar issue, and if so, how did you resolve it?

 

Any insights, suggestions, or guidance would be greatly appreciated. I'm happy to provide additional details if needed.

 

Thank you in advance for your help!

 

Guillaume

[RH_Dreambox 179]

@gcosta56

Have you configured parameter 20 to the value 5 ?
A value of 5 means that you are using the SmartImplant's internal pull-up resistor which pulls the creep voltage down to zero.