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+--- Forum: KC868-A4 (https://www.kincony.com/forum/forumdisplay.php?fid=21)
+--- Thread: input A1 4-20mA ESPHome (/showthread.php?tid=3226)
input A1 4-20mA ESPHome - kgrzesiek - 09-02-2023
Hello,
please help me to configure a 4..20mA sensor
I connected a passive 4-20mA sensor
24VDC power supply (external power source) -> sensor -> current signal from the sensor to A1 KC868-A4
AGND KC868-A4 -> GND power suppy
configuration in esphome is as in the following link
https://www.kincony.com/forum/showthread.php?tid=2068&pid=4140
sensor:
- platform: adc
pin: 34
name: "ADC-IN"
update_interval: 5s
The sensor configuration in the example above refers to: pin: 34
following page
https://devices.esphome.io/devices/KinCony-KC868-A4
says
GPIO32 analog input1
what should be the correct configuration of the 4-20mA sensor in the esphome environment ?
I get readings similar to the screen below, when I warm up the temperature sensor the voltage does not change , so this is not a scaling problem just a misreading
when I measure the current flowing between the sensor and the A1 input, its value is 16mA - the temperature range on the sensor is -50..50C - so the value of 17mA corresponds approximately to 25C
binary sensors and binary outputs work correctly under esphome (home assistant)
Where could be the problem , what should I recheck , or maybe change the configuration ?
RE: input A1 4-20mA ESPHome - admin - 09-03-2023
which sensor model you are using? if you have link, you can post at here, i can buy one sensor as same as yours, then for a testing with esphome.
RE: input A1 4-20mA ESPHome - kgrzesiek - 09-03-2023
(09-03-2023, 01:40 AM)admin Wrote: which sensor model you are using? if you have link, you can post at here, i can buy one sensor as same as yours, then for a testing with esphome.
Sensor: Belimo 22UT-14
https://www.belimo.com/pl/shop/en_GB/Czujniki/Czujniki-zewn%C4%99trzne-(powietrze)/22UT-14/p?code=22UT-14
is a standard sensor used in industrial automation
Sensor requires 24V DC power supply and returns 4-20mA signal
RE: input A1 4-20mA ESPHome - admin - 10-26-2023
- platform: adc
pin: 35
name: "A8S A3 Current"
update_interval: 5s
unit_of_measurement: mA
attenuation: 11db
filters:
- multiply: 6.66666666
- platform: adc
pin: 39
name: "A8S A4 Current"
update_interval: 5s
unit_of_measurement: mA
attenuation: 11db
filters:
- multiply: 6.66666666
this is demo code for KC868-A8S, you can replace your board's pin number. make sure it's 4-20mA input port.