This allow ESPHome to read the ABB EV-1 kWh meters via modbus. I created an ABB2 and an ABB3 which allows users to import 1 or 2 meters.
I personally have 2 meters installed, once device ID 2 is the Misubishi Ecodan Heatpump itself and device ID 3 is the booster inside the healtpomp inside unit
See EV1_Modbus_Map_RevB.pdf for the registers
Set 0x8900 to your wanted Slave ID (f.i. 2)
Set 0x0414 to 1
I assumed the procon would be modbus address 1 and hence named the kWh meter ABB2 and ABB3.
substitutions:
abb2_device_address: 2
abb3_device_address: 3
packages:
remote_package:
url: https://github.com/jorkzijlstra/ESPHome
ref: main
refresh: 0s
files: [ esphome/labels/ABB2.yaml,
esphome/labels/ABB3.yaml
]
Now we can use these values in home assistant
template:
- sensor:
- name: deltat
state: >
{% set q = states('sensor.mitsubishi_flow_temperature') | float %}
{% set w = states('sensor.mitsubishi_return_temperature') | float %}
{% if q >= 0 and w > 0 %}
{{ (q - w) | round(2) }}
{% else %}
0
{% endif %}
unit_of_measurement: "°C"
unique_id: "DeltaT"
- sensor:
- name: realtime_afgifte
unique_id: "Realtime_Afgifte"
state: >
{% set deltat = states('sensor.deltat') | float %}
{% set flow = states('sensor.mitsubishi_flow_rate') | float %}
{% if (deltat > 0)%}
{{(deltat * 4.2 * (flow / 60)) | round(1, default=0)}}
{% else %} 0
{% endif %}
- sensor:
- name: realtime_cop
unique_id: "Realtime_COP"
state: >
{% set deltat = states('sensor.deltat') | float %}
{% set flow = states('sensor.mitsubishi_flow_rate') | float %}
{% set pump_raw = states('sensor.abb2_power_total') | float %}
{% set booster_raw = states('sensor.abb3_power_total') | float %}
{% set pump = pump_raw / 1000 | float %}
{% set booster = booster_raw / 1000 | float %}
{% if (pump_raw > 0) and (deltat > 0)%}
{{(deltat * 4.2 * (flow / 60)) / (pump + booster) | round(1, default=0)}}
{% else %} 0
{% endif %}
After which we can add something visual on a dashboard
cards:
- type: custom:mini-graph-card
entities:
- sensor.mitsubishi_outdoor_ambient_temperature
- sensor.realtime_afgifte
- sensor.realtime_cop
name: Buitentemperatuur
show:
labels: true
line_width: 0.5
hours_to_show: 24
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