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serkri / SmartEVSE-3

Smart Electric Vehicle Charging Station (EVSE)
MIT License
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Slave SmartEVSe 1 won't start #204

Closed rvdgaag closed 11 months ago

rvdgaag commented 1 year ago

I installed a second SmartEVSE, loadbalancing is on on the main unit, the secundary unit is node 1. The Main unit has an EV meter which reads fine on modbus nr 11

I also configured an EV meter on node 1 (as well as the main unit) on modbus nr 16 (Eastron 3 Phase SDM630v2). The mains info is send over API to both the Master and Node1 (is this really nessesary ?)

The node 1 seems to see a car is connected but the car doesn't see it is connected obviously so it doesn't start charging.

Both SMARTEVSE's have the latest v1.7.3

Log file:

Any ideas wjat to look for ?

dingo35 commented 1 year ago

There's a lot going wrong on your modbus.

Configure Meters only on the Master, and feed only the Master with the API currents. The Slave will follow the instructions of the Master.

dingo35 commented 1 year ago

To be clear: you CAN add an extra EVMeter to node1, but is has to be an extra EVMeter on a different adress then the EVMeter on the Master.

In your log you see modbus problems on address 0x10, so there's something wrong with that config. Eastron address set at 16? Try disabling the EVMeter....

rvdgaag commented 1 year ago

Yes the Eastron for the Node 1 is set to modbus adress 16 on the Eastron.

Tomorrow I will disable it and test again but I prefer to have a separate EV meter also for the Node 1 since I need to be able to report the consumption for the business cars and private cars (I will have 3 EV's in a couple of months).

rvdgaag commented 1 year ago

Disconnected the second EV meter and let SmartEVSE 1 as Master control everything, still nothing works. Also disconnecting the SMARTEVSE 1 and setting the second unit as solitairy unit did not start charging the car, so I think the unit is not OK.

Here is the log from the MAster + Node1 situation:

Last login: Thu Sep 28 07:58:14 on console rene@JRFs-MacBook-Air ~ % telnet 192.168.1.48 Trying 192.168.1.48... telnet: connect to address 192.168.1.48: Connection refused telnet: Unable to connect to remote host rene@JRFs-MacBook-Air ~ % rene@JRFs-MacBook-Air ~ % telnet 192.168.1.48 Trying 192.168.1.48... Connected to 192.168.1.48. Escape character is '^]'. *** Remote debug - over telnet - for ESP32 - version 3.0.5

dingo35 commented 1 year ago

You might want to check your wiring, usually when a unit doesnt start charging its because CP signal to PE is incorrect. So check your ground wiring and the CP wiring. In State A there should be 12V between CP pin and PE .

rvdgaag commented 1 year ago

In state A there is 9,6V between CP and PE, also checked it in the working SmartEVSE.

Now I gave up with the open end cable, ordered a wallchassis with a box to connect a factory cable , so to be continued.

dingo35 commented 1 year ago

From tweakers.net, "zelfbouw laadpaal ervaringen":

    As long as no electric car is plugged in, DC + 12 V are simply applied to CP
    When an electric car is plugged in, a diode and a 2.7 kΩ resistor between CP and PE in the type 2 socket of the vehicle pull the + 12 V down to + 9 V.
    The charging station uses this to recognize that a vehicle is connected.
    Now it activates the 1 kHz PWM signal and uses it to signal the car with what maximum charging current it is allowed to charge.
rvdgaag commented 11 months ago

Issue can be closed now I will open another topic with new findings