BMW I3 Battery failed to precharge. Check that capacitor is seated on high voltage output.

[jakub8109]

Expected Behavior

The emulator should turn on the battery but it doesn't.

Actual Behavior

the emulator does not activate the contactors. He doesn't see the capacitor. When I disconnect the WUP cable, the contactors will close for a moment. Or maybe there is no WUP control? the diode on the relay is constantly lit. Capacitor https://www.tme.eu/pl/details/lgx2h471melc58/kondensatory-elektrolityczne-snap-in/nichicon/

Steps to Reproduce the Problem

1. 1. 1.

Settings

• Software version: 7.6.0
• Battery used: BMW I3 60AH
• Inverter communication protocol: POLYN
• Hardware used for Battery-Emulator: HW_LILYGO
• CONTACTOR_CONTROL: no
• DUAL_CAN: no
• WEBSERVER: yes
• MQTT: no

[jakub8109]

I managed to start it. sofar sees parameters from bms + battery power. after about 1-2 minutes you can hear the relays in the inverter and the CAN communication is lost. resistors at the ends, desolder from the center of the PCB. shows 60ohm. screen connected to pe

[jakub8109]

problem solved with CAN transmission - power supply must be separate from the battery and the emulator. wup still does not work - manual forcing helped by applying 12v