Only for GRNbms_MK3_HV_STO

This diagram shows how to wire the relays with state feedback using 4 SPDT contacts per side (positive and negative). Feedback is routed through RB1–RB8 lines, each color-coded for clarity. The relays directly switch battery plus and minus without any precharge stage.

• Relay coils must operate at 12 V.
• Recommended relay type: C320K/1000
• Only handle feedback wiring with HV disconnected!
• Check wiring regularly for secure connections.

A separate 24 V STO output is available for controlling inverters or similar devices.
Refer to your inverter’s documentation for proper connection details.