Safety

The safety system is meant to stop the boat in an emergency, there is an E-Stop button on the deck near the driver. Pressing this will disable the charge, discharge and peri-power paths in the battery.

Electrical Specifications

The safety output as implemented on the BMS. When the boat is on the SAFETY_n signal is low. connecting pin 1 of connector J7 to ground

The safety wire runs together with the CAN bus over same physical wire, daisy-chained on every sub-system using the 5-pins binder connectors. The safety wire is referenced to CAN ground and has an open drain output at the battery. When the safety wire is low the boat is turned on. Each subsystem should have a pull-up installed from 5v to their safety input to ensure a high level is measured when its cable is disconnected. The safety input have 6v TVS diodes installed and should not be subject to voltages over 5v5 for long amounts of time.