I want to protect my dc motor controller from voltage spikes due regenerative braking. Battery is 48v (54.6v at full charge) li-ion chemistry 100A peak, with "cutt-off protection BMS" from overcharging.
- 48v/15Ah Battery
- 200A contactor with 470ohm 10W precharge resistor
- 120A/60V Roboclaw controller
- 48V DC motor.
I also need bypass diode in parallel on positive wire between battery and contactor. I was looking for 1N5400 series diodes, and I'm in doubt. Should I go with 1N5400 or 1N5408 diode? Or something different? Do I need one diode on the contactor also?
This is wiring diagram, bypass diode is labeled D1, F1 is fuse, R1 is precharge resistor on the contactor.