Rinehart Motion

Using a Rinehart Motion PM100 AC motor driver (inverter) with an Lithiumate BMS.

A contactor and oprecharge are not required when using a PM100 motor driver, as they are included in the motor driver.

A load current sensor is required when using a PM100 motor driver.

PM100 motor drivers are sold pre-configured for wire control ("VSM"), though they can be configured for CAN control.

Wire controlled

If configured for wire control, the PM100 can be used as any other analog motor driver:

• Gradual drive reduction can be done by driving the throttle pot from the BMS' DCL output
• Step reduction can be done by driving the PM100's "Power Saver" input with the BMS' LLIM output
• The PM100 can be shut down at the end of charge by driving its "Drive Disable" input with the BMS' LLIM output
• The PM100 can be prevented from overcharging the battery by driving its "Regen Disable" input with the BMS' HLIM output

Interfacing the Rinehart Motion PM100 motor driver and the Elithion BMS using wire control.

CAN controlled

If configured for CAN bus control, the PM100 motor driver requires a VCU (Vehicle Control Unit) to translate between the various signals on the CAN bus (BMS, throttle, etc.) and what the PM100 expects. The design of the PM100 motor driver is such that it is not possible to use it without a VCU. This is a limitation of the PM100 motor driver, not of the Lithiumate Pro BMS.

In particular, there are at least two reasons why a VCU is required:

• The PM100 expects a value for maximum torque at the motor output (0x0C0 - Command Message); so a VCU is required to calculate torque from battery current and other data
• The throttle puts out a value based on pedal position, but the PM100 expects a value for requested speed, which is not proportional to throttle position; so a VCU is required to calculate a requested speed (and max torque) mased on throttle pedal position and other factors

Interfacing the Rinehart Motion PM100 motor driver and the Elithion BMS using CAN control.