TM4

Using a TM4 motor inverter and VMU with an Lithiumate BMS.

Connect the BMS and the TM4 VMU through the CAN bus. (This is a different bus from the bus between the VMU and the motor inverter.)

In the GUI, go to the "Configure" tab, the "Communicate" sub-tab, the "Message to devices" box, the "Motor driver" box, and select "TM4".

The TIM inverter does not need any configuration to work with the BMS.

If enabled (see above), the Lithiumate generates the following message for the TM4 series motor inverters.

Notes:

• Multi-byte values are little-endian: the MSB (Most Significant Byte) is in the higher numbered data byte (the right most byte in the following tables)
• The default bus speed is 500 kbps
• Message rate: 100 ms

ID	Bytes	Byte 0	Byte 1	Byte 2	Byte 3	Byte 4	Byte 5	Byte 6	Byte 7
521h	8				DOD (1)
					LSB	MSB

Notes:

1. Depth of Discharge, 0 to 6553.5 % [0.1 %]

ID	Bytes	Byte 0	Byte 1	Byte 2	Byte 3	Byte 4	Byte 5	Byte 6	Byte 7
522h	8	Fault/Warning flags (1)	Limp control flag (2)			Vbatt-min (3)		Idisch-min (4)
						LSB	MSB	LSB	MSB

Notes:

1. Bit 0: 1 = fault; Bit 5: 1 = warning
2. Bit 0: 1 = limp
3. Minimum battery voltage, 0 to 6.5 kV [0.1 V]
4. Maximum battery discharge current, 0 to 6.5 kA [0.1 A]

ID	Bytes	Byte 0	Byte 1	Byte 2	Byte 3	Byte 4	Byte 5	Byte 6	Byte 7
523h	8	Vbatt-max (1)		Iregen-min (2)
		LSB	MSB	LSB	MSB

Notes:

1. Maximum battery voltage, 0 to 6.5 kV [0.1 V]
2. Maximum battery charge current, 0 to 6.5 kA [0.1 A]

ID	Bytes	Byte 0	Byte 1	Byte 2	Byte 3	Byte 4	Byte 5	Byte 6	Byte 7
530h	8	Enable flags (1)	Charge status code (2)	Temperature (3)	Temperature flag (4)

Notes:

1. Bit 0: 1 = Precharge is complete. contactors are on; Bit 1: 1 = Regen is enabled
2. Bit 6,7: 00 = not charging; 01 = charging in progress; 02 = charging complete; 03 = charging fault
3. Average battery temperature, [°C + 40 °C]
4. Bit 0: 1 = Implausible battery temperature