openinverter.org wiki - User contributions [en]

Tesla Model S/X Small Drive Unit ("SDU")

2021-05-15T22:57:35Z

Luisrayas3: Add link to Tesla Setup FAQ

The Tesla SDU is used on Model S/X in both rear and front depending on the model.

[[Front SDU Connectors]]

[https://openinverter.org/shop/index.php?route=product/product&product_id=62 Purchase in openinverter shop]

[https://openinverter.org/parameters/view.html?id=15 Parameters]

[[Setup FAQ]]

== Drop-in control board ==
[[File:Tesla SDU controller connections.png|thumb|Tesla SDU drop-in board]]

This board replaces the original board that comes with the OEM Tesla drive train. As opposed to the latter this board lets you use the drive train in the first place and allows you to fine-tune driving behaviour with the usual set of openinverter parameters. It does not restrict you in power output or regen input.

You can fully control the board via CAN or via a set of digital and analog inputs.

[https://github.com/damienmaguire/Tesla-Front-Drive-Unit/blob/master/SDU_Wiring_Connections.pdf Wiring connections]

[https://github.com/damienmaguire/Tesla-Front-Drive-Unit/blob/master/FDU_Main_conn_pinout_V1.ods Pinout]

===== Application Info =====
The board comes programmed with a recent software version. Please check [https://github.com/jsphuebner/stm32-sine/releases github] for recent software releases. In addition the board comes with a set of parameters appropriate to run the Tesla SDU. So it will work out of the box. Parameters that must not be changed are hidden to eliminate sources of error.

You will need to solder the supplied connectors and the current sensors embedded into the inverter assembly to the board, see [https://youtu.be/VVSRzmP-fRw this video].

To test run your drive unit, supply the board with 12V and GND on Conn6.13 and Conn6.19, respectively. Also supply 12V to Conn6.5 to select forward direction.

Supply inverter with some high voltage. For first tests it is recommended to put a large resistor/heating element/kettle in series.

You can start in manual mode using the button on the web interface and enter like 1Hz for „Fslipspnt“ and some value between 10-50 for „ampnom“ to see if the motor spins up. Be careful because manual mode does not enforce a motor speed limit!

You may also set parameter „udcsw“ and „udcmin“ to 0 and start drive mode by pulsing 12V on Conn6.9. Then connect a pot between Conn6.4, Conn6.7 and Conn6.8 (wiper). This will also spin the motor AND enforce a speed limit.

Tesla Model S/X Large Drive Unit ("LDU")

2021-05-15T22:56:13Z

Luisrayas3: Add link to Tesla Setup FAQ

The Tesla Model S/X Large Rear Drive Unit...

[[LDU Connectors]]

[https://openinverter.org/shop/index.php?route=product/product&product_id=64 Purchase in openinverter shop]

[https://openinverter.org/parameters/view.html?id=16 Parameters]

[[Setup FAQ]]

=== Ampseal Connector Mapping ===
[[File:LDU connection diagram.png|thumb|489x489px|LDU connection diagram]]
[[File:HV wiring.jpg|thumb|487x487px|HV wiring with precharge and main contactors]]
{| class="wikitable"
|'''PIN NUMBER'''
|'''OEM'''
|'''OPEN SOURCE'''
|-
|'''1'''
|IGN +12V
|IGN +12V
|-
|'''2'''
|BRAKE ON N.O.
|BRAKE ON
|-
|'''3'''
|BRAKE OFF N.C.
|PRECHARGE RELAY
|-
|'''4'''
|CAN HIGH
|CAN HIGH
|-
|'''5'''
|CAN LOW
|CAN LOW
|-
|'''6'''
|CHG PROXIMITY
|MAIN CONTACTOR
|-
|'''7'''
|HVIL IN
|FORWARD
|-
|'''8'''
|HVIL OUT
|REVERSE
|-
|'''9'''
|ENC +5V
|ENC +5V
|-
|'''10'''
|ENC A
|ENC A
|-
|'''11'''
|GND
|GND
|-
|'''12'''
|ACCEL 1 +5V
|ACCEL 5V
|-
|'''13'''
|ACCEL 1
|ACCEL INPUT
|-
|'''14'''
|ACCEL 2
|BRAKE TRANSDUCER
|-
|'''15'''
|ACCEL 1 GND
|ACCEL GND
|-
|'''16'''
|ENC B
|ENC B
|-
|'''17'''
|ENC GND
|ENC GND
|-
|'''18'''
|ENC SHIELD
|ENC SHIELD
|-
|'''19'''
|CAN HIGH OUT
|
|-
|'''20'''
|CAN LOW OUT
|
|-
|'''21'''
|ACCEL 2 +5V
|CRUISE IN
|-
|'''22'''
|ACCEL 2 GND
|GND
|-
|'''23'''
|12V ALWAYS T30
|START
|}

=== '''Tesla large drive unit logic board''' ===
This board replaces the original board that comes with the OEM Tesla drive train. As opposed to the latter this board lets you use the drive train in the first place and allows you to fine-tune driving behaviour with the usual set of openinverter parameters. It does not restrict you in power output or regen input.

You can fully control the board via CAN or via a set of digital and analog inputs.

=== Application Info ===
If you buy the board from the openinverter shop it comes programmed with a recent software version. Please check [https://github.com/jsphuebner/stm32-sine/releases github] for recent software releases. In addition the board comes with a set of parameters appropriate to run the Tesla LDU. So it will work out of the box. Parameters that must not be changed are hidden to eliminate sources of error.

You will need to solder the supplied connectors to the board. The drive unit connectors will plug right in.

To test run your drive unit, supply the board with 12V and GND on the Ampseal connector. Also supply 12V „Forward“ to select forward direction.

Supply inverter with some high voltage. For first tests it is recommended to put a large resistor/heating element/kettle in series.

You can start in manual mode using the button on the web interface and enter like 1Hz for „Fslipspnt“ and some value between 10-50 for „ampnom“ to see if the motor spins up. Be careful because manual mode does not enforce a motor speed limit!

You may also set parameter „udcsw“ and „udcmin“ to 0 and start drive mode by pulsing 12V on „Start“. Then connect a pot between 5V, GND and „Pot“ (wiper). This will also spin the motor AND enforce a speed limit.

=== Other considerations ===
The motor itself seems to run as well in the reverse direction as in the forward direction. However if you are running the gearbox integrated with the drive unit in reverse you will want to replace the gearbox's oil pump with a reverse oil pump. These can be found on ZeroEV.

Tesla Model S/X Large Drive Unit ("LDU")

2021-04-28T05:19:35Z

Luisrayas3: Added a note regarding running the Tesla LDU in reverse

The Tesla Model S/X Large Rear Drive Unit...

[[LDU Connectors]]

[https://openinverter.org/shop/index.php?route=product/product&product_id=64 Purchase in openinverter shop]

[https://openinverter.org/parameters/view.html?id=16 Parameters]

=== Ampseal Connector Mapping ===
[[File:LDU connection diagram.png|thumb|489x489px|LDU connection diagram]]
[[File:HV wiring.jpg|thumb|487x487px|HV wiring with precharge and main contactors]]
{| class="wikitable"
|'''PIN NUMBER'''
|'''OEM'''
|'''OPEN SOURCE'''
|-
|'''1'''
|IGN +12V
|IGN +12V
|-
|'''2'''
|BRAKE ON N.O.
|BRAKE ON
|-
|'''3'''
|BRAKE OFF N.C.
|PRECHARGE RELAY
|-
|'''4'''
|CAN HIGH
|CAN HIGH
|-
|'''5'''
|CAN LOW
|CAN LOW
|-
|'''6'''
|CHG PROXIMITY
|MAIN CONTACTOR
|-
|'''7'''
|HVIL IN
|FORWARD
|-
|'''8'''
|HVIL OUT
|REVERSE
|-
|'''9'''
|ENC +5V
|ENC +5V
|-
|'''10'''
|ENC A
|ENC A
|-
|'''11'''
|GND
|GND
|-
|'''12'''
|ACCEL 1 +5V
|ACCEL 5V
|-
|'''13'''
|ACCEL 1
|ACCEL INPUT
|-
|'''14'''
|ACCEL 2
|BRAKE TRANSDUCER
|-
|'''15'''
|ACCEL 1 GND
|ACCEL GND
|-
|'''16'''
|ENC B
|ENC B
|-
|'''17'''
|ENC GND
|ENC GND
|-
|'''18'''
|ENC SHIELD
|ENC SHIELD
|-
|'''19'''
|CAN HIGH OUT
|
|-
|'''20'''
|CAN LOW OUT
|
|-
|'''21'''
|ACCEL 2 +5V
|CRUISE IN
|-
|'''22'''
|ACCEL 2 GND
|GND
|-
|'''23'''
|12V ALWAYS T30
|START
|}

=== '''Tesla large drive unit logic board''' ===
This board replaces the original board that comes with the OEM Tesla drive train. As opposed to the latter this board lets you use the drive train in the first place and allows you to fine-tune driving behaviour with the usual set of openinverter parameters. It does not restrict you in power output or regen input.

You can fully control the board via CAN or via a set of digital and analog inputs.

=== Application Info ===
If you buy the board from the openinverter shop it comes programmed with a recent software version. Please check [https://github.com/jsphuebner/stm32-sine/releases github] for recent software releases. In addition the board comes with a set of parameters appropriate to run the Tesla LDU. So it will work out of the box. Parameters that must not be changed are hidden to eliminate sources of error.

You will need to solder the supplied connectors to the board. The drive unit connectors will plug right in.

To test run your drive unit, supply the board with 12V and GND on the Ampseal connector. Also supply 12V „Forward“ to select forward direction.

Supply inverter with some high voltage. For first tests it is recommended to put a large resistor/heating element/kettle in series.

You can start in manual mode using the button on the web interface and enter like 1Hz for „Fslipspnt“ and some value between 10-50 for „ampnom“ to see if the motor spins up. Be careful because manual mode does not enforce a motor speed limit!

You may also set parameter „udcsw“ and „udcmin“ to 0 and start drive mode by pulsing 12V on „Start“. Then connect a pot between 5V, GND and „Pot“ (wiper). This will also spin the motor AND enforce a speed limit.

=== Other considerations ===
The motor itself seems to run as well in the reverse direction as in the forward direction. However if you are running the gearbox integrated with the drive unit in reverse you will want to replace the gearbox's oil pump with a reverse oil pump. These can be found on ZeroEV.