Tesla Model S/X Small Drive Unit ("SDU"): Difference between revisions
Jason arnold (talk | contribs) m (Jason arnold moved page Tesla Model S/X Small Front Drive Unit ("SDU") to Tesla Model S/X Small Drive Unit ("SDU"): updated title to not only refer to front SDU) |
Jason arnold (talk | contribs) (Added Overview, Wiring and Cooling sections. Reworked/moved existing content to better fit these categories.) |
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== Overview == | |||
Tesla uses the Small Drive Unit (SDU) in dual-motor versions of the Model S/X. The Front SDU (FDU) is found in performance and non-performance dual-motor models, while the Rear SDU (RDSU) is only found in non-performance dual motor models. | |||
== Wiring == | |||
=== Low Voltage Data Connector === | |||
==== '''Housing:''' ==== | |||
Molex MX150 33472-2002 (key “B”) | |||
==== '''Pins:''' ==== | |||
22 AWG: Molex 33012-2003 | |||
18-20 AWG: Molex 33012-2002 | |||
[ | 14-16 AWG: Molex 33012-2001 | ||
[[File:Drive Inverter Front Connector.png|none|thumb|Small Drive Unit ("SDU") Data Connector]] | |||
[ | === High Voltage Power Connectors === | ||
Although the connectors are known ([https://www.rosenberger.com/product/hpk/ Rosenberger HPK series]), they are not available through conventional vendors. | |||
== Drop-in control board == | == Drop-in control board == | ||
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You can fully control the board via CAN or via a set of digital and analog inputs. | You can fully control the board via CAN or via a set of digital and analog inputs. | ||
=== Resources === | |||
[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/SDU_Wiring_Connections.pdf Wiring connections] | ||
[https://github.com/damienmaguire/Tesla-Front-Drive-Unit/blob/master/FDU_Main_conn_pinout_V1.ods Pinout] | [https://github.com/damienmaguire/Tesla-Front-Drive-Unit/blob/master/FDU_Main_conn_pinout_V1.ods Pinout] | ||
===== Application Info | [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]] | |||
=== 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. | 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. | ||
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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. | 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. | ||
[[Category:OEM]] [[Category:Tesla]] [[Category:Motor]] [[Category:Inverter | == Cooling == | ||
=== Small Front Drive Unit (FDU) === | |||
[[File:Tesla FDU cooling.jpg|none|thumb|Tesla FDU cooling]] | |||
=== Small Rear Drive Unit (SRDU) === | |||
[[File:Tesla SRDU cooling.png|none|thumb|Tesla SRDU cooling]] | |||
[[Category:OEM]] | |||
[[Category:Tesla]] | |||
[[Category:Motor]] | |||
[[Category:Inverter]] | |||
Revision as of 22:09, 25 June 2022
Overview
Tesla uses the Small Drive Unit (SDU) in dual-motor versions of the Model S/X. The Front SDU (FDU) is found in performance and non-performance dual-motor models, while the Rear SDU (RDSU) is only found in non-performance dual motor models.
Wiring
Low Voltage Data Connector
Housing:
Molex MX150 33472-2002 (key “B”)
Pins:
22 AWG: Molex 33012-2003
18-20 AWG: Molex 33012-2002
14-16 AWG: Molex 33012-2001
High Voltage Power Connectors
Although the connectors are known (Rosenberger HPK series), they are not available through conventional vendors.
Drop-in control 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.
Resources
Application Info
The board comes programmed with a recent software version. Please check 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 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.
