Tesla Model 3 Drive Unit PCB Parameters - Revision history

Davefiddes: /* Parameter Reference */ More sensible limits for oil temp

2025-12-13T18:18:49Z

Parameter Reference: More sensible limits for oil temp

← Older revision		Revision as of 18:18, 13 December 2025
Line 43:		Line 43:
	\|°C		\|°C
	\|70		\|70
	\|~~300~~		\|100
	\|~~300~~		\|100
	\|Maximum permitted temperature for the oil. As the oil temperature gets within 10°C of the maximum the throttle will be limited to be 10% per °C. For example at 9°C below the limit the throttle cannot exceed 90%.		\|Maximum permitted temperature for the oil. As the oil temperature gets within 10°C of the maximum the throttle will be limited to be 10% per °C. For example at 9°C below the limit the throttle cannot exceed 90%.
	\|-		\|-
Line 50:		Line 50:
	\|°C		\|°C
	\|10		\|10
	\|~~300~~		\|100
	\|45		\|45
	\|The upper temperature bound for the oil speed control. If the temperature exceeds this the pump will operate at full speed (255).		\|The upper temperature bound for the oil speed control. If the temperature exceeds this the pump will operate at full speed (255).
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	\|°C		\|°C
	\|10		\|10
	\|~~300~~		\|100
	\|25		\|25
	\|The lower temperature bound for the oil speed control. If the temperature exceeds this the pump speed will vary linearly between pumpspeed or pumpspeedidle and the maximum possible speed.		\|The lower temperature bound for the oil speed control. If the temperature exceeds this the pump speed will vary linearly between pumpspeed or pumpspeedidle and the maximum possible speed.

Davefiddes: Document new spot values and tidy up a bit

2025-12-13T17:58:58Z

Document new spot values and tidy up a bit

@@ Line 2: / Line 2: @@
 == Parameter Reference ==
 {| class="wikitable"
@@ Line 72: / Line 74: @@
 |17
 |The minimum speed (0-255) of the oil pump when the inverter is idle. The speed can be higher at elevated temperatures to pull heat out of the motor after the vehicle has come to a stop.
 |}

Davefiddes: Document the new parameters

2025-12-13T17:48:02Z

Document the new parameters

New page

The [[https://github.com/davefiddes/stm32-sine stm32-sine M3_DU]] firmware has additional parameters over the regular stm32-sine [[Parameters]].

== Parameter Reference ==

{| class="wikitable"
|'''Name'''
|'''Unit'''
|'''Min'''
|'''Max'''
|'''Default'''
|'''Description'''
|-
| colspan="6" |'''Motor'''
|-
|encmode
|
|0
|6
|0
|6=High frequency 8.8kHz resolver exciter to support the Tesla M3 resolver
|-
|snsm
|
|12
|24
|12
|Motor temperature sensor. 24=TeslaM3. Note: Some drive units are not fitted with a sensor but this should still be selected to ensure correct operation of the inverter firmware.
|-
| colspan="6" |'''Inverter'''
|-
|snshs
|
|0
|8
|0
|Heatsink temperature sensor. 12=TeslaM3
|-
| colspan="6" |'''Oil Pump'''
|-
|tmpoilmax
|°C
|70
|300
|300
|Maximum permitted temperature for the oil. As the oil temperature gets within 10°C of the maximum the throttle will be limited to be 10% per °C. For example at 9°C below the limit the throttle cannot exceed 90%.
|-
|tmpoilhigh
|°C
|10
|300
|45
|The upper temperature bound for the oil speed control. If the temperature exceeds this the pump will operate at full speed (255).
|-
|tmpoillow
|°C
|10
|300
|25
|The lower temperature bound for the oil speed control. If the temperature exceeds this the pump speed will vary linearly between pumpspeed or pumpspeedidle and the maximum possible speed.
|-
|pumpspeed
|dig
|0
|255
|70
|The minimum speed (0-255) of the oil pump when the inverter is in run mode. The speed can be higher at elevated temperatures.
|-
|pumpspeedidle
|dig
|0
|255
|17
|The minimum speed (0-255) of the oil pump when the inverter is idle. The speed can be higher at elevated temperatures to pull heat out of the motor after the vehicle has come to a stop.
|}