openinverter forum

Rich Parker wrote: ↑Thu Mar 26, 2020 10:17 am Hi all,

I am a new to the forum. Thanks for the add.

Having read the closely related threads, I am starting this thread purely on the connection of Damien's board, GS450H transmission, inverter and any given car. I will be asking questions a step by step. I apologize if these have been clarified somewhere. Many thanks in advance for your input.

Now my questions are about the board connection - in particular on Plug A pinout.

The link to the pinout of Damien's board is https://github.com/damienmaguire/Lexus- ... Pinout.pdf

Plug A pinout:

1 - Oil pump temp + (does it refer to the oil pump on the side of the gearbox?)
2 - Oil pump temp - (does the gearbox oil pump has two (+,-) wires to be connected to the board?)
3 - Trans pump temp + (which pump is it?)
4 - Trans pump temp - (which pump is it?)
5 - MG1 temp + (+ wire from MG1 connected directly here?)
6 - MG1 temp - (- wire from MG1 connected directly here?)
7 - MG2 temp + (+ wire from MG2 connected directly here?)
8 - MG2 temp - (- wire from MG2 connected directly here?)
9 - Trans PB1 (what is it?)
10 - Trans PB2 (what is it?)
11 - Trans PB3 (what is it?)
12 - Trans SP (what is it?)
13 - Trans SL1- (what is it?)
14 - Trans SL2- (what is it?)
15 - Oil pump relay (low side switch) (is it a relay between the board and oil pump on the gearbox?)
16 - Oil pump PWM (does it activated when the low side switch on the relay closes?)
17 - 12V out (what is it used for?)
18 - 5V out (what is it used for?)
19 - Ground
20 - Ground

Rich Parker wrote: ↑Fri Mar 27, 2020 10:34 am Since Plug A pinouts are quite clearer to me, let's discuss on Plug B. Could anyone (slow67) answer the following questions please?

1 - 12V supply in (Is it the main power source for the brain/board? Does it work together with the ground in 20 in Plug A or the one in 20 in Plug B to close the circuit?)
2 - Brake light switch input (whenever the brake is applied, does it kill the signal to MG1 and MG2?)
3 - IN2 (General purpose 12v digital input) (What could we use it for?)
4 - IN1 (General purpose 12v digital input) (What could we use it for?)
5 - OUT1 (General purpose low side switch) (What could we use it for? Example?)
6 - Inverter Relay (low side switch) (Which plug does the output from this relay go to on the inverter/pin?)
7 - MTH- (meaning Motor-to-HVB, is it used for regen? Does it get connected to 7 in A62 connector on the inverter?)
8 - MTH+ (Does it get connected to pin 8 in A62 connector on the inverter?)
9 - HTM- (HVB-to-Motor, is it used to drive MG1 and MG2? Does it get connected to pin 26 in A62 connector on the inverter?)
10 - HTM+ (Does it get connected to pin 27 in A62 connector on the inverter?)
11 - REG- (Status request line: Does it get connected to pin 20 in A62?)
12 - REG+ (Status request line: Does it get connected to pin 29 in A62?)
13 - CLK- (SPI clock: does it go to pin 38 in A62?)
14 - CLK+ (does it go to pin 39 in A62?)
15 - 5V OUT (what could we use it for?)
16 - Throttle 2 Input (0-5v analog) (Where is it connected in A62?)
17 - Throttle 1 Input (0-5v analog) (where is it connected in A62?) (Why are there 2 throttle inputs?)
18 - CAN low
19 - CAN high
20 - Ground

Rich Parker wrote: ↑Wed Apr 08, 2020 6:17 am After this, I have verified the Damien's code "gs450h_v2.ino" and it complies just fine.

Rich Parker wrote: ↑Mon Apr 27, 2020 3:32 am 4. Has anyone tried Chinese connectors on AliExpress? A reason for asking is it is because it is a closer market to me given COVID-19. I have no idea how long it would take the board and connectors from Damien and an electronics shop in Europe/USA to come to me.