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Table of Contents
3420 Build Instructions
Programming Instructions
The process of programming the board is a two step process. First we program the bootloader onto the STM32 using the STM32CubeProgrammer. Then we program the 3420 Software using Monex.
You will need:
- Monex3.11
- STM32CubeProgrammer
- Populated 3420 PCB
- ST Link
- NMEA2000 Network
Step 1
Connect the ST Link to the USB port of your computer
Step 2
Open STM32CubeProgrammer
Step 3
Connect the 3420 PCB to the NMEA cable. Ensure power is on (12V)
Step 4
Connect the ST Tag to CONN2 on the 3420 PCB.
Step 5
On the STM32CubeProgrammer select the green 'Connect' Button in the top right corner.
Step 6
Select the Programming Tab on the STM32CubeProgrammer
Step 7
Click 'Browse' and select the bootloader BIN file from S:\Code\Production\3420 AC Monitor\STM32 Based - Rev G onwards/3420-Bootloader.bin
Click 'Start Programming'
The LED on the 3420 PCB should light a solid green.
Step 8
Open Monex, Minimum version of Monex is 3.11, If you are on a lower version you must update this from S:\Code\Published PC Programs\Monex3…..
Step 9
Press the 'Get Prod Info' it should read Model ID: 'Oceanic Bootloader 3420-L4'
Step 10
Go to the AC Monitor tab on Monex and press the 'Reprogram' button.
Step 11
Select S:/Code/Production/3420 AC Monitor/STM32 Based - Rev G onwards/3420.bin
No wait for device to finish programming. The Led should now be flashing blue
Programming Successful, you can now disconnect the ST Link
Testing Instructions
The Process of testing the 3420 involves connecting the 3420 PCB to the 3420 Test Box, and altering the voltage using a Variac. Throughout the whole process, TAKE YOUR TIME AND DO NOT HANDLE WHEN POWER IS CONNECTED TO THE TEST BOX.
You will need:
- Monex3.11
- Programmed 3420
- NMEA2000 Network
- 3420 Test Box
- Variac
- Electric Tape
- Multimeter
Step 1
Connect the 3420 Test box wires to the Deutsch connector wires as follows:
Step 2
The Black Neutral wire labelled 'N' on the test box must be connected to the Single Black wire on the Deutsch connector with the crocodile clip.
Step 3
The Red Live wire labelled 'L' on the text box must be connected to the thick Red, Pink and Purple wires on the deutsch connector using the crocodile clip.
Step 4
The Black Current transformer output wire on the test box must be connected to the 3 black wires using crocodile clips.
Now Connect the black wire from the miltimeter to the same black current transformer output wire
Step 5
The Red Current transformer output wire on the test box must be connected to the Yellow, While and Blue wires on the deutsch connector using crocodile clips.
Now Connect the Red wire from the miltimeter to the same red current transformer output wire
Step 6
Wrap Electric Tape around the crocodile clips and multimeter probes to ensure an insulated connection.
Step 7
Connect the Variac to a plug socket and connect another plug to the Transformer output.
DO NOT CONNECT THE PLUG TO THE AC TEST BOX
Step 8
Push the Deutsch Connector into the 3420 PCB until both sides of the connector click tight.
Step 9
Connect the 3420 PCB to the NMEA cable. Ensure power is on (12V)
Step 10
Connect the Variac to the 3420 Test box, Making sure the Variac is OFF
Turn the dial of the Variac to 0V, do not turn the Varic on yet!
Step 11
Make sure none of the crocodile clips are close to each other and ARE NOT TOUCHING
Step 12
On Monex click the 'Get Prod Info' Tab, in the Model ID you should read 'AC Monitor'
Now go to the AC Monitor Tab, you should see:
Step 13
On the AC Monitor Tab:
Change Set Parameter to 'Circuit Type'
Change Circuit Type to 'Three Phase'
Click 'Send'
All Phases should stop being unavailable and say '0', the frequency should say 49.9.
Step 14
MAKE SURE ALL CONNECTIONS ARE ACCURATE BEFORE TURNING POWER ON (Step 2 - Step 5 otherwise you could potentially damage the PCB)
Turn on the Variac Power, the Blue LCD display on it should state the voltage.
Turn the Dial to output 25V.
The Phase A, B ,C Line-Neutral Voltages should be approximately 31V
The Phase A, B, C Current should be approximately 1.4A
The Phase A, B, C Real Power should be approximately 44W
Step 15
Turn the Variac Dial to 125V
Keep away from the PCB, AC Test Box and PCB when power on.
The Phase A, B, C Line-Neutral Voltages should be approximately 130V
The Phase A, B, C Current should be approximately 5.9A
The Phase A, B, C Real Power should be approxmiately 567W
Step 16
Turn the Variac Dial to 250V
Keep away from the PCB, AC Test Box and PCB when power on.
The Phase A, B, C Line-Neutral Voltages should be approximately 251V
The Phase A, B, C Current should be approximately 11.4A
The Phase A, B, C Real Power should be approximately 2880
Step 17
Change the Set Parameter to: Device Instance
Change Set Dev Inst to: 1
Click 'Send'
Packaging
this will need pics and info The 3420 is always sent with a 3423, this is now being packaged together in the same box. this SOP will need updating once the 3420 has had its PCB re-designed.
— Christine Walsh 17/01/2022 08:57 updated