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====== 3420 Build Instructions ======
<note warning>The 3420  PCB assembly contains components that are sensitive to electrostatic discharge (ESD) – please make sure you are wearing your wrist strap when handling. </note> 

===== 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

{{:internal:proddocs:cubeprogrammer.png?800|}}

=== Step 3 ===
Connect the 3420 PCB to the NMEA cable. Ensure power is on (12V)

{{:internal:proddocs:nmea.jpg?800|}}

=== Step 4 ===
Connect the ST Tag to CONN2 on the 3420 PCB.

{{:internal:proddocs:conn2.jpg?800|}}

=== Step 5 ===
On the STM32CubeProgrammer select the green 'Connect' Button in the top right corner.

=== Step 6 ===
Select the Programming Tab on the STM32CubeProgrammer

{{:internal:proddocs:inkedcube_programmer_prog_tab.jpg?800|}}

=== 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

{{:internal:proddocs:bootloader_3420.png?800|}}

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'

{{:internal:proddocs:3420_bootloader_monex.png?800|}}

=== Step 10 ===
Go to the AC Monitor tab on Monex and press the 'Reprogram' button.

{{:internal:proddocs:3420_reprogram.png?800|}}

=== 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 =====

<adm warning>DUE TO ELECTRIC SHOCK HAZARD, TESTING WILL BE DONE BY ENGINEERING TEAM.</adm>

<note warning> The 3420  Testing process involves HIGH VOLTAGE, Make sure to disconnect power when handling connections, and stay away from PCB, Variac and Test Box when power is turned on! </note> 

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:

{{:internal:proddocs:ac_monitor_test_box.jpg?800|}}

{{:internal:proddocs:deutsch_connector.jpg?800|}}

=== 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.

{{:internal:proddocs:ac_neutral_connection.jpg?800|}}

=== 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.

{{:internal:proddocs:ac_live_connection.jpg?800|}}

=== Step 4 ===
The Black Current transformer output wire on the test box must be connected to the 3 black wires using crocodile clips.

{{:internal:proddocs:ac_transformer_negative.jpg?800|}}

**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.

{{:internal:proddocs:ac_transformer_positive.jpg?800|}}

**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.

{{:internal:proddocs:electric_tape.jpg?800|}}

=== Step 7 ===
Connect the Variac to a plug socket and connect another plug to the Transformer output.

{{:internal:proddocs:variac.jpg?300|}}

** 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.

{{:internal:proddocs:push_deutsch_connector.jpg?800|}}

=== 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!**

{{:internal:proddocs:0v_variac.jpg?800|}}

=== 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:

{{:internal:proddocs:ac_monitor_tab_monex.png?500|}}

=== Step 13 ===
On the AC Monitor Tab:

Change Set Parameter to 'Circuit Type'

Change Circuit Type to 'Three Phase'

{{:internal:proddocs:change_phase.png?300|}}

Click 'Send'

All Phases should stop being unavailable and say '0', the frequency should say 49.9.

{{:internal:proddocs:three_phase_ac_monitor.png?300|}}

=== 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.

{{:internal:proddocs:25v_variac.jpg?300|}}

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

{{:internal:proddocs:125v_variac.jpg?300|}}

**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 767W

=== Step 16 ===
Turn the Variac Dial to 250V

{{:internal:proddocs:250v_variac.jpg?300|}}

**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.


 --- //[[chrissy@osukl.com|Christine Walsh]] 17/01/2022 08:57// updated