Lux power set up guide.

Luxpower SNA 5KW with AM-2 and with AM-5

IMPORTANT: On the inverter, setup the charge/discharge profile AND setup the allowed charging times (P1, P2 and P3). (The default settings won’t allow the inverter to charge the battery using Mains power).

STEPS TO CONNECT TO THE LUXPOWER SNA5KW:

1. Set Hubble MASTER dip to 1000 if AM-2 or AM-4. If AM-5 or
   AM-10 model set master dip to 0000.
     
2. Set Hubble Slaves to their respective addresses as per manual.
     
3. Use CAN out on MASTER to Luxpower inverter.
     
4. On the SNA, go to the MENU.
     
5. Select option 3 for Battery settings.
     
6. Select Lithium battery
     
7. Select BRAND 2 

As per the new Lux power inverters, the CAN cable’s pin lay out has changed. 

Lux power have changed the battery communication interface SNA model. This unit you get is with new interface. The new pin definition will go as follow: 

Lux power inverter pin layout

The main pins are going to be between 4 – 4, 3 – 5.

(Old Lux)

4 and 5 – BAT

3 and 5 – INV

(New Lux)

4 and 5 – BAT

4 and 5 – INV

This will apply for the AM5 as well as the AM2.

Please note that the cable that comes with the AM5 battery is a straight cable. This is the Comms Link on multiple AM5 batteries.

IT WILL NOT work as the CAN comms cable to a LuxPower.

User Manual 

If a customer/installer is installing a LuxPower they need to check the user manual that came with the inverter and make up a custom cable to link our CAN Hi to the inverter’s CAN Hi and our CAN Lo to the inverter’s CAN Lo.

The current LuxPower pinouts are given on our website (but not these are apparently changing on the LuxPower which is why the customer has to check their inverter’s user manual.).

Note, the menu system and settings are quite different from the Axpert. Please read through the two documents attached and also watch the video (https://youtu.be/GFzD18L0id4).

A point worth highlighting is that the default settings prioritize charging off solar and also allow for aggressive battery cycling (to promote solar production and self-consumption).

To allow the inverter to charge off AC (i.e. mains) the installer must:

• Set the time on the inverter correctly (setting group 1),
• Set the End of Discharge (Eod) limit appropriately (setting group 12),
  • If they are using a CAN Cable and SoC limits then 80% is a reasonable level for times of load shedding. If they have no solar, then they might as well put this at 100%.
  • If they are using voltage control then they should set this value a little bit lower than the float voltage we recommend for the battery. If they have no solar then it should be the float voltage.
• NB! Setup the allowed AC charge times (setting group 14). This concept might be unfamiliar to many installers.  The Luxpower SNA will charge off AC only during the predefined allowed charge times! And only up to the Charge SoC that one sets in this settings group.
  • To allow charging at any time of day one could use one of the following strategies:
    • Set Period 1 (P1) start to 00:00 and P1 end to 23:59. Do the same for both P2 and P3.
    • Set P1 start to 00:00 and P1 end to 06:00, P2 start to 06:00 and P2 end to 18:00, P3 start to 18:00 and P3 end to 23:59.
• Set the AC Source-Load times (settings group 13). The Luxpower SNA allows one to allocate times for when the load should be powered by mains. For a back-up system or during a bout of heavy load shedding the load should be powered by Mains whenever it is available (and not by the battery or solar). I suggest one of the following strategies:
  • Set P1 start to 00:00 and P1 end to 23:59. Do the same for both P2 and P3.
  • Set P1 start to 00:00 and P1 end to 06:00, P2 start to 06:00 and P2 end to 18:00, P3 start to 18:00 and P3 end to 23:59.

So in summary, for the LuxPower it is essential that:

• the installer (and tech support) reads through and understands the manual before trying to setup the inverter.
• the installer understands that the default settings won’t allow the inverter won’t allow the inverter to charge the battery up using Mains (AC) power,
• the installer sets up the allowed charging times (P1, P2, P3), the End of Discharge (Eod) limit, and if using CAN comms the End of Charge Limit