3-phase Quattro 48/8000 does not engage ac-1-in as "generator"

Q&A and troubleshooting
, , ,
1

Hi,

I’m setting up a 3-phase system with 3x Quattro 48/8000 and pylontech batteries with MPPT’s only.
I’ve setup the CCGX so that the relay is used for generator start/stop. The CCGX relay then activates another relay that supplies each Quattro with 1-phase on AC-1-IN.
But …
When the CCGX activates the relay (based on SOC), the 230V appears on the VE-bus of each Quattro but these don’t start charging the batteries.

It worked for about a month or so without any problems but now all of a sudden it doesn’t anymore. I’ve reset the complete system blank as a 3-phase system but it just doesn’t work.

Then used assistants, identical in all 3 Quattro’s

  • generator general flag to ignore AC-IN
  • generator start/stop
    => use general flag
    => open relay to start
    => start when SOC < 10%
    => stop when SOC > 20%
    => generator not stopped by AC-IN

This does not work to start charging batteries either.

Anyone any idea what is happening or what could cause this problem?

Thks,
Jean-Paul

2

Would the batteries be charged if you started it manually … regardless of whether you use the assistant or not.
Do the Quattros accept the generator?

3

ONE phase for all three quattros ?

4

No, each quattro different phase.

5

Whatever % the batteries are on … it never starts charging.
There is no generator connected. I use the grid as a “generator”. When I activate the “generator” on the CCGX, the grid voltage appears on the AC-IN of all Quattros (VE bus indicates 230 Volt, 50 Hz) but the Quattro doesn’t start charging.

6

Was the original system setup in this “phase following” , or are two phases switched ?

7

The system is setup as:

Phase 1 of the grid to AC-IN of Quattro 1
Phase 2 of the grid to AC-IN of Quattro 2
Phase 3 of the grid to AC-IN of Quattro 3

It worked fine (through the CCGX) until a few days ago, nothing has changed but it suddenly doesn’t want to start charging anymore.

With the use of assistants it has never worked !!!

8

try turning the AC input current down a bit. We have a 3 phase system that won’t connect when that number is too high. It’ll connect at 40a and then let you ramp up the AC in current but it won’t let us start out at a higher amperage.

9

What firmware version are you running ?

10

The AC input current is limited to 16A is more is required is goes into passthrough and follows consumption request.

11

All Quattros are tunning 552

1 Like
12

If the Multi’s are not ignoring the AC In for some reason (an assistant somewhere, grid values outside of spec, …), the other option I can think of is phase rotation.