EVCS with Phase Switching - Always falls back to 1P when Car drops current for short time

Q&A and troubleshooting EVCS
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1

Hi,

some Cars seem to tend to drop charge current every some minutes for a very short time.

So then the following behaviour occurs:

When charging with fixed setting, indepent if 1P or 3P, everything is fine. EVCS works perfectly with using Sun Energy and controls amperage to get the best result.

But when using automatic Phase switching, this works great until car drops current:

  • It starts with 1P and goes up with current
  • Switches to 3P and charges with indreasing current
  • Until the car drops current for some seconds: This leads EVCS to switch back to 1P…
  • 1P current is then increased again, switching to 3P and so on…

Can there be a timeout set for switching back from 3P to 1P? So that EVCS ignores the short current drop of Car?

best regards,
Daniel

2

Which version of EVCS supports phase switching? I have been putting off purchasing one because I thought it does not have that feature (+RCD).

3

All Versions of EVCS, you just have to change the contactor inside. Search for it here in the Boards, there is a description.

1 Like
4

Hello @Broesel . Thanks for reporting. Noted. It will be included in the upcoming release.

1 Like
5

Hello Broesel,

Can I ask what settings you are using?

I have the problem that the EVNS is not switching back from 3P to 1P.

From 1P to 3P is working well.

My settings:

5059 op 4200

5058 op 3500

5060 op 1800

6

Hello @Sanderj. It looks like 3500 W is too small a value - the EVCS cannot reach it.
At the minimum current of 6 A, the power will be (6 × 230) × 3 = 4140 W. Therefore, 3500 W is not reachable. It should be set above 4140 W.

7

Hello @Nicolas ,

Thank you for the reply,

The problem is only with switching back to 3P supply. So the old setting on 5058 works already.

All my settings in the EVNS are 1+ higher i don’t know why. So 5058 is the address for switching to 3P.
5059 is the address for switching back to 1P.
And 5060 is the timeout for switching witch is set to 1800seconds.

I’ l try to set 5059 higher to 4300 and see if that will work.

Keep you posted.