MultiPlus 12/2000/50-50 120v Overload when connecting AC Out

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oltorres1 asked Nov 6, '21

MultiPlus 12/2000/50-50 120v Overload when connecting AC Out

HI, I installed my MultiPlus AC-in and AC-out installation instructions found on page 7 of the manual. Specifically, it states to connect AC out "From left to right: "L" (neutral), "PE" (ground) and "N" (phase). This is the opposite of the AC-in where "N" corresponds to neutral and "L" corresponsds to (phase).

My first question is, does the sequence above for AC out makes sense? Are the instructions inverting phase and neutral polarities?

Secondly, when I connect the AC-Out to load (< 100 watts, currently), I obtain an overload warning immediately, and the MultiPlus makes also a "rattling noise". So I disconnect the load rapidly. A fan also turns on momentarily.

Any suggestions to correct this issue? The battery (12 V, 206AH, 1200 Watts continuous up to 2400

Watts x 3 seconds) and AC-in seems to be working just fine. The battery changes without a glitch.

I would appreciate any help.

wiring ups

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Paul B commented · Nov 06, 2021 at 04:01 AM

The connection Board on the multi plus has the N and the L and Earth marked for AC1 In and AC1 OUT on them so I would be following those connections - for clarity please send a photo of your connections marking them on the photo L-N-E etc for both AC1i and ACout

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Modifications Space

Node Red Space

Answer 1 · 2021-11-06T04:16:14Z

oltorres1 answered · Nov 06, 2021 at 04:16 AM

IMG_6302.jpg Below is the manual instructions, and below is my setup - as is. If I follow the AC-Out Labels, the N and L seem inverted. Please, let me know your thoughts. Thanks!

img-6302.jpg (975.5 KiB)

tempimagedg7gnz.gif (3.6 MiB)

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Alexandra ♦ commented · Nov 06, 2021 at 04:37 PM

In your case ignore the manual and follow the clearly marked terminal blocks.

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Answer 2 · 2021-11-06T04:50:14Z

Paul B answered · Nov 06, 2021 at 04:50 AM

The AC out is incorrectly wired Presuming thats its american wiring and that BLACK is active/Line

The wiring must be connected as per the markings ON the connection board.

ALSO PLEASE SEND A screen shot or a picture of the manual that says that as I think it maybe a manual typing mistake

1636174151655.png (3.0 MiB)

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oltorres1 commented · Nov 06, 2021 at 02:43 PM

The manual link provided below and the booklet included (pic), both state the same message,

AC-out

The AC output cable can be connected directly to the terminal block ‘AC-out’.

From left to right: “L” (neutral), “PE” (earth) and “N” (phase)

Thank you for the answers!

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img-6302.jpg (975.5 KiB)

Answer 3 · 2021-11-06T05:18:40Z

klim8skeptic answered · Nov 06, 2021 at 05:18 AM

Always download the latest manual.

It appears a typo crept into the earlier versions.

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Answer 4 · 2021-11-07T17:47:56Z

oltorres1 answered · Nov 07, 2021 at 05:47 PM

UPDATE: I followed your recommendations to follow the terminal block nomenclature, and that fixed the issue. Now the MultiPlus is functioning according to expectations and its intended design with my system. Thank you All!

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