Multi RS does not accept Switch position Passthrough (251) BUG?

Node-RED
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1

Hello I want to switch my multi RS automated in Passthrough mode via the Switch Position. but it only accepts On/ Charger only/Inverter Only/ Off. Passthrough is an option in VRM but not listed here and does also not accept the command

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some extra information besides this problem. Node-red Switch position is also not updated in VRM Controls tab: Mode stays frozen while system is running as shown in Node-Red

2

Out of curiosity - why do you need to use 251 option?

In my setup i simply use 3(ON) for Switch Position + 0A limit for charge current.

3

This device is installed in a mobile home. Even though it’s quieter than a MultiPlus, it still produces audible noise. When shore power (AC-in) is available and loads stay within the input current limit, passthrough is sufficient and there’s no need for the inverter/charger to run.

4

I base my experience on MultPlus II - setting switch mode to 3 (OK) via node-red with AC-Input available results in pass-through mode
You may want to check AC-Input Current limitation.

There is also possibility, that MultiRS behaves differently…

Does the sound come from inverting or charging? Maybe this is b/c charging stays always ON (charging with minimum current).

I’ve found a trick to deal with that in MultiPlus using Charge Current Control Assistant.

5

Multi rs in pass through disables charger and inverter but leaves the relay ac in ac out closed.

Something the multiplus cannot do (“yet”).

For this reason I replaced the 4k5 multiplus II with the Multi Rs. 4k5 makes a coil whine (inverter and charger) the multi rs does not have that big coil so no whine, but electric noise most of it is not within human hearing range but still makes a noise.

6

You can circumvent the checks in the official MultiRS Control Node by using the Custom Control Node. You are looking for the /Mode path in this case.

You obviously need to be aware of the risks and consequences of using the Custom Control Node, but I can tell from personal experience that you can switch your MultiRS to Passthrough mode (251) and back to ‘On’ (3) this way.

1 Like
7

Intresting can you share your code/node?

8 
[
    {
        "id": "0484958b4f0abf20",
        "type": "victron-output-custom",
        "z": "4befe69e52960696",
        "service": "com.victronenergy.acsystem/0",
        "path": "/Mode",
        "serviceObj": {
            "service": "com.victronenergy.acsystem/0",
            "name": "RS Scheifelaar (0)"
        },
        "pathObj": {
            "path": "/Mode",
            "name": "/Mode",
            "type": "number",
            "value": 3
        },
        "name": "",
        "onlyChanges": false,
        "x": 540,
        "y": 220,
        "wires": []
    },
    {
        "id": "62dc84da463d3b11",
        "type": "victron-input-custom",
        "z": "4befe69e52960696",
        "service": "com.victronenergy.acsystem/0",
        "path": "/Mode",
        "serviceObj": {
            "service": "com.victronenergy.acsystem/0",
            "name": "RS Scheifelaar (0)"
        },
        "pathObj": {
            "path": "/Mode",
            "name": "/Mode",
            "type": "number",
            "value": 3
        },
        "name": "",
        "onlyChanges": false,
        "x": 820,
        "y": 220,
        "wires": [
            []
        ]
    },
    {
        "id": "d6ab10b189dcff88",
        "type": "inject",
        "z": "4befe69e52960696",
        "name": "",
        "props": [
            {
                "p": "payload"
            },
            {
                "p": "topic",
                "vt": "str"
            }
        ],
        "repeat": "",
        "crontab": "00 16 * * *",
        "once": false,
        "onceDelay": 0.1,
        "topic": "",
        "payload": "3",
        "payloadType": "num",
        "x": 320,
        "y": 180,
        "wires": [
            [
                "0484958b4f0abf20"
            ]
        ]
    },
    {
        "id": "86bdc92a0789b6fd",
        "type": "inject",
        "z": "4befe69e52960696",
        "name": "",
        "props": [
            {
                "p": "payload"
            },
            {
                "p": "topic",
                "vt": "str"
            }
        ],
        "repeat": "",
        "crontab": "",
        "once": false,
        "onceDelay": 0.1,
        "topic": "",
        "payload": "251",
        "payloadType": "num",
        "x": 320,
        "y": 220,
        "wires": [
            [
                "0484958b4f0abf20"
            ]
        ]
    },
    {
        "id": "11f81475821ec19f",
        "type": "comment",
        "z": "4befe69e52960696",
        "name": "Passthrough",
        "info": "",
        "x": 160,
        "y": 220,
        "wires": []
    },
    {
        "id": "bacdddfe05bcbcfc",
        "type": "comment",
        "z": "4befe69e52960696",
        "name": "Mode On",
        "info": "",
        "x": 150,
        "y": 180,
        "wires": []
    },
    {
        "id": "ee3e148e2c4b6f24",
        "type": "global-config",
        "env": [],
        "modules": {
            "@victronenergy/node-red-contrib-victron": "1.6.55"
        }
    }
]