Hi, i’m new in the forum, first post, i hope i am doing things right :slight_smile: i have a full victron offgrid system and - with the help of one reddit victron user - made my first programming flow with node-red. a very simple flow to control the relay 1 of the cerbo gx (to switch on and off my …

[image] habi: after 5 secs there will be a new value forwarded by the flow and it will close the relay again, although i just opened it manually in the settings. Hello, Try to tick the checkbox only changes in the Victron input node … [image] Xavier

[image] habi: could i add something like an on/off-switch for the node-red flow, that appears in the settings or in vrm? I think you need the same feature I asked about in another post. See the answer I got there: [image] Control button on the console to be read by a Node Re…

I’d like to add that you need to get your ‘logic rules’ well defined first, regardless of the implementation. With relays being controllable from multiple sources, the key question is what ‘signal’ is ‘master’ and when. Once that is clear, you create a flow to reflect the ‘required’ relay status f…

I experience also unexpected behaviour of relais. See: [image] How to determen what controlls the relais in Cerbo Node-RED For temperature control I use Node-RED and a temperature sensor. I configure the relais to "Manual’. With the for relais dedicated Node I can contr…

How to determen what controlls the relais in Cerbo the for relais dedicated Node I can control only relais number #2. Every day there is a charge and a discharge cycle to earn on hourly electricity prices. The dayly cycle leads to fan-cooling during those times. However, in the log I see relai …

[image] Jeremy Fischer: On the Node logic, use the Relay 2 status to override the output given by the logic that controls the Relay 1 (Something as “if relay 2 is on, then turn on relay 1, and if it is off, consider the output of your logic”). In that way, you could use the remote console to tu…

Hello Jeremy, Thank you for looking at my topic and suggest a solution. I think I understand your reply. Controlling a relais with two sources always need some logic, like witch source is dominant. However, I want to fully control a relay with Node-RED. The most simple flow would be messaging a 1 …

Something to keep in mind…the GX relays are not latching relays. If there is a system reset/reboot etc. the relay will return to a default state.

Default relais status at boot must be defined. I could not find this in the documentation, but it is something easy to test and can be assumed. However, my node flow is a series of: a trigger, every 10 seconds, calculation when switch on, and the node controlling the relais. [image] Interesting i…

NodeRed: flow "overrules" remote control settings, how can i fix this?

Node-RED

Ernst (Ernst Lemm) 4 July 2025 12:34 5

I experience also unexpected behaviour of relais.

See:

Topic		Replies	Views
Cerbo switch to override flow? Node-RED node-red , cerbo_gx	2	137	24 September 2025
Activate Node Red flow Manualy Node-RED multiplus , vrm , node-red , cerbo_gx	5	334	25 June 2025
Control relay 5 and 6 node red Node-RED beginner , raspberry_pi , node-red , victron_community	1	242	24 February 2025
How to determine what controls the relays in Cerbo Node-RED cerbo_gx	5	280	7 July 2025
Node Red: Help wanted to create flow for switching relais on Cerbo Node-RED beginner , campervan , multiplus-ii , node-red , cerbo_gx	11	457	31 March 2025

NodeRed: flow "overrules" remote control settings, how can i fix this?

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