This site is now in read-only archive mode. Please move all discussion, and create a new account at the new Victron Community site.
Hi, I've plugged in my Lynx Smart BMS and I'm getting no voltage between ATC/ATD and negative on Battery-in, even though in Victron Connect both signals are enabled. Any idea what could have gone wrong?
There don't seem to be any other required connections in the manual 
Hi @bezda,
the switch in VC is only intended to temporary put the device in standby.
The system will go into hibernate if the battery voltage was low for 2 hours (or disconnected physically) without being charged. This to protect the batteries against deep discharge.
The system reactivates when a charge voltage is detected (vbat+0,5V) or when the remote is switched. If you haven't connected a remote switch, then you need to disconnect and re-connect the bridge at the remote on/ff connection terminals.
I'm not sure I understand what do you mean. My batteries are fully charged and I'd expect HI signal on my ATD, which I'm not getting and my Battery Protect is off with the message "Disabled by REMOTE"
You said "I've plugged in my Lynx Smart BMS". This leads to the assumption that you have disconnected it for some reason. You did not tell us why and how you have "unplugged" the Lynx Smart BMS. If you have put it into Standby using the switch in VictronConnect, ARTC and ATD becomes low. After 2 hours the LSB will go into hibernate mode to save power. After that it is not enough to switch the BMS on with the switch in VictronConnect.
You must use the procedure explained in my other post, which is vbat +0.5V or remote on/off switch.
Even when you're batteries are fully charged, you still will need to use the remote switch or the bridge at the remote on/off connection terminal to get ATC and ATD high.
Sorry I should have said "installed", instead of "plugged". The BMS on VictronConnect is in Running mode, not in Hibernate and the BMS state is in "Allowed to Charge" and "Allowed to Discharge". My MultiPlus has successfully went thru charging cycle after installing the Lynx BMS
Ok, understood.
What is the state of the Status LED on the BMS?
ATC/ATD are potential free contacts. This means a wire from Battery positive to a fuse to the ATC contact to the H-terminal on your Battery protect. Same for ATD.
I see, the ATC/ATD on the Lynx BMS works differently from ATC/ATD on Ve.BUS BMS.
Tested that with multimeter and I now understand what I need to do.
It just seem to me that the system examples in sections 5.1.3 to 5.1.5 in https://www.victronenergy.com/upload/documents/Lynx_Smart_BMS/Lynx_Smart_BMS_Manual-en.pdf are misleading, since they don't visualise the power in.
Thanks for your help
Yes, sorry for the misunderstanding. This happens when you read too much into it and don't read the original text correctly. Glad it's working now.
