Sean
Member
- Joined
- Oct 8, 2016
- Messages
- 936
As per some recent threads I'm wanting to control charge rate using an external charger over can.
This setup is nicely documented here, so I'm assuming its proven as functional by Batrium, but it's only partially functional in my test setup.
https://www.batrium.com/pages/how-to-control-a-eltek-flatpack2-with-watchmon
I've a number of the Elteks, they are all brand new, and I've no issues telling them what to do over canbus via a dongle and savvycan - so I'm sure the issues aren't external to the WM4.
Remote target setting appears to only work down to 13 amps (actual charger output) - open circuit voltage setting appears to work, within the remotes limits. But current control (using the charge target) doesn't allow below 13 amps, but limited settings do drop below 13 amps.
Chrge target limited settings do affect a reduction in current, but don't relate to the charge targets.
So, a few more questions for anyone who has knows ......
Where are the charge target comms fields getting their data from ? (I have the Eltek on the battery side of the shunt,so if the field data is coming from the shunt then that's expected).
Scaling: I've read the single line of documentation relating to this, and it makes sense -but not when current scaling is required to be set to 10 for the actual measured current to be set correctly. (the how to states 100)
Tomorrow I'll find figure out what what the WM is actually telling the Eltek, I know what it should be telling it.
A general question, is anyone using the WM4 canbus reliably ?
This setup is nicely documented here, so I'm assuming its proven as functional by Batrium, but it's only partially functional in my test setup.
https://www.batrium.com/pages/how-to-control-a-eltek-flatpack2-with-watchmon
I've a number of the Elteks, they are all brand new, and I've no issues telling them what to do over canbus via a dongle and savvycan - so I'm sure the issues aren't external to the WM4.
Remote target setting appears to only work down to 13 amps (actual charger output) - open circuit voltage setting appears to work, within the remotes limits. But current control (using the charge target) doesn't allow below 13 amps, but limited settings do drop below 13 amps.
Chrge target limited settings do affect a reduction in current, but don't relate to the charge targets.
So, a few more questions for anyone who has knows ......
Where are the charge target comms fields getting their data from ? (I have the Eltek on the battery side of the shunt,so if the field data is coming from the shunt then that's expected).
Scaling: I've read the single line of documentation relating to this, and it makes sense -but not when current scaling is required to be set to 10 for the actual measured current to be set correctly. (the how to states 100)
Tomorrow I'll find figure out what what the WM is actually telling the Eltek, I know what it should be telling it.
A general question, is anyone using the WM4 canbus reliably ?