Brackenshiel

Random or no charging when EVSE turned on

6 posts in this topic

I have a Smart 2018 ED. I have a Siemens versicharge with a timer between the panel and the EVSE. I plug my Smart in after daily use. The Timer powers up the EVSE at 7:00 pm and off at 7:00 am. However, the car does not always charge during this period. When it does, the charge start time seems random. Preset is not selected. Anyone, have this issue.

Share this post


Link to post
Share on other sites

Interesting.

 

I know there's a "handshake" process when the car is connected to the EVSE. I wonder if there's something in the EVSE's design where having it activated by an external timer prevents the "ready" signal from being sent as soon as power is applied. 

 

https://en.wikipedia.org/wiki/SAE_J1772#Signaling

Share this post


Link to post
Share on other sites

I set a preset for 5:30 am thinking it must at least pole the versicharge for available current before trying to prep the car. So far, the charging has taken place at approx 8:30 pm which is 1.5 hrs after the versicharge is powered up by the external timer. I have no idea why this sequence occurs. This is with smart charge enabled and not instantaneous. Even with the preset time, the instantaneous charging fails to charge the car. As a software eng, I would have the car do an EVSE pole on a periodic, say 30 min, basis constantly. But that's just me.

Share this post


Link to post
Share on other sites
On 6/1/2018 at 10:40 AM, Brackenshiel said:

As a software eng, I would have the car do an EVSE pole on a periodic, say 30 min, basis constantly.

 

What is an EVSE pole?

Share this post


Link to post
Share on other sites

Not that it's a solution for you but the OpenEVSE project has a built in timer so you don't have to control the power to the EVSE.   Might be an option if you want to spend a bunch of $

 

:unsure:

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now

    Chatbox
    You don't have permission to chat.
    Load More