I’ve tried searching this but can’t find anyone discussing this exact problem. I’m using the Orion XS 50A b2b charger and having trouble with the engine shutdown detection.
I think I understand the values and algorithm pretty well, but basically as soon as my Orion input voltage falls below the Shutdown Voltage it immediately detects shutdown and stops charging, instead of having to stay below this value for 60s. This means the charger is constantly stop starting because of my Euro 6 smart alternator occasionally turning the alternator off and dropping the starter battery voltage.
I can’t set the shutdown voltage too low or it won’t properly detect a shutdown. Anyone else seen this or know what I can do?
Hi, Just installed a new Orion XS 12/12 50A and facing the same problem. Even if I deactivate the Input voltage lock-out feature. Did you find a solution?
If you can’t drop the input voltage low enough to consistently make the Orion charge you may need to wire H directly to D+(12V when ignition on) for a solid on/off connection. Lots of trouble with those smart alternators. Check the manual, it shows how to do this.
Thanks for the reply. You’re right. Connecting D+ would be the alternativ solution.
However basically the question is why the 60s timer for shut down (tshutdown) is not working as described in the manual. Instead charging stops immidiately when the Input voltage falls below the shut off voltage.
I wonder if i missed any detail in the manual
“…3 → 4: If VIN < Vshutdown for longer than 1min (tshutdown), “engine off” is detected and charging is disabled. If VIN > Vshutdown before tshutdown runs out, charging remains enabled.”
Reducing the input current to zero and detecting the engine as stopped are two different things. The first is the Orion trying to compensate for line loss/voltage drop across the input cables, but continuing the charge cycle. The second is the Orion stopping the charge cycle.
On the last XS install i had a resting voltage of the starter battery of 12.2V, at the end of trying around with many different settings, ive left the shutdown voltage at 12.2V. If that voltage is reached, the Orion will reduce its input current, to zero if necessary, in order to keep the input voltage at that value. Upon switching the vehicle off, this took about three minutes until the current was down to zero and the engine was then considered stopped. Further discharge of the starter battery is then prevented due to the much higher start voltage, which i ultimately left at the 14.0V preset