How do the H and L terminals of the Orion-Tr Smart DC-DC Charger interact with each other?

DIY
,
1

How do the H and L terminals of the Orion-Tr Smart DC-DC Charger interact with each other? I read the manual and have the impression that some of the information are seemingly contradictory or maybe incomplete.

  1. The manual, sec. 4.7 “Remote On/Off” states that the charger can be switched on, when the H terminal is pulled up above 3V, and switched on, too, when the L terminal is pulled down below 5V.
  2. The manual, sec. 4.8 “Engine shutdown detection override” states that engine shutdown detection is overridden, when the L terminal is pulled up above 7V.

This confuses me. In my words, overriding the shutdown detection means to keep the charger on. Hence, in other words, item 2 says the charger remains on when L is pulled up, and item 1 says the charger is turned on when L is pulled down. How can both be correct?

For other Victron products, pulling down the L terminal actually means to switch the product off. (For example see the Phoenix Smart IP43 Manual, sec. 5.2.2 Remote On/Off). This makes me wonder whether item 1 above might be wrong and the statement should read the charger is switched off, when the L terminal is pulled down below 5V. This would make more sense for me.

Some other question related to this topic:

  1. Assuming 1 and 2 above are both correct and both terminals allow to switch the charger on, is there any option to forcefully shut if off remotely, even if the charger detects a running engine?
  2. What happens if both terminals L and H are connected? Which one takes precedence?
Same VE.Smart Network and/or Cerbo GX for a two-battery setup?
Wohnmobil IP22 und Ladebooster
2

Connecting >3V to H or pulling L to GND will put the Orion in “standby mode” and it is waiting that the input voltage meets the configured voltage in the “input voltage lock-out” AND “Engine shutdown detection”.

Connecting >3V to H AND >7V to L will override (ignore) the “Engine shutdown detection” and the Orion will only work with the “input voltage lock-out” setting.