Is there a way to get the functionality to automatically turn the output off if the load gets disconnected (no current draw), I feel like I had that at one point but I can't get it messing with any settings
Yes, battery mode! You can think of the middle (green) terminal, as more or less the same as the red terminal but with a hefty relay in between. [If you look at components on the back of a RD60xx, the big, light blue one is that relay.] Even when the relay is NC, the voltage is still monitored on the green terminal. In the battery settings, there is a bunch of cutoff criteria which if tripped turns off the relay and the on/off button will have its illumination extinguished. One of those cutoff criteria is current which is tripped when the current drawn by the load (usually a battery) drops below that figure.
The trick one needs to solve is providing a voltage between black and green terminals when the RD60xx's on/off button is _not_ illuminated. Without that voltage the PS won't enter battery mode. The RD60xx_s are in battery mode when they show a battery symbol in middle of the last row on the display.
I'll try this and report if it does _not_ work. A single pole three position switch with the common connected to an electrolytic capacitor. The first position goes to the red terminal on the RD60xx; the middle position is not connected, the third position is connected to the green (battery) terminal. The negative of that capacitor connected to the black terminal. Then a simple on/off switch from the common of the three position switch, the other side of that switch to your load. Start with the three position switch selecting the first position (i.e. red terminal) and the simple on/off switch off (open). Adjust the voltage and maximum current on the RD60xx. Press the RD60xx on/off button and it should illuminate and the capacitor should charge. Move the three way switch to the middle position (i.e. no connection) then press the RD60xx ON/OFF button to turn off the power. Now move the three position switch to the third position and the RD60xx should enter battery mode. Not sure if you could have set the cutoff settings before this point, but you should be able to now. Press the RD60xx on/off button again (still in battery mode). Now switch the simple on/off switch to on, thereby connecting your load.
Normal warnings apply, for example that charged capacitor can be dangerous, etc
Unisoft probably knows a better way that my hack above. Could the firmware be changed to be able to use battery mode without a battery? Basically a PS with multiple criteria for turning itself off, using that relay.