I've got a three-phase ESS System with 3 Multiplus-II and an Octo GX as Controller. It works for two years, sometimes I had to reset the system, but what's perfect.
Last Month there was an dramatic increase of different VE.Bus Errors.
One Multi with the Octo works well, all Three Multis on the Bus leads to VE.Bus Errors after few Minutes.
I've Oszillographed Pin 4 and 5 of the VE.Bus of each Multi without any Cables attached an found big differences.
What are the Specs of the VE.Bus. I'm working since 30 Years with transmission system and I've got a Degree in Electronics, but my Dealer want's me to send him my whole equipment.
Anyone here to interprete my measurements?
perfect Rectangles look different, but especially the Signal of the third Multi is only half of the other two above.
After switching off AC and DC I measured the resitance between Pin 4 and 3 (ground) and Oin 5 and 3.
It was always 14 to 15 kiloohms, only on the third Multi with the weak signal it was pin 4 to 3 only 76 Ohms (no kilo!)
I think it is enough to give this Multi closer observation, only attaching it to the Octo works, the Errors occure lnly with more actice Devices on the Bus...