Redundant power supply to DI880, when using with TU830
Is it possible to connect redundant power supply to DI880,when using DI880 with TU830 because there is no internal connection of L2+ terminal of TU830 with DI880. See attachment,
Also similar case for AI880 with TU834, see attachment
Redundant power supply is normally done via 2 power supply units and voter - ABB product portfolio. Variantly you can use 3rd party power supply units and diode block (e.g. from Phoenix).
With this solution there is always only one power supply source for modules (from voter / diode block), which is possible customize - additional fused circuits / branches for group of I/O modules and so on (flexible according your design).