Question:I have purchased the UR20-AUX-VSYS auxiliary module from Weidmüller to make my IO3000 station hot-swappable. Are there any boundary conditions that I need to observe?
Answer:
The auxiliary module UR20-AUX-VSYS bridges the 5 V system voltage to the contact for supplying the output signals.
Therefore, it can be used in an IO3000 station to prevent active outputs from dropping out when a module is pulled out or plugged in (hot swap).
If the IO3000 station contains a safety segment with safe power-feed modules w590-C-PF-00x, the auxiliary module may only be placed outside this safety segment, otherwise the fail-safe insulation cannot be ensured.
Place the auxiliary module either in front of the safety segment or place it behind a regular power refresh w510-C-PF-002 module.
