Plan to attach each of the two power supplies in an enclosure to separate main power supply lines.
Figure 2 shows the rear view of a control enclosure with the power supplies (1 and 2) at either end of the enclosure:
Plan to connect the power cords of the auto-sensing power supplies on the left side of the rack (when viewed from the rear) to one power source that provides power in the range 100V - 240V ac. Plan to connect the power cords of the power supplies on the right side of the rack to another 100V - 240V ac power source. Using two power sources provides power redundancy.
The power supplies in a control enclosure are not interchangeable with the power supplies in an expansion enclosure.