Siemens SCALANCE XR-500, Руководство по эксплуатации

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Connecting
5.3 100 to 240 VAC power supply
SCALANCE XR-500
64
Operating Instructions, 05/2017, A5E03275845-11
Connect the IE switch and the PS598-1 with one cable for 24 VDC and a cable for ground.
As an alternative, you can also mount the PS598-1 on the rear of the IE switch and secure it
with screws. In this case, no extra cables are necessary. You will find detailed information in
the section "Installation (Page 37)".
Two PS598-1 per device, 1-out-of-2 redundancy
Figure 5-8 Connecting two power supply units to a SCALANCE XR552-12M. SCALANCE XR528-
6M is used analogously.
Connect the IE switch and the PS598-1 with one cable for 24 VDC and a cable for ground.
As an alternative, you can also mount the two PS598-1 power supply units on the rear of the
IE switch and secure them with screws. In this case, no extra cables are necessary. You will
find detailed information in the section "Assembling (Page 37)". It is also possible to operate
the IE switch even after the failure of one PS598-1. The IE switch detects the failure of a
power source and signals the failure. The PS598-1 units share the applied load automatically
and uniformly.
Three PS598-1 units for two devices - 2-out-of-3 redundancy
Figure 5-9 Connecting three power supply units to a SCALANCE XR552-12M. SCALANCE XR528-
6M is used analogously.