38 | Installing Backup Power
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Figure 5-15. DC-DC Cable for S50N
Follow the steps below to connect the switch to the PSU:
Step Task
1 With the switch unplugged from AC power, connect the DC-DC plug to the switch. Connect the individual leads
of the DC-to-DC cable to the DC terminal lugs of the S50N switch (
Figure 5-16
) using a #2 Phillips screwdriver.
Connect the gray wire to FG (field ground), red to RTN, brown to -48V:
Figure 5-16. DC Terminals of the S50N Connected to the PSU Cable
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