NEC SV8500 Operation And Maintenance Manual - page 665
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CHAPTER 5
Operation Procedure for System with PIR
Unit structure of PIR is as shown below. Note that the following shows a DC type as an example.
Figure 5-9 Unit Data (1-IMG)
Figure 5-10 Unit Data (4-IMG)
U=0
U=1
FANU
PIR2
PIR1
PIR0
SV8500 Server
U=2
U=3
U=0
U=1
U=2
U=3
PIR3
U=2
U=3
TSWR
FANU
U=0
U=1
FANU
U=0
U=1
U=2
U=3
U=2
U=3
U=0
U=1
FANU
U=0
U=1
U=2
U=3
U=2
U=3
U=0
U=1
FANU
U=0
U=1
U=2
U=3
U=2
U=3
U=0
U=1
FANU
U=0
U=1
U=2
U=3