Vrf Network System - Fujitsu AJ 126LELDH Series Design & Technical Manual

1-2. VRF network system

¢ Definition
VRF network
VRF network means global VRF network.
Network segment (NS)
Network segment (NS) means each networks shut off by Signal amplifier.
Network segments mean divided block which has been connected with Signal amplifier within
conditions that required Signal amplifier.
When a Signal amplifier is installed, network is divided into two network segments.
Unit
Unit means that forward transmission in network segment.
Terminal resistor
Terminal resistor means resistor should set in network segment.
¢ Overview
• VRF network system should keep both of number of unit and wiring length. When system exceeds
either number of unit or wiring length, the system should be divided.
• Different VRF series may not coexist within the same network.
1
34
Signal
amplifier
63
64
Signal
amplifier
64
1-2. VRF network system
2 3
26 27 28
1 2 3 4
1 2 3 4
1 2 3 4
4 5 6
Transmission cable: within 500 m
29 30 31
62
64
62
63
5 62
- (06-4) -
25
Network
segment 1
32 33
Signal Network
64 units
amplifier segment 2
Network
64 units
segment 3
Network
63
64 units
segment 4
1. System design