GE EX2100 用户手册
EX2100 User’s Guide GEH-6632
Chapter 4 Terminal Board I/O and Equipment Connections
••••
4-19
Data Highway Connections
The Data Highway integrates
several different single
control systems.
several different single
control systems.
The EX2100 exciter communicates over the same data highway as the Mark VI
turbine control and the HMI. A typical exciter connection to the redundant Unit Data
Highway (UDH) network is shown in Figure 4-12. This shows redundant control
with two ACLAs. The UDH is implemented using commercially available fast
Ethernet switches.
turbine control and the HMI. A typical exciter connection to the redundant Unit Data
Highway (UDH) network is shown in Figure 4-12. This shows redundant control
with two ACLAs. The UDH is implemented using commercially available fast
Ethernet switches.
10Base-T cabling is used for short distances between the controller and the T-switch,
and any local HMI. The 10BaseT ports in the ACLA and the T-switch are for RJ-45
connectors. The maximum distance for local traffic at 10 Mbps using unshielded
twisted pair cable is 100 m.
and any local HMI. The 10BaseT ports in the ACLA and the T-switch are for RJ-45
connectors. The maximum distance for local traffic at 10 Mbps using unshielded
twisted pair cable is 100 m.
100Base-FX fiber optics can be used for longer distance communication between the
local controllers and the central control room. The 100BaseFX ports in the T-switch
and the Ethernet switch are for SC type fiber-optic connectors. The maximum
distance at 100 Mbps using 100BaseFX fiber-optic cables is 2 km. Redundancy can
be obtained by using two T-switches with an interconnecting cable.
local controllers and the central control room. The 100BaseFX ports in the T-switch
and the Ethernet switch are for SC type fiber-optic connectors. The maximum
distance at 100 Mbps using 100BaseFX fiber-optic cables is 2 km. Redundancy can
be obtained by using two T-switches with an interconnecting cable.
Ethernet Port,
RJ-45
RJ-45
EN
E
E
T
CO
M
M
2
1
S
T
A
T
U
S
ACLA
H1A
g
GE Industrial
Systems
EN
E
E
T
CO
M
M
2
1
S
T
A
T
U
S
ACLA
H1A
g
GE Industrial
Systems
From other Units
From other Units
From other Controllers
From other Controllers
T-Switch B
T-Switch A
100Base-FX
connections
connections
Local Control Area
To local HMI
Viewer,
10Base-T
Viewer,
10Base-T
10Base-T
connections
connections
Exciter Control
Cabinet
Central Control Room
Fast
Ethernet
Switch A
Fast
Ethernet
Switch B
Figure 4-12. Unit Data Highway Connections