Parts Names And Functions - Hitachi Central Station EX Installation Manual

3.3

Parts Names and Functions

The following diagram shows Central Station EX with front and back cover removed. Each name and
function are listed.
Regarding how to connect each terminal, refer to "6.2 Wiring Work" (page 13). Regarding how to set each
switch, refer to "6.3 Switch Setting Procedures" (page 15).
SW2
LCD power
Switch
DSW3
Used to change starting
mode.
UP/RIGHT/LEFT/
SELECT/DOWN
button
Used in setting mode
Do NOT use them in
normal mode.
H-LINK Terminals
Used to connect
to H-LINK
communication bass.
External input terminals
Used to connect with
external devices.
TB4 will not be in use
on Central Station EX.
External output
terminals
Used to connect with
external devices.
8
7-segment LED
Used for setting and status
indication
Fuse for H-LINK transmission circuit
Fuse for protecting H-LINK
transmission circuit
Mark
ERROR Lights upon system error occurrence (red)
RS-485 RS-485 flashes upon communication via RS-485.
Lights when communication link is established /
LAN
Flashes while communicating (orange)
Flashes when communicating via H-LINK (communication line)
H-LINK
(yellow)
POWER Lights while internal power is ON (green).
CH11, CH12
RS-485 Terminals
Currently not in use.
Do not use this terminal.
DSW1
Used to set terminal
resistances and fuses.
Status Indicator (LED)
Specification
ERROR (Red)
Lights upon error occurrence.
RS-485 communication (Yellow)
Currently not in use.
LAN communication (Orange)
Flashes upon communicating via
LAN.
H-LINK communication (Yellow)
Flashes upon communicating via
H-LINK.
POWER (Green)
Lights while power is provided
to Central Station EX.
SW1
Power switch for embedded
adapter
TB2, TB3, TB4, TB5
LAN Connecter
Used to connect to
extension adapter
(PSC-AD128EX3).
Power fuse
For protecting power
circuit.
TB1
Power terminals
Used to connect to
power line.
DSW2
Used to set wet
contact for external
output.
A12124820A