Specifications
Notification
Appliances
Hazardous Location
Devices
Door Holders
& Relays
Initiating
Devices
3
EST3
Network
SUBMIT
Central Processor Unit
The 3-CPU3 is the heart of the
EST3 network node. As a sin-
gle node standalone sys-
tem, a single 3-CPU3 con-
trols up to 19 local rail
modules. For larger sys-
tems, up to 64 nodes in-
terconnect on a peer-
to-peer multi-prior-
ity token ring pro-
tocol network.
The 3-CPU3 con-
trols all local
panel responses
to automatic, user
initiated, or network reported
events. As a network node, it is an
equal among peers: there is no master on the
network. Multi-priority token ring means that a
node with a new alarm has priority on the net-
work. This gives exceptional response times over
the network — less than three seconds.
Each 3-CPU3 provides connectors for mounting
network, RS-232, and memory expansion cards.
Removable terminal blocks on the 3-CPU3 sup-
port connection of network and audio data wir-
ing. On-board common relays also terminate at
the 3-CPU3 terminals. To aid in troubleshooting and service, status LEDs monitor local rail, network, RS232 and audio
data communications.
3-CPU3 Central Processor Unit Module Catalog Sheet: 85010-0133
Network Communication Card
The Network Communications card mounts to the back of the Central Processor Unit. The 3-RS485A card provides a
Class A (Style 7) or Class B (Style 4) circuit for network communications signals and two additional circuits for Class A
(Style 7) digitized audio signals. The 3-RS485B card provides a Class B (Style 4) circuit for network communications
signals and a second Class B (Style 4) circuit for the digitized audio signals. Network messages received by the Network
Communications card are re-transmitted to the next network node.
3-RS485A Network Communication Card Class A (Style 7) Catalog Sheet: 85010-0133
3-RS485B Network Communication Card Class B (Style 4) Catalog Sheet: 85010-0133
RS-232 Communication Card
The 3-RS232 Communication Card mounts to the back of the 3-CPU3. The 3-RS232 has two optically-isolated RS-232
ports. The ports support connection of a printer and/or an external command center.
3-RS232 RS-232 Communication Card Catalog Sheet: 85010-0133
Power
Supply
Power
Supply
J8
J9
J10
J11
J8
J9
J10
J11
Central
Processor
Unit
Module
3-CPU
L
R
M
L
R
M
L
R
M
L
R
M
L
R
M
3-CHAS7
3-
CPU3
EST3
Network
Central Processing
Unit Module
1 2435678910
N.C. TROUBLE
COM. TROUBLE
N.O. TROUBLE
N.O. ALARM
COM ALARM
N.C. ALARM
N.O. SUPV.
COM SUPV.
N.C. SUPV.
SYSTEM TROUBLE RELAY
(shown in normal state)
SYSTEM SUPERVISORY RELAY
COMMON SYSTEM RELAYS
SYSTEM ALARM RELAY
11 112214413315516617718 819 92010
OR
Network Data Riser
Network Audio Riser
Class A only
Class A only
Network Audio Riser
To/From previous
panel or
a 3-ASU
3-CPU(1)(3)
To previous panel
Module or a
3-ASU
3-CPU(1)(3)
To/From next panel
Module3-CPU(1)(3)
From next panel
3-CPU(1)(3) Module
PIN 1
PIN 14
PIN 13
PIN 25
PIN 1
PIN 9
(2) TXD
(2) RXD
Connect to TB1 on 3-CPU3 Module
Connect to TB2 on 3-CPU3 Module
(3) RXD
(3) TXD
(7) COM
(5) COM
DB25 FEMALE
(REAR VIEW)
DB9 FEMALE
(REAR VIEW)
PLUG PIN #
PIN FUNCTION
TO PRINTER OR REMOTE
COMMAND SYSTEM,
TO PRINTER OR REMOTE
COMMAND SYSTEM,
ISOLATED PORT
TO PRINTER OR REMOTE
COMMAND SYSTEM.
PORT #2(isolated)
PORT #2(isolated)
PORT #1
PIN 1
PIN 14
PIN 13
PIN 25
(2) TXD
(3) RXD
(7) COM
DB25 FEMALE
(REAR VIEW)