Ampac FireFinder II Series Specifications download pdf (Page 29)

Page 24

FIREFINDER SERIES II INSTALLATION, COMMISSIONING &

OPERATION

5.2 Expansion Board

The Expansion Connection Board is used to increase the capacity of the controller from 4 Slave

CPU’s to 8. Connection from the Controller to the Expansion Board, which must be mounted within

200mm of the Controller, is made via a 20 way flat cable Slave CPU number 5 is an integral part of

the Expansion Board, only Slave CPU’s 6, 7 and 8 are plug ins. See Figure

Connections

CN1

To Main Connection Board

CN2

To Slave CPU 2

CN3

To Slave CPU 3

CN4

To Slave CPU 4

CN5

On board Slave CPU

302 - 6880 JUN 98

RN5

RN4

C15

U10

C16

C18

C20

C22

C24

C26

C27

C28

U11

RN3

CN5

TP1

RN2

CN1

C23

U12

C11

C12

C13

C14

C17

C19

C21

C25

C29

TP2

C10

D1D2

RN1

CN2

CN3

CN4

Slave CPU

To CN2 of the

Main Controller

Slave CPU 5

Note: Slave CPU 5 is incorporated

on the Expansion Borad

Slave CPU's 6,7,& 8 all mount onto

the Expansion Board in the same way

as they do to the Main Controller

Figure 22: Board Overlay

5.3 Expansion Controller

An Expansion Controller can be described as a Main Controller without a Front Panel. A maximum of

3 can be introduced into any one Node that is into any one FACP and require a Network Interface

Cards in order to communicate with the Main Board / Controller.

Connecting Controllers together (Networking within the same cabinet) expands the system beyond 8

Slave CPU’s, that is the Main Board plus an Expansion Board.

Networking in this way enables the connection of up to 4 Expansion Controllers within the same

FACP cabinet. This requires the use of NIC’s but offers the added advantage that the RS422

communication bus is internal and all Controllers are physically and logically located at the same

Node. It is now possible to Network up to 32 Slave CPU’s in one cabinet with each Slave CPU

connected to an Addressable Loop, 16 Conventional Zone Board or Digital I/O Board. With this

configuration only one Controller has a Front Panel Board.

Once the system has been expanded to this degree it is obviously quite large and some form of

indication at a point remote from the FACP may become necessary. This is achieved with the use of

a Communications Extender Board for SmartTerminal’s and/or LED Mimic. Adding a High Level

Interface Board to the Communications Extender Board allows for the addition of HLI, EV3000,

Remote Serial Printer or SmartGraphics facilities.

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Ampac FireFinder II Series Specifications Page 29

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