Acorn CB200 Manual de aplicação - Página 7

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Acorn CB200 Manual de aplicação
Written by: R Patel
RS485 Cable Specification
Generic Type:
Conductors:
Alpha cable:
Belden cable:
NOTE:
On 4 and 8 zone panels the total available current for field devices is 800mA
at 28VDC. This current must be shared between the auxiliary 24VDC supply
and the four alarm circuits such that the total current drain across the five
circuits does not exceed 800mA.
4.1 Typical Terminal Wiring Schematic (8 zone illustrated)
3K9 RESISTOR
End-Of-Line
Device
-
-
-
NORMALLY
-
OPEN
SWITCH
CLASS
AUX FAULT
AUX FIRE
CHANGE
N/O
P
N/C
N/O
P
N/C
AL4- AL4+ AL3- AL3+ AL2- AL2+ AL1- AL1+
Note: This is a schematic representation only and not a PCB layout drawing.
Document No.: CBAPP Rev.: 7
Checked by:
RS422/RS485 data cable.
Single pair plus screen.
3492C, 6222C, 6412 or equivalent
8102, 8132, 9841 or equivalent
MANUAL CALL
POINT WITH
+
680R
RESISTOR
+
+
ZONES 2-8
SAME AS
+
ZONE 1
ALARMS 1, 2 & 3 SAME
AS ALARM 4
ALARM CIRCUITS
ZONE 8
Z8-
Z8+
RA0
RA1
Z1NL
NU
Page 7 of 11
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AJC
22uF CAPACITOR
End-Of-Line
+
Device
-
1A 2A
+
-
1
2
+
-
+
-
+
DETECTOR
BASE WITH
SCHOTTKY
DIODE
ZONE 1
REPEATER
AUX
Z1-
Z1+
B
A
SCN
24V
0V
BAT- BAT+
L E N
230V AC 50Hz
5A MAINS
SUPPLY
LINK FOR
SECONDARY EARTH
24V
BUZZER
AC IN
.
ENABLE
~
~
.
230V AC
TRANSFORMER
Date: 06/06/2003