Det-Tronics R7404 - Startup Procedure

7.1 18 95-8242
Status and detector output terminals 48 to 55 provide
binary output representations of the front panel digital
displays for zone, detector, and system status. Tables
3 and 4 list the identification codes and the logic states
ofthe“Fault”and“OutputsInhibited”bitsforthevarious
status conditions.
Under “normal” (no fault) conditions,the Faultoutput is
energized (logic 1).
The Data Bus terminals (56 to 63) and the DMA (direct
memory access) and Data Strobe terminals (28 to 32)
provide external access to the microprocessor, which
permits inter-controller communication.  For further
information,contacttheFieldSupportGroupatDetector
Electronics. (This feature is only available on R7404
models with Remote Surveillance, Nuclear Surveillance
and STAR Logic.)
STARTUP PROCEDURE
CAUTION
Placing the controller in the Test mode inhibits
its outputs, rendering the system incapable of
actuating any extinguishing or alarm circuits that
are connected to it. For maximum safety, however,
secure output loads (remove power from any devices
that would normally be actuated by the system)
before manually testing the system. Remember to
place this same equipment back into service when
the test is complete.
1. After setting the selection switches and making all
electrical connections, plug the controller into the
connector.
2. Turn on power and perform Checkout Procedure.
3. If the controller appears to be operating normally,
remove mechanical blocking devices and restore
power to the extinguishing loads.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
+
–

(A) +290 VDC
B - INPUT 1
B - INPUT 2
B - INPUT 3
B - INPUT 4
B - INPUT 5
B - INPUT 6
B - INPUT 7
B - INPUT 8
D1-1 o
i
DRIVER
D1-2 o
i
DRIVER
D1-3 o
i
DRIVER
D1-4 o
i
DRIVER
D1-5 o
i
DRIVER
D1-6 o
i
DRIVER
D1-7 o
i
DRIVER
D1-8 o
i
DRIVER
D2-1 o
i
DRIVER
D2-2 o
i
DRIVER
D2-3 o
i
DRIVER
D2-4 o
i
DRIVER
D2-5 o
i
DRIVER
D2-6 o
i
DRIVER
D2-7 o
i
DRIVER
D2-8 o
i
DRIVER
DMA OUT AVAILABLE
DMA OUT
DMA IN
DATA STROBE
DMA IN AVAILABLE
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
ZONE OUTPUT 1
ZONE OUTPUT 2
ZONE OUTPUT 3
ZONE OUTPUT 4
ZONE OUTPUT 5
ZONE OUTPUT 6
ZONE OUTPUT 7
ZONE OUTPUT 8
FIRE LOGIC “A”
FIRE LOGIC “B”
ALARM OUTPUT
EXTERNAL RESET/INHIBIT
OUTPUTS INHIBITED
FAULT OUTPUT
EXTERNAL ACCEPT
STATUS & DET. OUTPUT S1
STATUS & DET. OUTPUT S2
STATUS & DET. OUTPUT S3
STATUS & DET. OUTPUT S4
STATUS & DET. OUTPUT S5
STATUS & DET. OUTPUT S6
STATUS & DET. OUTPUT S7
STATUS & DET. OUTPUT S8
DATA BUS 0
DATA BUS 1
DATA BUS 2
DATA BUS 3
DATA BUS 4
DATA BUS 5
DATA BUS 6
DATA BUS 7
CHASSIS (EARTH) GND
A
B
C
D
C7050
ZONE 1
A
B
C
D
C7050
ZONE 2
A
B
C
D
C7050
ZONE 3
A
B
C
D
C7050
A
B
C
D
C7050
FIRE ALARM CONTROL CABINET
A
B
C
D
A
B
C
D
J1-3
J1-5
J1-2
J1-21
A
B
C
D
J1-3
J1-4
J1-2
J1-20
A
B
C
D
J1-3
J1-5
J1-2
J1-13
A
B
C
D
J1-3
J1-6
J1-2
J1-22
D0286
J2
R7404J1
10 TO 38 VDC
}
A
B
C
D
C7050
A
B
C
D
J1-3
J1-6
J1-2
J1-14
0.47 uf, 250 VDC
NON-POLARIZED
Figure 23—Typical System - Six Detectors in Three Zones