UTC Fire and Security Det-Tronics R8471B Instructions Manual page 16

CURRENT OUTPUT
CHASSIS GROUND
POWER
SENSOR
EXTERNAL RESET
HIGH ALARM
HIGH ALARM / OC
AUX. ALARM
AUX. ALARM / OC
LOW ALARM
LOW ALARM / OC
FAULT
FAULT / OC
OC = OPEN COLLECTOR OUTPUT
(BASE MODEL ONLY)
Figure 11—Terminal Configuration for the R8471B
H
2
Terminal 3 – Chassis ground. Ground the
cable shield at this terminal.
If local wiring codes permit and if a ground fault
monitoring system is not being used, the minus
side of the dc power source can be connected
to chassis (earth) ground. Alternatively, a 0.47
microfarad, 100 volt capacitor can be installed
(terminal 5 to ground) for best immunity against
electromagnetic interference.
Terminal 4 – Connect to the positive (+)
side of the 18 to 32 vdc power
source.
Terminal 5 – Connect to the negative (–) side
of the dc power source.
Terminal 6 – Connect to the red (+) lead of
the sensor. If a separate trans-
mitter is used, no connections
are made to this terminal.
Terminal 7 – Connect to the black (–) lead of
the sensor or the 4 to 20 ma dc
signal input from the transmitter/
sensor assembly.
Terminal 8 – A normally open momentary clo-
sure switch can be connected
between this terminal and the
negative ( –) side of the power
source for remote reset.
2.1
–
1
+ 2
3
+ 4
18 TO 32
VDC
–
5
POWER
+
6
SIGNAL –
7
8
9
10
11
12
13
14
15
16
B1390
S Controller
NOTE
R8471B CONTROLLER
–
1
CURRENT OUTPUT
+
2
CHASSIS GROUND
3
+
4
18 TO 32
POWER
VDC
–
5
POWER
+
6
SENSOR
SIGNAL –
7
EXTERNAL RESET 8
HIGH ALARM
9
HIGH ALARM / OC
10
AUX. ALARM
11
AUX. ALARM / OC 12
LOW ALARM 13
LOW ALARM / OC
14
FAULT
15
FAULT / OC
16
Figure 12—A Typical System – R8471B with Relay Outputs, Non-
Isolated Current Output and C7064E Sensor
Terminals 9 and 10 – High Alarm Output.
Terminals 11 and 12 – Auxiliary Alarm Output.
Terminals 13 and 14 – Low Alarm Output.
Terminals 15 and 16 – Fault Output.
R8471 CONTROLLER
–
CURRENT OUTPUT
+
CHASSIS GROUND
+
18 TO 32
POWER
VDC
–
POWER +
SENSOR
–
SIGNAL
EXTERNAL RESET
HIGH ALARM
HIGH ALARM / OC
10
AUX. ALARM 11
AUX. ALARM / OC 12
13
LOW ALARM
LOW ALARM / OC
14
FAULT
15
FAULT / OC
16
*
NO CONNECTION
Figure 13—A Typical System - R8471B with Relay Outputs,
Isolated Current Output and Optional Transmitter
14
+ –
4 TO 20 MA
+
24 VDC
–
RESET
HIGH
ALARM
AUXILIARY
ALARM
LOW
ALARM
FAULT
4 TO 20 MA
+
–
–
1
24 VDC
+
2
3
+
4
24 VDC
–
5
6
*
7
8
RESET
9
HIGH
ALARM
AUXILIARY
ALARM
LOW
ALARM
FAULT
RED
BLK GREEN
C7064E
A1427
TRANSMITTER
+
SIG
–
SENSOR
A1428
95-8401