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16 en | Install the Bases F220 Series Detectors with F220-B6/C/E/R Bases
4998138694 -04 | 2007.01 Installation Manual Bosch Security Systems, Inc.
3.5.3 F220-B6R:
The F220-B6R is the standard base for four-wire configurations.
The Alarm Loop Relay (Terminals 1 and 2) is a normally-open
relay rated for 0.5 A at 120 VAC/DC. The relay closes on alarm.
Refer to Figure 3.5 for wiring details.
.
1. Resettable auxiliary power
input (positive [+] in on
terminal b2, out from ter-
minal b1; negative [-] in
and out from terminal
a1/a2) from the control
panel or from a previous
four-wire base and output
to the next four-wire base.
2. Initiating device circuit
(IDC) input (positive [+] in
and out from terminal 2
and negative [-] in and out
from terminal 1) from the
control panel or from a
previous four-wire base
and output to the next
four-wire base or to loop
termination (refer to
Figure 3.4 on page 15
[F220-B6E] or Figure 3.6
on page 17 [D275]).
3. Alarm Loop Relay
Fig. 3.5 Wiring F220-B6R Standard Four-wire Bases
F220-B6R
b1b2
ca1/a2
3
5
4
2
1
NO
C
+
_
_
+
1
2
2
3
1
+
_
+
_
4998138694Er7.book Page 16 Thursday, March 1, 2007 8:42 AM