Service manual

CIRCUIT DESCRIPTION
6-44
October 1999
Part No. 001-2009-201
6.13.2 ISOLATED INPUTS
The isolated alarm inputs are provided via a ter-
minal block on the back of the repeater (see Figures
6-16 and 6-17).
The isolated inputs are driven by either AC or DC
signals. The active high inputs can be set by switches
to be polarity sensitive, non-polarity sensitive or add a
resistance in series to dissipate unused power (see Fig-
ure 6-18).
The active low inputs can also be set for either
+5V or +15V operation when a ground closure is
required to provide an active alarm.
Figure 6-16 4 I/O J1 ALARM OUTPUTS
Figure 6-17 4 I/O J2 ALARM OUTPUTS
Standard 12V/24V AC control transformer out-
puts can be accepted as well as DC voltages. This
input voltage range is 5-24V RMS. External resistors
connected in series may be used to extend the input
voltage range.
Figure 6-18 S500-S503
Figure 6-19 ALARM EXAMPLE
6.13.3 ALARM INDICATORS
There are three forms of alarm indicators from
the repeater. One form is the two red LEDs and dis-
play combination on the MPC. Refer to Table 1-1 for
the combinations and definitions of the active alarms.
Another form is the output relay to the terminal
blocks at the rear of the repeater where outputs can be
wired to external devices or to alarm inputs.
25
26
A
L
A
R
M
I
N
A
L
A
RM
O
U
T
I
/
0 1
3
1
2
4-
3
-
3+
4+
3
+
4-
3
-
4+
IA
C
41
E
X
TO
UT1
COM 49
C
OM
5
0
TXD IN
RX VOICE
TX VOICE
BR
X
WB
A
ND
C
OM
M
6
SQ EN
E
XTREQ2
COM 1
7
SYNC IN
T
XD
OU
T
COM
5
3
C
OM 5
4
COM 5
5
33
34
A
L
A
R
M
S
1
I
N
+
2 IN
+
1
O
UT +
2 OU
T
+
2
OUT
-
1
OUT
-
2 IN -
1
I
N
-
AC FAIL
1
2
J2
1
2
3
45
6
7
8+5V
+15V
P500
ALARM +
ALARM -
ON
+5V
SECURITY DOOR
SMOKE
DETECTOR
DOOR OPEN
AC FAIL
TRANSCEIVER
SENSOR ACTIVE
REPEATER 1
REPEATER 2
REPEATER 3
REPEATER 4
ALARM 1 OUT
ALARM 1 IN
ALARM 1 OUT
ALARM 1 IN
ALARM 1 OUT
ALARM 1 IN
ALARM 1 OUT
ALARM 1 IN
ALARM 1 OUT
REPEATER 5
ALARM 3 IN
ALARM 1 IN
ALARM 2 IN