Warning Sign Manual - Serial.docx
Page 7 of 8
5.2
NON 485 Serial Connected
When 485 communications is not used, wiring must be terminated to 24V Trigger terminals.
Note:
This connection is not suitable for the System Inoperative sign which will illuminate on loss of 485
communications.
IN OUT
+ 1 2 + 1 2
24V
TRIGGER
FROM EXTIN
GUISHANT PAN
EL
OR PREVIOUS WARN
IN
G SIGN
+24V
0V
LVL1 CONTACT
LVL2 CONTACT
TO N
EXT WARN
IN
G SIGN
2
1
+
WARNING SIGN
TRIGGER INPUT CONNECTIONS
Warning signs may be wired in series with the proviso that fire control panel end of the cabling run should
be connected to the IN and the next warning sign should be connected to the OUT.
Connecting the + supply to the + terminal and the – supply to the 1 terminal will illuminate the lower half of
the sign as shown below.
Connecting the + supply to the + terminal and the – supply to the 2 terminal will illuminate the upper half of
the sign as shown below.
Connecting the + supply to the + terminal and the – supply to both 1 the 2 terminals will illuminate both
halves of the sign as shown below.
Up to 3 additional signs may be installed from the trigger terminals of each 485 connected sign, in which
case the sign must be powered directly from the 24V supply. See Section 5.1
