Phonetics Annunciator Module SCADA 3000 - Manual (Page 7)

AM-7
Annunciator Module
the panel. Re-install the locking side panels and tighten the Allen screws to secure the enclosure
to the panel. See Figure 2 below.
Rear of
Module
locking
side
panel
Panel
Allen
screw
Figure 2: Rear view of mounted annunciator module
Labeling
The Annunciator Module comes with a blank label on the front on which you can write a de-
scription to identify each light—such as the corresponding alarm or output. We include addi-
tional blank labels for your convenience.
POWER SUPPLY AND GROUNDING
The Annunciator Module operates on 10-15VDC. Typically the module is powered from the
AUX PWR terminals on the SCADA 3000 main unit. This is preferred because the AUX PWR
from the main unit is battery-backed in the event of a power failure, when a battery is connected
to the main unit. Alternately, you may connect the module to any 10-15VDC power source.
The module requires 1.5 Watts of power. See Figure 3.
A B Y Z EG
12VIN
+
RS232-DTE
COM 2
RS232-DCE
COM 1
15V
+IN- AUX
+PWR-
EG BAT
+ -
24V
FUSE
SPARE
4A
4
Annunciator Module
SCADA 3000
Connect to Electrical
Earth Ground
AUX
Figure 3: Annunciator Module connected to the SCADA 3000
It is extremely important that the EG pin be connected to a good earth ground. This will
prevent communication errors due to differences in ground potential between modules in
addition to possible damage due to voltage transients and surges.