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Power
2.2
Power
!
WARNING: Several different sources of power can be connected to this panel. Disconnect all sources of power
before servicing. The panel and associated equipment may be damaged by removing and/or inserting cards, modules
or interconnecting cables while this unit is energized.
2.2.1 AC Power and Earth Ground Connections
Primary power required for this panel is 240 VAC, 50 Hz, 1.2 amperes.
Overcurrent protection for this circuit must comply with Article 760 of the
National Electrical Code (NEC) and/or local codes. Use #14 AWG (2.00
2
mm
) or larger wire with 600 volt insulation rating.
In order to comply with Compatibility Directive 89/336/EEC for European
Communities (EU Requirements), a ferrite bead P/N 29085, must be installed
on the Mains for RF filtering. Refer to Document #50404 for details.
Connect a wire from one of the mounting screws for the system transformer to
a known solid earth ground. This connection is vital for maintaining the control panel's immunity to unwanted tran-
sients generated by lightning and electrostatic discharge.
2.2.2 Battery Power
Observe polarity when connecting the battery. Connect the battery cable to J3 on the MS-9200 main circuit board
using the plug-in connector provided. See "Power Supply Calculations" on page 77, for calculation of the correct
battery rating.
!
WARNING: Battery contains sulfuric acid which can cause severe burns to the skin and eyes and can destroy fab-
rics. If contact is made with sulfuric acid, immediately flush the skin or eyes with water for 15 minutes and seek
immediate medical attention.
2.2.3 DC Power Output Connections
All DC power outputs are power-limited.
DC Power Outputs
FIGURE 2-5:
Power-limited Nonregulated
Special Purpose Power
2.5 amps, 24 VDC power for
Notification Appliance Circuits.
TB4 Terminal 1(+) and 2(-).
Note: This power is unsuitable for
EIA -485 annunciation devices.
Power-limited
Nonresettable Power
300 mA, 24 VDC nominal filtered,
nonresettable power can be drawn
from TB4 Terminals 3(+) and 4(-).
+
-
+
-
+
-
1
2
3
4
5
6
Document #50428
Rev. C1
2/15/99
GRD
NEUT
HOT
Power-limited
Resettable Power
300 mA, 24 VDC nominal filtered,
resettable power can be drawn
from TB4 Terminals 5(+) and 6(-).
P/N 50428:C1
25
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