S2000 15017 Rev H 10/08/96 P/N 15017:H
30
The MPS-24AF/MPS-24AFE Main Power Supply is capable of powering the control panel continuously during standby and
alarm conditions. A total of 3.0 amps (internal0 @ 24 VDC regulated is available from the main power supply for operating
the system during Standby conditions. No more than 6 amps @ 24 VDC can be drawn from the MPS-24AF.
Figures 5-1 and 5-2 illustrate connections for primary and secondary power to the MPS-24AF Main Power Supply, as well
as terminal and harness connections for the control panel.
C
ONNECTING
THE
P
RIMARY
P
OWER
S
OURCE
Primary power required for the MPS-24AF is 120 VAC, 50/60 Hz, 1.8 amps and primary power for the MPS-24AFE is 220/
240 VAC, 50/60 Hz, 0.9 amps. With the breaker at the main power distribution panel turned off, remove the plastic insulat-
ing cover from Terminal Block TB1 on the main power supply and connect the system primary power source. Connect the
service ground to TB1 Terminal 2 and ground the power supply assembly to the cabinet with a Chassis Ground cable (71073)
to TB1 Terminal 1. Connect the primary Neutral line to TB1 Terminal 4 and the primary Hot line to TB1 Terminal 6. After
completion of these connections reinstall the plastic insulating cover over the terminal strip. Leave the main power breaker
off until installation of the entire system is complete.
C
ONNECTING
THE
S
ECONDARY
P
OWER
S
OURCE
(24 VDC)
Secondary power (batteries) is required to support the system during loss of primary power. These batteries reside in the
control panel cabinet, or in a separate R45-24 Remote Battery Charger cabinet which can be mounted up to 20 feet away
from the control panel (for connection of an R45-24, refer to Figure 5-6).
Connect the Battery Positive Cable (71071) to TB2 Terminal 1 (+) and the Battery Negative Cable (71072) to TB2 Terminal
2 (-).
Do not connect the Battery Interconnect Cable (Part Number 71070) at this time. This connection will be made just
after initial primary system power-up.
F
OUR
-W
IRE
S
MOKE
D
ETECTOR
P
OWER
(24 VDC)
Up to one amp of current for four-wire smoke detectors can be drawn from TB3 Terminals 1 (+) and 2 (-). Power is removed
from these terminals during system reset. This 24 VDC regulated four-wire smoke detector power is power limited but must
be supervised via an UL-listed end-of-line power supervision relay. The power supervision relay is energized by the four-
wire power circuit and its contact must be connected in series with an initiating device circuit.
N
OTIFICATION
A
PPLIANCE
P
OWER
(24 VDC)
Up to 3 amps of regulated power-limited current for powering notification appliances can be drawn from TB3 Terminals
3(+) and 4(). Power is not removed from these terminals during system reset. If a resettable power circuit is desired, cut
JP5 on the MPS-24AF (Note that a maximum of 2 amps is available with JP5 cut.
) Note: On the Main Power Supply Bell
Power Harness, the fork lugs must be cut off and wires stripped for connection to the MPS-24AF.
A
NNUNCIATOR
P
OWER
(24 VDC)
AFM Annunciators can be powered either from the four-wire smoke detector output or the notification appliance power
output. Both outputs provide filtered, regulated, power-limited source required by the annunciators. The power run to the
annunciators is supervised by the annunciator (
Loss of Communications
error).
S
YSTEM
H
ARNESS
C
ONNECTIONS
Internal power for the system is provided via the power harness. Connect this harness from P2 on the main power supply to
the CPU. This same power can be fed to other boards or modules requiring internal power. Signaling between the CPU and
the main power supply is accomplished through connection of the Power Ribbon (71085) to P3 on the MPS-24AF.
5.1
T
HE
MPS-24AF/MPS-24AFE M
AIN
P
OWER
S
UPPLY
