Johnson Controls FC-2000 Installing page 48

Indicating Up to 2.0 amps of RMS regulated current for powering indicating
Appliance Power
appliances can be drawn from TB2 terminals 3 (+) and 4 (-). Power is not
(24 VDC)
removed from these terminals during system reset.
Note: This output is not suitable for powering annunciators!
System Harness
Internal power for the system is provided via the power harness. Connect
Connections
this harness from P2 on the MPS-24B to the CPU. Signaling between the
CPU and the MPS-24B is accomplished through connection of the power
ribbon (71085) to P3 on the MPS-24B.
Field Wiring the
MPS-24B Power
Supply
4-W ire Smoke D etector Pow er
+ 2 4 V D C (2 0.4 -2 6 .4 , 2 0 0 m V rip p le ),
2 0 0 m A m a x . F ilte re d , re gu la te d, a nd
re s e tta bl e. P o w er li m ited b ut w h e n
u s e d fo r 4 -w ire s m o k e de te c to rs , m us t b e
s u p erv is e d b y a U L L is te d P o w e r
S u pe rv is io n R e la y. P o w e r ru n to
A C M a n nu nc ia to rs is in h e re n tl y s up e rvis e d .
Primary Power
120 VAC, 50/60 HZ, 1.8 amps max.
Hot
Neutral
Ground
Earth G roun d
C o n n e ct to c h a s s is w ith
a g ro un d in g c a b le
a s s e m b ly (7 1 0 73 ).
T B 1
1 2 3
C u t J P 2 to d is a ble th e
b a ttery c h a rg e r w h e n
e m p lo y in g th e N R 4 5 -2 4
R e m o te B a tte ry C h a rg e r.
J P 2
Figure 34: Field Wiring the MPS-24B Power Supply
48 Installation—Installing the FC-2000
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P 2
4 5
Cu t R5 5 to d isa b le E a rth Fa u lt De tec tion
J P3
J P1
C om m o n
Indicating A ppliance Power
+ 2 4 V D C p ow e r li m ited , filtere d,
R M S re g u la te d , n o n -re s e tta b le , 2 .0 a m p s
(i n a larm ) m a x . P o w e r is s u p erv is ed b y
o u tp u t m o d ul e (su ch a s a n IC M -4 ). N ot
for a nn u n c ia to rs !
Secondary Pow er
2 7 .6 V D C , 6 .5 to 17 A H . S u p e rv is e d
C om m o n
a n d p o w e r-lim ite d .
F a s t C h a rg e = 7 5 0 m A m a x .
T ri c kl e C h a rg e = 2 0 m A (ty p )
T B 2
1 2 3 4 5 6
P3
P 4
P5
P6
mps-24b
B a tt ery (+ )
Battery (-)
LED In dicators
N e g a tiv e G ro u n d F au l t
P o s itiv e Gro u n d F a u lt
B a tte ry F a il
A C P o w e r F ail
Supervisory C able to A VPS-24
No Connection
C u t J P 1 to m a k e 4 -W ire S m o ke
D e te c to r P o w e r o n T B 2 Te rm in a ls 1 a n d 2
a n o n -re s e tta b le ci rc u it.
System Trouble B us
(N orm a ll y lo w v ol ta g e g o e s h ig h
to + 5 V D C w h e n M P S -2 4 B e n ters
a trou b le c o nd itio n .)