IBM Fire Alarm Back-up UPS1481 UNIT - Manual (Page 11)

OnLine Power
(6002-1646) REV.X8 5
1-3 FUNCTIONAL BLOCK DIAGRAM (CONTINUED)
INPUT
C.B.
K1
1
3
2
INPUT POWER
T.B.
TB1
THE FUNTIONAL BLOCK DIAGRAM OF U.P.S
(OPTION)
C1
INPUT
FILTER
INPUT
CONTACTOR
T2
STEP
DOW
N
T4
CONT-
ACTOR
COIL
FULL
BRIDGE
RECTIFIER
BR1
K
L1
L2
FILTER
DC
CHOPPER
UP/DOWN
BATT.
CHARGER
Q3/4
Q5/6
POWER
FACTOR
CONTLR
INVERTER
(+)
(-)
Q1 /
Q2
(A1) POWER BOARD ASSY.
L2
OUTPUT
FILTER
SCR
DRIVER
T2
FAX
XFMR
FANS
BYPASS
SCR
BYPASS
1
2
OUTPUT
C.B.
OUTPUT
XFMR
T1
7
ONLY USED FOR
MULTIPLE
VOLTAGE
OUTPUT UNIT
L4
BATT C.B.
CB2
(+)
(-)
C3
FILTER CKT
(+)
(-)
GND
EXTERNAL BATT C.B.
UNIT GND
CONTROL
BOARD
P4/J4
P12/J12
A2
CONTACTOR
CONTROL
SIGNAL
LCD DISPLAY
J7
LED
DISPLAY
(OPTION)
RS232
AS400
OUTPUT
OUTPUT
XFMR
T1
PRIMARY
1
3
2
7
6
5
4
OUTPUT
C.B.
0
120V
240V
-
OUTPUT
C.B.
BATT
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