Brooks BOWS020W, Operation & Technical Manual

Page: 19 / 33

OWS Standalone Manual
MA380 - Rev. 2.4
18
PCB181 R1 SUB760
FUSE 0V BAT+
0V
Vout
0V
Vi
n
SF
COM A/I
+
6 5 4 3 2 1
FAULT
SUPPLY
FAULT O.C.
SUPPLY
FAIL
POWER
INHIBITED
AUTOTEST
MAINS ON
ISOLATE
AMBER GREEN RED RED RED GREEN
P1
P2
GREEN
S/No
M
O
AUTOTEST BATTERY
RUNNING
RP3
RP4
C3 C2
ZD3 R3
U1
C4
D6
Q6 Q2
Q1
RP1
M2
LF1
SW1
R4
R5
C5
ZD2
R1
R2
C1
ZD1
Q4 Q5
Q3
RP2
CR1
LK1 D2
TP2
TP3
M
1
TB
2
D3
LD7 LD6 LD5 LD4 LD3 LD2 LD1
D4
D7 D5
RL4 RL3
TH1
RL2
RL1
D1
TB4
TP1
C7
M
3
TB3
TB5
U2
V+ COM NO NC O/C NC NO
SUPPLY FAULT POWER FAIL
BROOKS
+
-
+
-
+ -
POWER FAIL
DRY CONTACT
FOR MORE THAN 5A POWER SUPPLY
POWER SUPPLY FAULT
DRY CONTACT
EXTERNAL TEST
INHIBIT
28.2V DC IN
TO POWER ON LED
27.5V DC OUT
MONITORED
TO BATTERIES
TO EXTERNAL CIRCUIT BREAKER
PI
C
16F
88
I/P
TO POWER SUPPLY FAULT LED
or WATCHDOG PULSE OUTPUT
Figure 11 SUB760 Power Supply Monitoring Board
The power supply supervision module continuously monitors the battery charger and batteries to detect
any of the following fault conditions:

Loss of Mains power source,

Loss of standby power source (batteries),

Charger output voltage higher than 28.2V or lower than 26.5V,

Battery capacity low i.e. battery voltage less than 23.8V

Auto battery test fail,

Total loss of the dual power sources, battery voltage less than 21V.
SUB760 provides an automatic battery test facility every approximately 70 hours. During the test, the
DC supply input is disconnected and the system operates on batteries only for approximately 30 minutes
at normal quiescent condition. If the auto battery test failed, the power supply fault LED latches and the
test will be terminated, to reset the latched LED, press switch SW1.
An automatic battery test inhibit input is available to terminate the auto battery test, if required. A typical
application for the battery test inhibit switch is the alarm condition. An alarm N/O contact can be
connected to the input to inhibit the auto battery test in alarm condition, this is normally used when the
OWS is fitted inside the CIE.
The on-board jumper link LK1 is set as shown in Table 10. Due to different requirements in both
AS4428.5 and NZS4512, LK1.3 must be fitted when the power supply supervision module is to be used
in any system for the New Zealand market.
Table 10 Power Supply Supervision Jumper Link Setting
Jumper Function Position Selection
LK1.1 Mode of Operation
IN Test Mode (factory only)
OUT Normal Mode (default)
LK1.2 Not Installed
LK1.3 Mode of Operation
IN New Zealand
OUT Australia (default)
LK1.4 Not Installed
LK1.5 Charger Fault Tolerance
IN
3%
OUT
2% (default)
LK1.6 Not used