BATTERY CHARGING
The S3B Sound Barrier is shipped with the battery pack disconnected. A Battery Enable switch has been fitted.
During shipping this is in the ‘Off’ position. An intelligent charging circuit is fitted. This limits the maximum current
draw to 1 Amp at 12-volts DC. Fastest charging time (At 1 Amp) is 50 minutes. Lower charging currents will require
longer.
Once the device is connected to an external 12-volt DC supply it will activate when triggered with the ‘Battery
Enable’ switch in both the ‘On’ and ‘Off’ positions.
CONNECTIONS
The S3B Sound Barrier connections are shown on the schematic above. External power is supplied via the 12-volt
and 0-volt connections. Activation trigger is provided by connecting EN+ and EN- through a Normally Closed (N/C)
relay opening in alarm. Status monitoring is via the volt-free relay outputs (NO / NC / C).
Contacts closed = Tamper closed, battery switch ON & battery OK.
Contacts open = Tamper closed and/or Dip 7 is ON (Sounder disabled) and/or battery fault.
BATTERY PACK
The S3B Sound Barrier battery pack is retained using a Velcro fastening and is easily removed. The pack is
connected to the PCB using a small push-on connector. This should be checked when installing.
Battery Data:
Charging Voltage:
12 – 13.5-volts DC
Maximum Charging Current:
12-volt 1 Amp
Maximum Charging Time:
50 mins @ 1 Amp
Battery Specification:
DC 10.5-volts 1 Ah
12v
- 12-volt power in
GND - 0-volt
GND - spare 0-volt
EN+
connect across an N/C
normally closed relay
EN-
opening in ‘Alarm’
NO
Status monitoring volt free
NC
changing state when
C
tamper changes state
DIP
switches
}
}
Battery Enable
On/Off
Tamper
Battery Connector
