The above data may be changed without prior notice
BR735D Extended Eng R1.0 1509
Batteries
Two 12V, 5AH maintenance free Lead-Acid rechargeable type batteries are utilized to activate the
SACV as well as to energize the electronic control circuits under Power Failure conditions. The
batteries are serially connected in order to provide 24V.
The SAVC incorporates charging circuitry for the batteries.
Charging method is Floating charge in constant voltage.
The SAVC is equipped with 3 test points (refer to Figure 3)
in order to actively monitor battery voltage and set battery
charge voltage.
Test points are "Charge Voltage", Battery Voltage and the
ground referenced point "COM".
Charge voltage can be set using "Charge Potentiometer".
Remark: Max. charge current is 300mA.
The SAVC is constantly monitoring Battery voltage and
charging parameters and provides warning using the
display and BATT. LED. (Refer to Table 2)
Since the main issue of the UPS is its ability to activate,
under specified circumstances, two fully charged batteries,
they must be protected from being completely or even
partially depleted. As such, at the end of the user defined operation period (6 to 120 sec.), the
electronic circuit disconnects the SACV and also itself from the batteries.
Such approach assures that
even under extremely long
Power Failure periods, which
are quite uncommon, the
batteries still keep adequate
energy, in order to be ready
for an additional Power Failure
without being charged first.
Self Test
Pressing the "Test" pushbutton for 3 seconds starts self test. The display shows flashing "tst".
While in test mode, the SAVC enacts the solenoid for the duration set by TSOL, after activation
delay TD1. At the end of the test, the SAVC returns to normal operation mode.
If while in test procedure a real fault occurs, the SAVC completes the test operation with the
preset time delays and when it concludes, the SAVC disconnects the solenoid and the batteries.
Self test can be started only when supply voltage is OK.
Alarm Relay
The alarm relay is activated in the following faults:
Power Supply input fault
Solenoid coil is disconnected or shorted.
Battery: Short circuit, Low voltage or Battery wires disconnected.
Communication fault (When communication is set to "ON")
