Manual EN
Uninterruptible Power Supply
V 1.0
Charge and control units
BLOCK Transformatoren-Elektronik GmbH
Max-Planck-Strasse 36-46, 27283
.
Verden, Germany
31.08.20 / SCH
Subject to technical changes
13
Safety shutdown
The output has been switched off to protect the charge and control unit and consumption.
If, during the switch-on procedure, it is detected that the voltage is too low < 18 V / 9 V at
24 V / 12 V operation, or that the voltage is too high > 30 V / 15 V at 24 V / 12 V opera-
tion, there will be a 60 second wait time for the rated voltage to return. If there is no
change to the voltage after the wait time is over, the system switches to Shutdown Mode.
Shutdown Mode
Shutdown Mode has been activated due to safety shutdown.
If the line voltage does not fall below 3 V within 5 seconds, the unit switches to safety shut-
down again. If the mains voltage does not reach the rated voltage after three passes, the
wait time in Shutdown Mode is extended to 120 seconds.
Buffer mode is stopped (buffer time has expired or buffer mode is stopped due to deep dis-
charge protection) and the mains voltage is not in the rated range. The red LED signals this
status for another 5 seconds, after which the system is switched off.
Startup from the battery
If the unit must be started up externally without connecting to the voltage supply, the charge
and control unit enables startup from the connected battery. By applying 0 V to the “Start”
terminal, the charge and control unit is started in buffer mode and the connected load is
completely supplied by the connected batteries.
If mains voltage is present after the unit is powered up, the charge and control unit automat-
ically switches to Normal Mode.
Note:
In the factory settings, the statuses of the LED displays are simultaneously signaled via the
signal outputs. If there is a custom assignment of the signal outputs, deviating signal sta-
tuses of the LED displays are possible. When creating custom assignments, ensure that
only logical combinations are signaled.
