Jun. 2020 / Rev.0.1 DS-UB40.241-EN All values are typical figures specified at 24Vdc input voltage, 40A output current in
power supply mode at 25°C ambient, no charging and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
DC-UPS CONTROL UNIT
▪ 1-Battery-Concept - Each 12V battery is charged and monitored
separately for longest battery life, matching of batteries not
necessary
▪ Output is decoupled from the input to separate load circuits into
buffered and non-buffered sections
▪ Allows VRLA battery sizes between 12Ah and 200Ah;
“Battery Size” selector for various battery sizes
▪ 50% Extra output power for up to 5s
▪ Superior battery management for longest battery life
▪ Comprehensive diagnostic and monitoring functions
▪ “Replace Battery” signal included
▪ “Battery-Low Prewarning” signal included
▪ Selectable buffer time limiter
▪ Temperature controlled battery charging
▪ 3 Years warranty
The UB40.241 is an uninterruptible power supply controller (DC-
UPS controller), which is used in combination with a 24V power
supply and an external 24V-battery pack to bridge power
failures. When the power supply provides sufficient voltages,
the DC-UPS controller charges the battery. When the power
supply voltage fails, the energy stored in the battery is released
to the DC bus in a regulated process.
A unique feature is the battery charger, which can balance two
unmatched batteries and which includes two independent
battery testers for the two 12V batteries connected in series.
This feature makes matching batteries unnecessary and allows
for precise battery charging, testing and optimized usage of the
battery capacity to achieve the longest battery service life.
The device includes various battery diagnostic functions
including a battery-low pre-warning signal that ensure a reliable
operation of the entire system. Furthermore, temperature
controlled charging extends the life of the batteries. It also
includes a selectable buffer time limiter as well as “Ready”,
“Buffering” and “Replace battery” contacts. For safety and
maintenance, an inhibit-input signal is included to enable phases
without enforced buffering.
Min. input voltage to start
charging and to enable
battery mode
Transfer voltage to switch
to battery mode
Internal current
consumption
<65Ah / ≥65Ah, incl.
charging current
Input to output,
at 20A / 40A
Battery input to output, at
20A / 40A
Derate linearly between +50 and +70°C
At 40A in power supply
mode, full batteries
DC-UPS UB40.241 Standard DC-UPS unit
Batteries UZK24.122 Battery module 24V, 12Ah
UZO24.122 UZK24.122 w/o batteries
UZK24.262 Battery module 24V, 26Ah
UZO24.262 UZK24.262 w/o batteries
UZK24.262-E1 Battery extension 24V, 26Ah
UZO24.262-E1 UZK24.262-E1 w/o batteries
UZW24.100 Connection and wiring kit
UZW24.101 Connection and wiring kit
UZS24.100 Sensor and center-tap board
For details or a complete approval list see chapter 19.
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