UB40.241
UB-Series
24V,
40A,
DC-UPS
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.
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16/34
Fig. 12-2
Flashing pattern for green “Status LED”
Each battery has its own status LED. The signals are the same for both
batteries. (Listed in order of priorities)
Replace Battery, Battery or DC-UPS temperature too hot:
The LEDs are off when replace battery signal is active or the temperature of
the DC-UPS or battery is too hot.
Ready:
The LEDs are on solid when the battery is charged (> 85%), no wiring failure
is recognized, input voltage is sufficient.
After the unit is turned-on with charged batteries, it can take 20s or longer
that the signal switches from charging to ready.
Charging:
The LEDs are flashing with a low frequency when the batteries are
charging, and the state-of-charge is below 85%.
Buffering:
The LEDs are flashing with a high frequency when the unit is in battery
mode.
1
0
Ready
1
0
Charging
1
0
Buffering
5
Hz
1
0
Replace Bat.,
Temp.
Fig. 12-3
Flashing pattern for yellow “Diagnoses LED”
This LED helps troubleshooting. (Listed in order of priorities)
Overload:
The LED is on solid when the input or battery current is permanently above
40A in battery or power supply mode.
Buffer time expired:
The LED is double flashing when the output has switched off due to the
setting of the buffer-time limiter or discharged battery. This signal will be
displayed for 15 minutes after the output has switched off.
Replace Battery:
The LED is flashing with a low frequency when one battery has failed the
periodically performed battery quality test. In case the centre-tap
connection is present, the battery that has failed is indicated by the green
LED which is off. Otherwise, both LEDs are off. The battery should be
replaced as soon as possible.
Inhibit active:
The LED is flashing with a high frequency when buffering is disabled due to
an active inhibit signal.
1
0
Overload
1
0
Replace
Battery
1
0
Buffertime
expired
1
0
Inhibit
active
5
Hz
Fig. 12-4
Flashing pattern for red “Error LED”
This LED indicates that charging or buffering is not possible. (Listed in order
of priorities)
Check Wiring:
The LED is on solid when a failure in the wiring, battery or battery fuse is
identified.
Input Voltage:
A single flash indicates that the input voltage is above 30V or the battery
voltage was below 23V before a buffer request.
Temperature:
A double flash indicates that the temperature of the DC-UPS is too high
(above 70°C) or that the temperature of the battery is too high (above
50°C) or too low (below -15°C). Battery temperatures indications require a
connected battery temperature sensor.
1
0
Check
Wiring
1
0
Input
Voltage
1
0
Temp.
