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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9.
S
IGNAL
O
UTPUTS
Please note:
If the buffering is terminated due to the deep discharge protection or due to the buffer time limiter, the last signal state is stored and
displayed for another 15 minutes.
Ready contact
The ready contact is closed when both batteries are charged more than typical 85%, no wiring failure is detected, input voltage is
sufficient and inhibit signal is not active.
The device can switch to battery mode regardless of whether the ready status is reached or not.
The contact opens at a too high battery or DC-UPS temperatures.
After the unit has been switched on with fully charged batteries, it may take 20s or more before the contact switches from charging to
ready.
Please note: After a short buffer event, the opening of the contact is suppressed for 5 minutes. This is to avoid a wrong signaling after it
can be assumed that the short buffer event has taken only little energy from the battery. If the battery has really been deeply
discharged after a short buffer event, a signal is only given after 5 minutes.
Contact ratings
Maximal 60Vdc 0.3A, 30Vdc 1A, 30Vac 0.5A, resistive load
Minimal permissible load: 1mA at 5Vdc
Isolation voltage
See chapter “
Dielectric Strength
”
Buffering contact
The buffering contact is closed when unit is in battery mode.
Contact ratings
Maximal 60Vdc 0.3A, 30Vdc 1A, 30Vac 0.5A, resistive load
Minimal permissible load: 1mA at 5Vdc
Isolation voltage
See chapter “
Dielectric Strength
”
Battery-low pre-warning contact
The battery-low pre-warning contact closes shortly before the battery is discharged.
Contact ratings
Maximal 60Vdc 0.3A, 30Vdc 1A, 30Vac 0.5A, resistive load
Minimal permissible load: 1mA at 5Vdc
Isolation voltage
See chapter “
Dielectric Strength
”
Replace Battery Relay Contact
The contact is closed when one of the battery qualities tests of at least one battery reports a negative result.
To reset the “replace battery” signal, cycle the input power
. The battery that has failed is indicated by the green LED which is off. The
battery should be replaced as soon as possible.
Contact ratings
Maximal 60Vdc 0.3A, 30Vdc 1A, 30Vac 0.5A, resistive load
Minimal permissible load: 1mA at 5Vdc
Isolation voltage
See chapter “
Dielectric Strength
”
