UPSI-1208DPx
Revision 2-0
9
B Introduction and description
Read carefully before initial operation !
This manual shall help the user to get familiar with the product and its components and features. It shall pro-
vide information as accurately and completely as possible.
The manual as well as all documents has to be read and followed strictly before installation. Otherwise in cer-
tain situations warranty and guarantee can be cancelled partly or completely. Any liability on the part of Bicker
Elektronik is excluded for possible existing errors as well as non-compliance with the instructions for use and
installation.
B1 Description of the product and its functions
The UPSI-1208DP2 and UPSI-1208DP3 (hereinafter also called UPS) are DC /
DC UPS systems with numerous
digital features and high performance. The UPS combines the UPSI-1208 with an integrated energy storage:
The UPSI-1208DP2 uses an energy storage with supercap (also EDLCs) technology. The UPSI-1208DP3 uses an
energy storage with LiFePO4 technology. The primary use of the UPS is to secure the supply during power
failures and/or voltage fluctuations. The application which should be protected is connected to the output of
the UPS.
The UPS requires a rated dimensioned power supply of 12 V DC at the input. After the input voltage is applied,
the UPS works in normal mode automatically. The input voltage is passed through to the output and the
integrated energy storage device is charged simultaneously. The charging current depends dynamically on
the load current at the UPS output. The green status LED lights up continuously when the UPS is in this state.
In the event of a voltage drop or a voltage fluctuation of the input voltage (below undervoltage limit),
the UPS is switched to battery mode (also backup mode). In this state, the application at the UPS output
is supplied via the energy storage device. The backup time (also buffer time) depends on the used ener-
gy storage, the value of the output current and the software settings of the UPS. An important feature
is that the output voltage in battery mode is always regulated to 12 V DC and does not decrease as the
voltage of the energy storage device drops. If the UPS operates in battery mode, the status LED is slowly fla-
shing (1 Hz flashing). When the UPSI-1208DP3 (with LiFePO4 battery) is used and it is discharged completely in
battery mode, the recharging has to happen as soon as possible.
When the input voltage returns, the UPS is automatically switched back to normal mode and charging of the
energy storage device is continued.
The UPS can also be used for user-initiated shutdowns of the supply voltage or cycles. Application examples
are the replacement of larger batteries in vehicles in which the electronics should continue to be supplied, the
opening and closing of safety valves after a malfunction or the shutdown of a system
