Development of a wavelet-based algorithm to detect and determine ...

2.3. INTERFACES 8
For adaptation to the corresponding process signals, various acquisition units are avail-
able.
VCDAU (Voltage/Current Data Acquisition Unit)
[8 analog (4 x voltage / 4 x current) and 16 binary inputs]
The unit is used to record current / voltage and binary inputs. Typical applications
are the monitoring of feeders or a transformer panel. The calculated measurements are
derived from the input current and voltage.
CDAU (Current Data Acquisition Unit)
[8 analog (8 x current) and 16 binary inputs]
The unit is used to record current and binary inputs. A typical application is the record-
ing of two feeders.
VDAU (Voltage Data Acquisition Unit)
[8 analog (8 x voltage) and 16 binary inputs]
The unit is used to record voltage and binary inputs. A typical application is the record-
ing of busbar voltages.
BDAU (Binary Data Acquisition Unit)
[32 binary inputs]
This unit is used whenever 16 binary inputs per analog acquisition module are insuffi-
cient. This allows the user, for example to combine 8 analog and 48 binary inputs.
DDAU (DC Data Acquisition Unit)
[8 analog (8 x process measurands) and 16 binary inputs]
The unit is used to record process measurements, such as 4 to 20 mA, or DC voltages,
such as 10 V DC. In conjunction with a transducer, voltages of up to 400 V can be pro-