WL Circuit Breakers - Siemens

External CubicleBUS Modules
WL Circuit Breaker
A01: Network frequency
A02: Average value of the phase-to-phase
voltages
A03: Total active power
A04: Average value of the power factors
The scale for displaying the frequency must
range from 45Hz to 65Hz. This enables the
standard frequencies in countries where IEC
and UL standards apply to be displayed.
Example: 45Hz = 0 V/4mA and 65Hz =
10V/20mA.
The scalings of the other measured values
can be read in the appropriate switch
positions.
Switch Position “cosϕ”
The following measured values are output
in switch position “cosΦ”:
A01: Power factor cosϕL1
A02: Power factor cosϕL2
A03: Power factor cosϕL3
A04: Phase unbalance – current (%)
Figure
2-13
2/29
The analog channels are selected
using the Rotary Switch.
The power factors are displayed from
0.7 (leading) (= 0V/4mA) through 1
(= 5V/12mA) to 0.7 (lagging) (= 10
V/20mA). The phase unbalance of the three
currents is displayed from 0% (0V/4mA) to
50% (10V/20mA).
Note: Ensure that the polarity is correct
during connection.
Test Function
The test mode is started by pressing the
“TEST” key and indicated by the yellow
DEVICE LED. Although the measured values
continue to be updated in the test mode,
they are not output at their respective
channels.
• The test mode is started by pressing the
“TEST” key.
• Pressing the “TEST” key again selects
output 1, which is indicated by LED A01.
The test signal is output. For currents,
voltages, and power rating values, this is
equivalent to the full-scale value, with
cosϕ 1 and with a frequency of 55Hz.
Technical data for the analog output module
Table
2-21
• Pressing the key again selects output 2,
which is indicated by LED A02. This
automatically deletes the value at output
1 and sets the value at output 2.
• By repeating the above steps, the output
and scaling of all four outputs can be
checked one after the other.
• Selecting output A04 and pressing the
“TEST” key activates all four LEDs, but
does not activate an output. Pressing
the key again selects output 1 again.
• If the “TEST” key is not pressed within
30 seconds after an output has been
selected, the system exits the test mode
automatically and returns to the standard
operating mode. The values, which are
constantly updated in the background,
are then updated at the outputs again.
Operating voltage min./max. 19.2V / 28.8V
Operating current min./max. 63mA / 150mA
Min. resistance connected to voltage output 20kΩ
Resistance range for connection to current output - min./max. 20Ω / 250Ω
Max. no. of analog output modules on one WL Circuit Breaker 2
Power loss min./max. 0.74W / 5.4W
Dimensions 70mm / 86mm / 95mm
Weight 0.223kg
Temperature range -20°C / 60°C
This table provides technical data for the analog output module on the CubicleBUS.
WL PROFIBUS/MODBUS Communication and Electronic Accessories