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USEFUL INFO
The transducer is able to retransmit the measured current/power/energy
according to the direction of the current flowing in the primary/secondary
of the connected current transformer (if connected); see the figures
below:
It is very important to respect the polarity of the measuring inputs,
otherwise the analogue outputs will not work properly.
A wrong connection of the current inputs will not allow the 0 to 20mA
/ 0 to 10V output to retransmit any signal.
Anyway it is possible to measure and retransmit currents/powers in
accordance with their flowing direction using the "Lo.A/Hi.A" and "Lo.E/
Hi.E" parameters properly.
For example, it is necessary to measure a power up to 100kW taking into
consideration that it can be consumed or generated by the system:
Example 9:
If the output signal is 0-20mA, the scaling parameters can be set as
follows:
"Lo.E" must be 0(kW) and "Hi.E" must be 100(kW), therefore "Lo.A" is
50.0(%) (10mA) and "Hi.A" is 99.9(%) (20mA).
When the power is –100kW (generated power) the output is 0mA, when
it is "0" the output current is 10mA and when the power is 100kW
(consumed power) the output current is 20mA.
Example 10: if the output signal is ±10VDC, the scaling parameters can
be set as:
"Lo.E" = –100(kW) and "Hi.E" = 100(kW), therefore "Lo.A" must be 0(%)
0V and "Hi.A" must be 99.9(%) (+10VCC), that means when the power
is –100kW the output is –10V, when it is "0", the output is 0V and when
the power is 100kW the output voltage is +10VCC.