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7.9 Analog retransmission
The analog retransmission is available on the
UREG200-x-x-3 as a 0/4...20mA interface.
Analog retransmission settings
In the Setup menu, set the parameter FUNC = FULL.
Select the desired signal type under CONN:
4-
20 = 4…20mA analog output
0-
20 = 0…20mA analog output
The voltage variants are currently not yet available!
With the parameter AOFN (analog output function) you can
select which value you want to transmit, e.g. to a control
system. The choice is, PV1, PV2, PV1-PV2, PV2-PV1, SV, MV1, MV2 and PV-SV
(see also table 1.4). The parameters AOLO, value at which the lower signal should
be present (0 or 4 mA) and AOHI, value of the 20mA signal, must be set according to
the application.
Scaling of the analog retransmission
AOLO and AOHI serve for scaling the output signal of the LOW signal level
„SL“ (E.g.
4mA) and the HIGH signal level "SH" (e.g. 20mA). The analog signal "AOS" is then
corresponding to the analog output value "AOV". See on picture.
Analog retransfer
Formulas:
𝐴𝑂𝑆 = 𝑆𝐿 + (𝐴𝑂𝑉 − 𝐴𝑂𝐿𝑂)
𝑆𝐻− 𝑆𝐿
𝐴𝑂𝐻𝐼−𝐴𝑂𝐿𝑂
𝐴𝑂𝑉 = 𝐴𝑂𝐿𝑂 + (𝐴𝑂𝑆 − 𝑆𝐿)
𝐴𝑂𝐻𝐼−𝐴𝑂𝐿𝑂
𝑆𝐻−𝑆𝐿
Examples:
The analog retransmission is used to transmit
the difference between PV1 and PV2. 4mA should
correspond to -100 and 20mA to +100.
Note:
AOHI ≠ AOLO
AOHI > AOLO
Linear increasing
Output
AOHI < AOLO
Linear falling
Output
Setting
Connection
