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PRESYS
⏐ Instruments
The output signal can be linearized configuring the LINEAR option. See the
graphic bellow:
The parameters LIN. 0 to LIN. 10 corresponds to the percentage of the output
signal full scale. These parameters are associated to the output indication by means of
the parameters PT. 0 to PT. 10.
Parameters PT. 0 to PT. 10 should be configured as percentage of the output
indication span.
Note: it is not necessary to set all the 11 parameters. The parameters considered for
linearization are the first (PT. X, LIN. X) points whose parameters PT. X are in
ascending order. Therefore, in a linearization of 5 points, one should configure
PT. 0 to PT. 4 and LIN. 0 to LIN. 4, besides setting parameter PT. 5 to 0.0% to
break the ascending order.
VAR – this parameter prevents the output signal from changing abruptly. It
determines the maximum rate that the signal can vary. When configured to 0.00%/s, it is
disabled and the output signal variation is no more restricted.
As an example of output configuration, suppose one dealing with a normally
opened valve, i.e., 4mA maintains the valve opened. Thus, the indication of 100% on the
display should refer to the maximum flow through the valve, which corresponds to the
instrument 4mA output. In this case, enter the following parameters in the OUTPUT
level.
PT. 0
LIN. 0
PT. 1
LIN. 1
PT. 2
ENG HIGH
ENG LOW
PT. DEC
Fig. 15 - Linearization of the Output Signal
0.0%
100.0%
100.0%
20.0%
0.0%
0.0
100.0
888.8
DCY-2058 and DCY-2059
Operation
Page 24
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