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For a set point poti (e.g. 5-10 K
⍀
) 5V supply voltage can be taken from terminal X5.2.5 (Ri = 220
⍀
,
short-circuit-proof).
SET POINT CONTROL CHARACTERISTICS
The set point control characteristic (Fig. 1) of Thyro-P may be easily adapted for the control output
signal of the upstream process controller or automation system. All signals customary on the market
may be used.
The adaption is made by changing the starting and ending points of the control characteristic. Inver-
ted operation (ending value is smaller than the starting value in voltage or current) is also possible.
• Set point 3:
Set point of the superordinate system or PC via fibre optic connection (standard) X30, X31 or via
the optional bus interface.
• Set point 4:
Set point input (motor potentiometer function) via LBA or RS 232 from the superordinate system or
PC. Set point 4 is stored in case of mains failure.
EFFECTIVE TOTAL SET POINT VALUE
The algebraic addition of the results of set point (1,2) to set point 3 and 4 gives the (effective) total
set point value for the set point control characteristic as shown in the following figure.
FIG. 1 CONTROL CHARACTERISTIC FOR U CONTROL
FIG. 2
TOTAL
SET POINT