AEG ARE I2 Operations Instructions Page 20

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18
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 RS232 or fiber optic connection (standard) X30, X31
or via the optional bus interface.
Set point 4:
Set point input (motor potentiometer function) settings as for set point 3 but additionally via LBA-2.
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.
The prerequisite for a set point to influence the total set point value is that it must be enabled by
the set point Enable Register. Set point 1 and 2 can be linked using the following functions. The
result of this link is called set point (1,2).
Set point link
ADD Set point (1,2) = Set point 1 + Set point 2
IADD Set point (1,2) = Set point 1 - Set point 2
_Pro Set point (1,2) = Set point 1 *
Set point 2 [%]
100%
_IPro Set point (1,2) = Set point 1 * (1 -
Set point 2 [%]
)
100%
VALUE RANGE OF SET POINT (1,2)
For the link result of set point (1,2) the following value range applies:
0
m Set point (1,2) m Set point max (U
max
, I
max
, P
max
).
FIG. 2
TOTAL
SET POINT
Local operating and
display unit LBA-2 or RS232
Bus interface or
Fibre optic interface
Set point 4
Motorpoti function
Set point 3
REMOTE
Set point 1 *
Set point 2 *
Set point
Enable-
Register
ADD
Total
set point
Set point
(1, 2)
ADD
IADD
PRO
IPRO
1
2
4
8
* 0 - 5 Volt
0 - 10 Volt
0(4) - 20 mA
within these limits any linear
control characteristic is possible.
10
13
13
X5.1
M (5V)
M (5V)
ST_A ST_E
ST_A ST_E
X5.1
X5.2
11
X5.2
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