Siemens SIPART DR22 Manual page 82

1 Technical Description
1.5 Functional description of the structure switches
1.5.4 Controller types (S1, S49 to S53)
-- Main controller I
The main controller has the same structure with respect to the setpoint switching as the fol-
low-up controller (S1 = 3) with the difference that the external setpoint w
via the analog inputs as an absolute value. It is therefore a fixed setpoint controller with the
possibility of external sepoint preset via the SES or as an incremental setpoint via the control
signals Δw. Selection is made by S101. In computer coupling it is also possible here, in
the case of a computer failure (CB from 1 ! 0) to continue working with the last computer
setpoint (followed--up wi) or with the safety setpoint SH (selection by S51).
x-tracking in A-operation is posssible by selection with S50 = 1. The follow-up of the inactive
setpoint to the active setpoint can be switched off by S52 = 1.
-- Limiting controller II
The limiting controller has a normal fixed setpoint structure without x-tracking and setpoint
switching possibilities. The limiting setpoint Sb is set physically in the structuring mode oFPA
in the range from -10 to 110 % related to the display range dEII - dAII = 100 %.
-- Display and operating level switching
The display and operating level switching Controller I or Controller II takes place in all oper-
ating modes with the Shift key (12). The LEDs Controller I, Controller II signal which control-
ler is displayed and which controller is intervening.
The digital and analog x- and w-displays are switched. In the operating level II the Internal
key (2) is inactive, the LED Internal (1) is off and the Δw adjusting keys (6) are inactive.
The y-display, the Manual/Automatic key (9) and the Δy-adjusting keys (13) are
always permanently assigned to the common controller output and active in both
display levels.
Selection by
Shift key
Main controller I
Limiting controller II
Main controller I
Limiting controller II
1)
only if there is no x-tracking
2)
0.5 flashing rhythm 1:1
↗ adjustable
Table 1-16 Display level switching
Flashing of the Controller I/Controller II-LEDs signals that the displayed controller is not
identical with the active controller. Steady light signals that the displayed controller is not
identical with the active controller.
80
active controller
Main controller I
Main controller I
Limiting controller II
Limiting controller II
LED con- LED con- displayed
troller I troller II
1 0
2)
0.5
0
0
2)
0.5
1
0
Manual
cannot be preset
E
adjustable
is setpoint
1)
I
wi ↗
--
II
1)
wi ↗
I
--
II
SIPART DR22 6DR2210
C79000-G7476-C154-03