Siemens SIPART DR22 Manual page 115

Manual
As described above, the control signals yBL have priority over Si and H or N. Priority of
H or N can be selected via S61. All these operating modes have priority over automatic
operation.
Signaling of the switching states is made by the LEDs Manual (8) and y-external (10). If
manual operation is active or preselected (if the prioritized operating modes are active), the
Manual LED lights up. He = 1 (via control signal) is signaled by a flashing rhythm of 9.9
when Hi = 0 (via Manual/Automatic switch i.e. is in automatic operation). When switching the
control signal He from 1→0 automatic operation becomes active.
Follow-up (DDC), safety and blocking operation is signaled by the y-External LED. Flashing
rhythm 0.5 indicates that in manual operation priority over follow-up operation, manual
operation is active but follow-up operation is prepared and after switching to automatic
operation also becomes active.
-- Blocking of the manual/automatic switching (S64)
With S64 Manual/Automatic switching can be blocked in the operating modes only automatic
or only manual (see figure 1-16, page 37). The other operating modes are still possible. The
follow-up operation only if follow-up has priority over manual operation.
-- Manual mode in event of transmitter fault S63
With S63 it is possible to switch to manual mode when the transmitter group fault message
occurs (see chapter 1.5.1, page 22). Manual operation starts at S63=1 with the last y or at
S63 = 2 with the parameterized YS. In both cases the manual manipulated variable can be
adjusted with the Δy keys after switching.
-- Source and direction of effect of the y-display S67, S68
With S67 the y-display is switched to the different display sources or switched off. The
absolute manipulated variable y or the split range manipulated variables y
displayed in K-controllers or the position feedback message/command signal y
S-controllers. With S68 the display direction rising -- falling can be selected (see chapter
4.1).
-- Control system coupling via the serial interface
In addition to the DDC controller (S1 = 2) the SPC controller (S1 = 3) a complete parallel
process operation is possible in all controller types via the serial interface. The control
signals Int and Hi (via He
variables wi and yH can be written at S101≥2 via the serial interface so that switching from
internal to external setpoint and Automatic/Manual switching is possible in all controller
types. If the internal setpoint wi or the manual manipulated variable y
be changed by the SES or the adjusting keys on the front panel. Since the SES can only
adjust absolutely and not incrementally, it is advisable to use the setpoint ramp (tS) or the
dynamic manipulated variable with ty to avoid steps.
This parallel "front operation" via the serial interface can be locked at S64 = 3 via RC =
Int∨CB (see chapter 1.5.3). This locking facility for the operation via SES on the controller
front is only useful in the controller types fixed setpoint controller with a setpoint (S1 = 10)
and follow-up controller without Internal/External switching (S1 = 11) because in all other
controller types both the Internal key and the control signal CB have other additional
SIPART DR22 6DR2210
C79000-G7476-C154-03
at S64 = 3/4, see chapter 1.5.3, page 34) and the process
ES
1 Technical Description
1.5 Functional description of the structure switches
1.5.6 Controller output structures (S2, S61 to S68)
is active it can also
H
and y can be
1 2
via FE6 in
R
113