Manual
1 Technical Description
1.5 Functional Description
1.5.8 Complex Functions (Arithmetic blocks c, d, h)
SIPART DR24 6DR2410
C79000-G7476-C153-03
87
must be satisfied. Otherwise the controller outputs positioning increments although the
control deviation has reached the smallest possible value due to the finite resolution. For
setting AH, see section Response threshold AH.
- external position feedback
The position control circuit is optimized with the online parameter tY. The same relation-
ships apply as in the S--controller with internal position feedback whereby the dynamic of
the position control circuit (non--linearities, follow--up) is added to the criteria of the pro-
cessability of the positioning increments by the actuator. It will usually be necessary to
select tY and the resulting response thresholds smaller than in the S--controller with inter-
nal position feedback for the above mentioned reasons.
The position control circuit is optimized in the tracking mode, the manipulated variable
changes are generated by switching over from manual to tracking mode. In addition con-
nect the position increment outputs
Δ
y with L12, L13 for example and display YR and
xdS on the displays. Occupy YN with a constant or freely switchable linear parameter
depending on the desired optimization point, apply the control signal H to high and the
control signal N to a key. Set approx.
5 % deviation from the tracking variable with the
YR manipulated variable display in manual mode and then switch over to tracking mode.
The position control circuit now runs to the set tracking variable. Observe the run--in on
the xdS display or the
Δ
y LEDs. During manual mode, the xdS display shows 0, during
the tracking mode, the manual manipulated variable is tracked to the manipulated track-
ing variable so that a deviation needs to be set again for re--excitement in manual mode.
In the case of unlinearity in the position control circuit, the optimization must take place in
the range of greatest slope.
- Set tA and tE so that the actuating drive can
just
process the positioning increments
(see S--controller with internal feedback).
- If filtering is provided: Set the filter of the y
R
input to 0.01 Ty (real actuating time of the
drive).
- Increase tY until the position control circuit overshoots by switching over to the track-
ing mode (monitor counterpulse through the
Δ
y-LEDs (e.g. L12, L13) in the xds dis-
play.
- Reduce tY slightly again until the position control circuit is calm.
D
Automatic setting of the control parameters by the adaptation procedure
- Preconditions for operating the adaptation:
A preparation input AV (h*.01) must be switched with a High signal at only one of the de-
fined and positioned controllers. This defines the controller to be adapted.
The x--input (h*.02) must be switched with the controlled variable. In S--controllers with
external position feedback the fed back manipulated variable YR (h*.16) must be applied
additionally to be able to enter the actuating value step. In S--controllers with internal
position feedback the value of the step addition is determined from tY.
The controller must be set to manual. The following parameters tU, dPv, dy must be set
accordingly (see also chapter 3.3.2, page 138). The output AL (adaptation in progress)
can be used to switch over displays to values of interest for example during adaptation.
The data source AdAP can be switched in FCon for displaying the adaptation status, e.g.
with L3.
Summary of Contents for 6DR2410
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