6 Commissioning
6.6 Manual setting of the control parameters
Manual
SIPART DR21
C73000-B7476-C143-08
189
6.6
Manual setting of the control parameters
without knowledge of the plant behavior
The control parameters for optimum control of the system are not yet known in this case. To
keep the control circuit stable in all cases, the following factory settings must be made:
Proportional action factor
Kp
=
0.1
Integral action time
Tn
=
9984 s
Derivative action time
Tv
=
oFF
D
P-controller (control signal P = high)
- Set the desired setpoint and set the control difference to zero in manual operation.
- The operating point necessary for the control difference is set automatically in manual
operation at Yo=AUto (factory setting). The operating point can also be set manually by
setting the online-parameter y
o
to the desired operating point.
- Switch to automatic operation.
- Increase Kp slowly until the control loop tends to oscillate due to slight setpoint changes.
- Reduce Kp slightly until the oscillations disappear.
D
PD-controller (control signal P = high)
- Set the desired setpoint and set the control difference to zero in manual operation.
- The operating point necessary for the control difference is set automatically in manual
operation at Yo = AUto (factory setting). The operating point can also be set manually
by setting the online-parameter y
o
to the desired operating point.
- Switch to automatic operation.
- Increase Kp slowly until the control loop tends to oscillate due to slight setpoint changes.
- Switch Tv from oFF to 1 s.
- Increase Tv until the oscillations disappear.
- Increase Kp slowly until oscillations reappear.
- Repeat the setting according to the two previous steps until the oscillations can no longer
be eliminated.
- Reduce Tv and Kp slightly until the oscillations are eliminated.
Summary of Contents for SIPART DR21
Page 1: ...SIPART DR21 C73000 B7476 C143 08 1 SIPART DR21 6DR 210 Edition 08 2010 Manual ...
Page 2: ...SIPART DR21 C73000 B7476 C143 08 2 ...
Page 148: ...4 Installation 4 2 Electrical Connection Manual 148 SIPART DR21 C73000 B7476 C143 08 ...
Page 180: ...5 Operation 5 5 CPU self diagnostics Manual 180 SIPART DR21 C73000 B7476 C143 08 ...
Page 242: ...Manual 242 SIPART DR21 C73000 B7476 C143 07 ...