Siemens 6RA7086-6KS22

05.05 Function diagrams
SIEMENS AG 6RX1700-0AD76 8-93
SIMOREG DC Master Operating Instructions
Sheet B184 PI controller 5
87564321
Kp Tn
-1
*
Kp
1 sTn
0
0 1
0
0
1
1
X
Y
U530 (0)
K
U533 (0)
K
U542 (1)
K
U536 (1)
K
K
U531 (0)
B
U532 (0)
B
U538 (1)
K
U534 (1)
K
T1
B B K B B B
264
K9340
U535.05 (0 ms)
.05
.05
5
.05 .05 .15 .15 .05 .15 .25
.35 .45
U539.05
(3,000 s)
U537.05
(3,00)
U540.05 (1) U541.05 (1)
.05
.05
K9341 K9342
U543.05
(100,0)
K9346 K9345
K9343
.05
B9664
(K9345)
U545.05
(100,0)
U544 (9346)
K9344
K9347
B9654
.05
B9674
(K9347)
- B184 -
PI-controller
PI-controller
Transfer function: 1 1 + sTn G(s) = --------- * Kp * --------- 1 + sT1 sTn
P component
I component
0 = Reset P
component
0 = Reset I
component
Positive limit
Negative limit
Controller at
output limit
Enable PI-controller
Filter time
Set PI-controller
1 = set I component <4> setting value for I component 1 = set output <2> 0 = disable PI-controller <1> 1 = freeze I component <5> setting value for PI-controller output
<1>
disable PI-controller:
P component = 0 I component = 0 output = 0 <2>
set output:
P component active I component = setting value - P component output = setting value <3>
freeze output:
P component active I component = frozen output - P component output is frozen <4>
set I component:
P component active I component = setting value output = P component + I component
1 = freeze output <3>
Priority: 1. disable PI-controller 2. set output 3. freeze output 4. set I component 5. freeze I component 6. freeze I component in pos. direction 7. freeze I component in neg. direction
1 = freeze I comp. in pos. direction <6> 1 = freeze I comp. in neg. direction <7>
PI-controller output
Stop I component in
pos.direction and limit
it to positive limit
Controller at pos.
output limit
Controller at neg.
output limit
<5> freeze I component: P component active I component is frozen output = P component + I component <6>
freeze I component in pos. direction:
P component active if controller input (X) is positive, I component is frozen output = P component + I component <7>
freeze I component in neg. direction:
P component active if controller input (X) is negative, I component is frozen output = P component + I component
Stop I component in
neg.direction and limit
it to negative limit