Siemens MICROMASTER 420 Operating Manual page 25

Issue 04/04
6.2.15.7 PID controller
BI: Enable PID controller
P2200 =...
PID mode Allows user to enable/disable the PID controller. Setting to 1 enables the PID
closed-loop controller. Setting 1 automatically disables normal ramp times set in P1120 and
P1121 and the normal frequency setpoints.
CI: PID setpoint
P2253 =...
Defines setpoint source for PID setpoint input.
CI: PID trim source
P2254 =...
Selects trim source for PID setpoint. This signal is multiplied by the trim gain and added to
the PID setpoint.
Ramp-up time for PID setpoint
P2257 =...
Sets the ramp-up time for the PID setpoint.
Ramp-down time for PID setpoint
P2258 =...
Sets ramp-down time for PID setpoint.
CI: PID feedback
P2264 =...
Selects the source of the PID feedback signal.
Max. value for PID feedback
P2267 =...
Sets the upper limit for the value of the feedback signal in [%]..
Min. value for PID feedback
P2268 =...
Sets lower limit for value of feedback signal in [%]..
PID proportional gain
P2280 =...
Allows user to set proportional gain for PID controller.
PID integral time
P2285 =...
Sets integral time constant for PID controller.
PID output upper limit
P2291 =...
Sets upper limit for PID controller output in [%].
PID output lower limit
P2292 =...
Sets lower limit for the PID controller output in [%].
PID
MOP
ADC
PID
FF
USS
BOP link
USS
COM link
CB
COM link
Example:
Parameter
P2200
P2253
P2264
P2267
P2268
P2280
P2285
P2291
P2292
MICROMASTER 420
Compact Operating Manual
P2254
PID PID
P2253
SUM RFG
P2267
PID
P2264
PT1
P2265 P2268
P2200
Parameter text
BI: Enable PID controller
CI: PID setpoint
CI: PID feedback
Max. PID feedback
Min. PID feedback
PID proportional gain
PID integral time
PID output upper limit
PID output lower limit
P2291
PID
PID
PT1
−
∆
P2292
PID
PID
SCL
P2271
Example
P2200 = 1.0 PID controller active
P2253 = 2224 PID-FF1
P2264 = 755 ADC
P2267 Adapt to the application
P2268 Adapt to the application
P2280 Determined by optimizing
P2285 Determined by optimizing
P2291 Adapt to the application
P2292 Adapt to the application
6 Commissioning
0.0
0.0
0.0
1.00 s
1.00 s
755.0
100.00 %
0.00 %
3.000
0.000 s
100.00 %
0.00 %
0
Motor
control
1
PID
Output
25