Siemens SIMATIC S7-1200 - Page 7

Table of contents
PID control
Function Manual, 03/2017, A5E35300227-AC
7
5.2.3 Simulating PID_3Step V2 with PLCSIM ................................................................................ 137
5.3 PID_3Step V1 ....................................................................................................................... 138
5.3.1 Configuring PID_3Step V1 .................................................................................................... 138
5.3.1.1 Basic settings V1 .................................................................................................................. 138
5.3.1.2 Process value settings V1 .................................................................................................... 143
5.3.1.3 V1 final controlling element setting ....................................................................................... 144
5.3.1.4 Advanced settings V1 ........................................................................................................... 147
5.3.2 Commissioning PID_3Step V1 .............................................................................................. 150
5.3.2.1 Commissioning V1 ................................................................................................................ 150
5.3.2.2 Pretuning V1 ......................................................................................................................... 151
5.3.2.3 Fine tuning V1 ....................................................................................................................... 152
5.3.2.4 Commissioning with manual PID parameters V1 ................................................................. 153
5.3.2.5 Measuring the motor transition time V1 ................................................................................ 154
5.3.3 Simulating PID_3Step V1 with PLCSIM ................................................................................ 156
6 Using PID_Temp ................................................................................................................................. 157
6.1 Technology object PID_Temp ............................................................................................... 157
6.2 Configuring PID_Temp.......................................................................................................... 158
6.2.1 Basic settings ........................................................................................................................ 158
6.2.1.1 Introduction ........................................................................................................................... 158
6.2.1.2 Controller type ....................................................................................................................... 159
6.2.1.3 Setpoint ................................................................................................................................. 159
6.2.1.4 Process value ....................................................................................................................... 160
6.2.1.5 Heating and cooling output value ......................................................................................... 160
6.2.1.6 Cascade ................................................................................................................................ 162
6.2.2 Process value settings .......................................................................................................... 163
6.2.2.1 Process value limits .............................................................................................................. 163
6.2.2.2 Process value scaling ........................................................................................................... 163
6.2.3 Output settings ...................................................................................................................... 164
6.2.3.1 Basic settings of output ......................................................................................................... 164
6.2.3.2 Output value limits and scaling ............................................................................................. 167
6.2.4 Advanced settings ................................................................................................................. 170
6.2.4.1 Process value monitoring ..................................................................................................... 170
6.2.4.2 PWM limits ............................................................................................................................ 171
6.2.4.3 PID parameters ..................................................................................................................... 174
6.3 Commissioning PID_Temp ................................................................................................... 181
6.3.1 Commissioning ..................................................................................................................... 181
6.3.2 Pretuning ............................................................................................................................... 182
6.3.3 Fine tuning ............................................................................................................................ 185
6.3.4 "Manual" mode ...................................................................................................................... 189
6.3.5 Substitute setpoint ................................................................................................................ 190
6.3.6 Cascade commissioning ....................................................................................................... 190
6.4 Cascade control with PID_Temp .......................................................................................... 191
6.4.1 Introduction ........................................................................................................................... 191
6.4.2 Program creation .................................................................................................................. 193
6.4.3 Configuration ......................................................................................................................... 195
6.4.4 Commissioning ..................................................................................................................... 197
6.4.5 Substitute setpoint ................................................................................................................ 198
6.4.6 Operating modes and fault response .................................................................................... 198