Operating Instructions
6.10 Drive control via P1..............................................................................................................249
6.11 Jogging.................................................................................................................................250
6.12 Switching over the drive control (command data set)..........................................................252
6.13 Free function blocks.............................................................................................................254
6.13.1 Overview..............................................................................................................................254
6.14 Physical units.......................................................................................................................255
6.14.1 Motor standard.....................................................................................................................255
6.14.2 System of units.....................................................................................................................255
6.14.3 Technological unit of the technology controller....................................................................257
6.14.4 Setting the system of units and technology unit...................................................................257
6.15 Setpoints..............................................................................................................................259
6.15.1 Analog input as setpoint source...........................................................................................260
6.15.2 Specifying the setpoint via the fieldbus................................................................................262
6.15.3 Motorized potentiometer as setpoint source........................................................................264
6.15.4 Fixed speed setpoint as setpoint source..............................................................................267
6.16 Setpoint calculation..............................................................................................................270
6.16.1 Overview..............................................................................................................................270
6.16.2 Invert setpoint.......................................................................................................................271
6.16.3 Enable direction of rotation..................................................................................................272
6.16.4 Skip frequency bands and minimum speed.........................................................................273
6.16.5 Speed limitation....................................................................................................................274
6.16.6 Ramp-function generator.....................................................................................................275
6.17 PID technology controller.....................................................................................................278
6.17.1 Autotuning the PID technology controller.............................................................................284
6.17.2 Adapting Kp and Tn.............................................................................................................287
6.18 Free technology controllers..................................................................................................289
6.19 Multi-zone control ................................................................................................................291
6.20 Cascade control...................................................................................................................295
6.21 Real time clock (RTC)..........................................................................................................300
6.22 Time switch (DTC)...............................................................................................................302
6.23 Motor control........................................................................................................................303
6.23.1 Reactor, filter and cable resistance at the inverter output....................................................303
6.23.2 V/f control.............................................................................................................................304
6.23.2.1 Characteristics of U/f control................................................................................................306
6.23.2.2 Optimizing motor starting.....................................................................................................309
6.23.2.3 Optimizing the motor startup for application class Standard Drive Control..........................311
6.23.3 Encoderless vector control...................................................................................................313
6.23.3.1 Structure of vector control without encoder (sensorless).....................................................313
6.23.3.2 Optimizing the speed controller............................................................................................315
6.24 Electrically braking the motor...............................................................................................318
6.24.1 DC braking...........................................................................................................................320
6.24.2 Compound braking...............................................................................................................323
6.24.3 Dynamic braking..................................................................................................................325
6.24.4 Braking with regenerative feedback to the line....................................................................327
Table of contents
Converter with the CU230P-2 Control Units
8 Operating Instructions, 04/2018, FW V4.7 SP10, A5E34257946B AF