Table of contents
Converter with the control units CU240D-2
Operating Instructions, 04/2018, FW V4.9 SP10, A5E34262100B AF
7
6.8
Motor holding brake .............................................................................................................. 141
6.9
Free function blocks .............................................................................................................. 145
6.9.1
Overview ............................................................................................................................... 145
6.9.2
Further information ................................................................................................................ 146
6.10
Selecting physical units......................................................................................................... 146
6.10.1
Motor standard ...................................................................................................................... 146
6.10.2
System of units ..................................................................................................................... 146
6.10.3
Technological unit of the technology controller .................................................................... 148
6.10.4
Setting the system of units and technology unit ................................................................... 148
6.11
Safe Torque Off (STO) safety function ................................................................................. 149
6.11.1
Function description .............................................................................................................. 150
6.11.2
Precondition for using STO ................................................................................................... 152
6.11.3
Commissioning STO ............................................................................................................. 152
6.11.3.1
Commissioning tools ............................................................................................................. 152
6.11.3.2
Safety functions password .................................................................................................... 152
6.11.3.3
Configuring a safety function ................................................................................................ 154
6.11.3.4
Interconnecting the "STO active" signal ............................................................................... 155
6.11.3.5
Setting the filter for fail-safe digital inputs ............................................................................. 156
6.11.3.6
Setting the forced checking procedure (test stop) ................................................................ 158
6.11.3.7
Acceptance - completion of commissioning.......................................................................... 162
6.11.3.8
Reduced acceptance test after function expansions ............................................................ 163
6.12
Setpoints ............................................................................................................................... 163
6.12.1
Overview ............................................................................................................................... 163
6.12.2
Analog input as setpoint source ............................................................................................ 165
6.12.3
Specifying the setpoint via the fieldbus................................................................................. 167
6.12.4
Motorized potentiometer as setpoint source ......................................................................... 169
6.12.5
Fixed speed setpoint as setpoint source .............................................................................. 172
6.13
Setpoint calculation ............................................................................................................... 175
6.13.1
Overview ............................................................................................................................... 175
6.13.2
Invert setpoint ....................................................................................................................... 177
6.13.3
Inhibit direction of rotation ..................................................................................................... 178
6.13.4
Skip frequency bands and minimum speed .......................................................................... 179
6.13.5
Speed limitation .................................................................................................................... 181
6.13.6
Ramp-function generator ...................................................................................................... 182
6.14
PID technology controller ...................................................................................................... 186
6.15
Motor control ......................................................................................................................... 190
6.15.1
V/f control .............................................................................................................................. 191
6.15.1.1
Characteristics of U/f control ................................................................................................. 192
6.15.1.2
Selecting the U/f characteristic ............................................................................................. 193
6.15.1.3
Optimizing motor starting ...................................................................................................... 195
6.15.2
Vector control with speed controller ...................................................................................... 197
6.15.2.1
Structure of the vector control ............................................................................................... 197
6.15.2.2
Checking the encoder signal ................................................................................................ 199
6.15.2.3
Optimizing the speed controller ............................................................................................ 199
6.15.2.4
Advanced settings ................................................................................................................. 202
6.15.2.5
Friction characteristic ............................................................................................................ 205
6.15.2.6
Moment of inertia estimator .................................................................................................. 207
6.15.2.7
Pole position identification .................................................................................................... 213
6.15.3
Torque control ....................................................................................................................... 214