Table of contents
SIMATIC ET 200pro FC-2 converter
Operating Instructions, 04/2018, FW V4.7 SP10, A5E34257324B AF
5
7.7.1
Description of functions......................................................................................................... 117
7.7.2
((Precondition for using STO)) .............................................................................................. 119
7.7.3
Commissioning STO ............................................................................................................. 119
7.7.3.1
Commissioning tool ............................................................................................................... 119
7.7.3.2
Safety functions password .................................................................................................... 120
7.7.3.3
Protection of the settings from unauthorized changes ......................................................... 120
7.7.3.4
Configuring safety functions ................................................................................................. 121
7.7.3.5
Interconnecting the "STO active" signal ............................................................................... 122
7.7.3.6
Setting the STO input signal ................................................................................................. 123
7.7.3.7
Setting the forced checking procedure (test stop) ................................................................ 124
7.7.3.8
Activate settings .................................................................................................................... 125
7.7.3.9
Approval - completing commissioning .................................................................................. 126
7.8
Setpoints ............................................................................................................................... 129
7.8.1
Overview ............................................................................................................................... 129
7.8.2
Specifying the setpoint via the fieldbus................................................................................. 131
7.8.3
Motorized potentiometer as setpoint source ......................................................................... 132
7.8.4
Fixed speed as setpoint source ............................................................................................ 136
7.9
Setpoint calculation ............................................................................................................... 138
7.9.1
Overview ............................................................................................................................... 138
7.9.2
Invert setpoint ....................................................................................................................... 139
7.9.3
Inhibit direction of rotation ..................................................................................................... 139
7.9.4
Skip frequency bands and minimum speed .......................................................................... 140
7.9.5
Speed limitation .................................................................................................................... 141
7.9.6
Ramp-function generator ...................................................................................................... 141
7.10
PID technology controller ...................................................................................................... 145
7.11
Motor control ......................................................................................................................... 150
7.11.1
V/f control .............................................................................................................................. 151
7.11.1.1
Characteristics of U/f control ................................................................................................. 152
7.11.1.2
Selecting the U/f characteristic ............................................................................................. 153
7.11.1.3
Optimizing motor starting ...................................................................................................... 154
7.11.2
Vector control ........................................................................................................................ 156
7.11.2.1
Structure of vector control without encoder (sensorless) ..................................................... 156
7.11.2.2
Select motor control .............................................................................................................. 157
7.11.2.3
Optimizing the speed controller ............................................................................................ 157
7.11.2.4
Friction characteristic ............................................................................................................ 159
7.11.2.5
Moment of inertia estimator .................................................................................................. 162
7.12
Braking the motor electrically ................................................................................................ 167
7.12.1
DC braking ............................................................................................................................ 167
7.12.2
Braking with regenerative feedback to the line ..................................................................... 171
7.13
Overcurrent protection .......................................................................................................... 172
7.14
Inverter protection using temperature monitoring ................................................................. 173
7.15
Motor temperature monitoring using a temperature sensor ................................................. 176
7.16
Motor protection by calculating the temperature .................................................................. 180
7.17
Breakdown protection ........................................................................................................... 182
7.18
Efficiency optimization .......................................................................................................... 183
7.19
PROFIenergy profile for PROFINET ..................................................................................... 186