Siemens SINAMICS G120 Operating Instructions Manual page 10
Low voltage inverters
built-in units with cu250s-2 control units and
encoder evaluation
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Also See for SINAMICS G120:
- List manual (1256 pages) ,
- Manual (732 pages) ,
- Operating instructions manual (550 pages)
Table of Contents
Table of contents
6.11
Limit position control............................................................................................................216
6.12
Switching over the drive control (command data set)..........................................................218
6.13
Motor holding brake.............................................................................................................220
6.14
Free function blocks.............................................................................................................224
6.14.1
Overview..............................................................................................................................224
6.14.2
Runtime groups and run sequence......................................................................................224
6.14.3
List of the free function blocks..............................................................................................225
6.14.4
Scaling.................................................................................................................................236
6.14.5
Activating free function block...............................................................................................237
6.14.6
Further information...............................................................................................................237
6.15
Selecting physical units........................................................................................................238
6.15.1
Motor standard.....................................................................................................................238
6.15.2
System of units.....................................................................................................................238
6.15.3
Technological unit of the technology controller....................................................................240
6.15.4
Setting the system of units and technology unit...................................................................240
6.16
Extended messages.............................................................................................................242
6.17
Safe Torque Off (STO) safety function.................................................................................244
6.17.1
Function description.............................................................................................................244
6.17.2
Commissioning STO............................................................................................................246
6.17.2.1
Safety functions password...................................................................................................246
6.17.2.2
Configuring a safety function................................................................................................248
6.17.2.3
Interconnecting the "STO active" signal...............................................................................249
6.17.2.4
Setting the filter for fail-safe digital inputs............................................................................250
6.17.2.5
Setting the forced checking procedure (test stop)................................................................252
6.17.2.6
Finalizing online commissioning...........................................................................................254
6.17.2.7
Checking the assignment of the digital inputs......................................................................255
6.17.2.8
Acceptance - completion of commissioning.........................................................................256
6.18
Setpoints..............................................................................................................................258
6.18.1
Overview..............................................................................................................................258
6.18.2
Analog input as setpoint source...........................................................................................260
6.18.3
Specifying the setpoint via the fieldbus................................................................................262
6.18.4
Motorized potentiometer as setpoint source........................................................................264
6.18.5
Fixed speed setpoint as setpoint source..............................................................................267
6.18.6
Pulse input as source of setpoint value................................................................................271
6.19
Setpoint calculation..............................................................................................................273
6.19.1
Overview..............................................................................................................................273
6.19.2
Invert setpoint.......................................................................................................................274
6.19.3
Inhibit direction of rotation....................................................................................................275
6.19.4
Skip frequency bands and minimum speed.........................................................................276
6.19.5
Speed limitation....................................................................................................................277
6.19.6
Ramp-function generator.....................................................................................................278
6.20
PID technology controller.....................................................................................................283
6.21
Motor control........................................................................................................................288
6.21.1
Reactor, filter and cable resistance at the inverter output....................................................288
6.21.2
V/f control.............................................................................................................................289
6.21.2.1
Characteristics of U/f control................................................................................................291
6.21.2.2
Optimizing motor starting.....................................................................................................294
8
Converter with the CU250S-2 Control Units
Operating Instructions, 04/2018, FW V4.7 SP10, A5E31759476B AG
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