Siemens Sinamics G120 CU240S DP - Page 6

Table of contents
Frequency inverter
6 Operating Instructions, 08.10. 2008, t.b.d.
4.5.4 Commissioning the application ................................................................................................... 70
4.6 Commissioning with the operator panel...................................................................................... 71
4.6.1 Function of the Basic Operator Panel......................................................................................... 71
4.6.2 BOP controls and displays.......................................................................................................... 72
4.6.3 Parameterization with the BOP (two examples) ......................................................................... 73
4.6.4 Commissioning steps .................................................................................................................. 74
4.6.5 Commissioning V/f control .......................................................................................................... 74
4.7 Data backup with the operator panel and memory card ............................................................. 77
4.7.1 Saving and transferring data using the BOP............................................................................... 77
4.7.2 Saving and transferring data using the MMC.............................................................................. 78
5 Functions................................................................................................................................................. 81
5.1 Overview of inverter functions..................................................................................................... 81
5.2 Inverter control ............................................................................................................................ 83
5.2.1 Frequency inverter control using digital inputs (two/three-wire control) ..................................... 83
5.2.2 Two-wire control, method 1......................................................................................................... 86
5.2.3 Two-wire control, method 2......................................................................................................... 87
5.2.4 Two-wire control, method 3......................................................................................................... 88
5.2.5 Three-wire control, method 1 ...................................................................................................... 89
5.2.6 Three-wire control, method 2 ...................................................................................................... 91
5.3 Command sources...................................................................................................................... 93
5.3.1 Selecting command sources....................................................................................................... 93
5.3.2 Assigning functions to digital inputs ............................................................................................ 94
5.3.3 Controlling the motor via the fieldbus.......................................................................................... 95
5.4 Setpoint sources ......................................................................................................................... 96
5.4.1 Selecting frequency setpoint sources ......................................................................................... 96
5.4.2 Using analog inputs as a setpoint source ................................................................................... 97
5.4.3 Using a motorized potentiometer as a setpoint source............................................................... 98
5.4.4 Using the fixed frequency as a setpoint source ...........
............................................................... 99
5.4.5 Running the motor in jog mode (JOG function) ........................................................................ 100
5.4.6 Specifying the motor speed via the fieldbus ............................................................................. 101
5.5 Changing over the command data sets (manual, automatic) ................................................... 102
5.6 Setpoint preparation.................................................................................................................. 105
5.6.1 Minimum frequency and maximum frequency .......................................................................... 105
5.6.2 Parameterizing the ramp-function generator ............................................................................ 106
5.7 Closed-loop control ................................................................................................................... 108
5.7.1 V/f control .................................................................................................................................. 108
5.7.1.1 Typical applications for V/f control ............................................................................................ 108
5.7.1.2 V/f control with linear characteristic .......................................................................................... 109
5.7.1.3 V/f control with parabolic characteristic..................................................................................... 110
5.7.1.4 Additional characteristics for the V/f control.............................................................................. 111
5.7.2 Vector control ............................................................................................................................ 112
5.7.2.1 Typical applications for vector control....................................................................................... 112
5.7.2.2 Commissioning vector control................................................................................................... 113
5.7.2.3 Torque control ........................................................................................................................... 114
5.7.2.4 Using a speed encoder ............................................................................................................. 115
5.8 Motor and inverter protection .................................................................................................... 118
5.8.1 Overtemperature protection for the frequency inverter and motor............................................ 118
5.8.2 Overcurrent protection .............................................................................................................. 120
5.8.3 Limiting the maximum DC link voltage...................................................................................... 121
5.8.4 Load torque monitoring ............................................................................................................. 122