Siemens TV Converter Box G120 User Manual

Page of 147
 
 
 
 
 
 
 
    
Automation and Drives - SCE 
 
 
 
 
T I A  Training Document
 
Page 74 of 147 
 Module  
 
     H01 
Issued: 02/2008 
  Frequency Converter SINAMICS G120 on PROFIBUS DP and PROFINET 
Preface         Notes         Startup with PROFIBUS         Startup with PROFINET         Program Example 
 
3.6 Exercises 
 
1.  Changing the start and the braking behavior of the motor 
Change the parameters of the SINAMICS G120 in a way that the effective acceleration time to a 
maximum of 50Hz amounts to 18 seconds. The effective deceleration time of 50Hz to 0Hz is to 
amount to 12 seconds. When accelerating and decelerating the motor, acceleration and  
deceleration is to take place with a rounding time of 3 seconds each.  
You can read the actual frequency off the converter’s display and in this way recognize the motor’s 
approach behavior and braking behavior. Check the correctness of your parameter inputs with a 
stop  watch. 
The motor potentiometer setpoint is to be accelerated to 25Hz with the BOP.  If you then stop the 
motor with the BOP, you can observe the deceleration ramp, and stop it. 
 
2.  Controlling the converter by means of the digital inputs DIN1 to DIN3 
Change the parameters of the SINAMICS G120 in a way that the motor can be started by means of 
the digital inputs DIN1 to DIN3. The fixed frequency 1 is set to 25Hz. By means of the digital inputs  
DIN2 and DIN3, the respective fixed frequencies 2 and 3 can be connected. DIN2 = 15Hz, DIN3 = 
10Hz. If several inputs are enabled, the frequency value is totaled. The acceleration time to 50Hz 
maximum is to amount to 9.7s, the deceleration time 7.8s. This includes a rounding time of 3.6s. 
Check the correctness of your parameter inputs at the indication on the converter’s display, and by 
using a stop watch. 
 
3.  Speed Control via Analog Value  
Change the parameters of the SINAMICS G120 in a way that the speed of the motor can be 
specified by means of a voltage of from 0V to 10V at the converter’s analog input.  Starting and 
stopping the motor as well as reversal and the jog function are to be performed with the operator 
panel. The acceleration time to a maximum of 50Hz is to amount to 11.3s.  The deceleration time 
amounts to 6.5s. The motor is to be accelerated and slowed down without rounding time. Check the 
correctness of your parameter inputs at the indication on the converter’s display, and by using a stop  
watch. 
 
Note: 
As you do the exercises, use the software STARTER: For each exercise, set up a project, test and 
save it by using the commissioning wizard. 
If you need additional information about the individual parameters, refer to Online Help, or the 
function charts and the parameter descriptions in the List Manual.