Simovert Masterdrives Motion Control; Adapting The Pulse Frequency - Siemens SIMOVERT MASTERDRIVES MC Series Product Information

Commissioning
4.3 Creating a STEP 7 project

SIMOVERT MASTERDRIVES Motion Control

Parameter: P340 (pulse frequency)
Meaning:
The pulse frequency must be matched to the DP cycle so that the converter/inverter can be
synchronized with this. Frequencies from 5 to 8 kHz can be set.
The following value should be set for the pulse frequency:
P340 = 2
This results in the following relationships between DP cycle time, pulse frequency and task:
DP cycle time
1.5 ms
2 ms
3 ms
This means, for a DP cycle of e.g. 3 ms, the pulse frequency P340 = 5.3 kHz. In this case,
the restriction for pulse frequencies greater than 5.0 kHz should be taken into account as
described under Chapter 2.2 (Section, Motion control)!
In the window for the CPU 317T, the pre-set value of 5.0 kHz is overwritten with 5.3 kHz in
order to implement a DP cycle of 3 ms. Now, 3.019 ms is displayed as basis time:
Figure 4-9
22
/DP cycle time
task

Adapting the pulse frequency

Pulse frequency
5.3 kHz
8 kHz
5.3 kHz
Connecting SIMOVERT MASTERDRIVES MC to the Technology-CPU
Task
3 (only possible with Motion
Control Performance 2)
4
4
Product Information, 03/2008, A5E00272072-05