Siemens SIMOVERT MASTERDRIVES Manual page 378

05.2006
Standard drive
(Standard telegram
1 and 2)
Siemens AG 6SE7087-6QX70 (Version AG)
SIMOVERT MASTERDRIVES
Application class 1:
In the simplest case the drive is controlled via a main setpoint (e. g.
speed setpoint) via PROFIBUS (Figure 1). The complete speed control
takes place in the drive controller. The automation device includes all the
technological functions for the automation process. PROFIBUS acts only
as transmission medium between the automation system and drive
controller. The normal cyclical data communication of the PROFIBUS-DP
is used (Data Exchange). This application is primarily used in the area of
classic drive technology (e.g. materials handling technology). A PLC is
used mainly as the automation system. Clock synchronism and cross
traffic on the bus system are not necessary for this application class.
Control word + main setpoint + ...
Drive
Speed open/closed
loop control
Encoder
M
(optional)
Fig. 8.2-28 Application class 1
Compendium Motion Control
Automation
Technology
Status word + main actual-value +
Drive
Speed open/closed
loop control
Encoder
M
(optional)
Communication / PROFIBUS
Drive
Speed open/closed
loop control
Encoder
M
(optional)
8.2-91