Basic Principles of Positioning
2-2
FM 353 Stepper Drive Positioning Module
6ES7 353-1AH01-8BG0
Structure of a positioning circuit
Figure 2-2 show the structure of a position control circuit with FM 353 and stepper
motor.
Power section
Safety de-
vice
M
Power grid
Movement
Mechanical transmis-
sion elements
CPU
FM 353
“Parameterize FM 353”
Parameterize
PG
EMERG. STOP
Drive port
Safety device
Motor
Fig. 2-2 Setup of positioning with stepper motor (example)
FM 353
The FM 353 generates the following for the power section:
S Control frequency
S Direction signal
S Special control signals
Power section
The power section processes the control signals and supplies power to the motor.
Motor
The motor is connected, either directly or by way of mechanical transmission ele-
ments, to the machine component to be moved.
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