4-1
FM 351 Positioning Function Module
EWA 4NEB 720 6001-02
Wiring the FM 351
It is essential for the safety of the system to install the switching elements
mentioned below and to adapt them to your system conditions.
EMERGENCY STOP switch enabling you to switch off the complete sys-
tem.
Start/finish limit switches which directly switch off the power controller.
Motor protecting switch to protect the motors.
Please also pay attention to the following chapters in the manual S7-300 Pro-
grammable Controller, Hardware and Installation:
Guideline for Handling Modules at Risk from Electrostatic Discharge
(ESD): Appendix D.
Planning the Electrical Installation: Chapter 4.
As a further source of information on the subject of EMC guidelines, we rec-
ommend the publication: Equipment for Machine Tools, EMC Guidelines for
WS/WF Techniques, Order No.: 6ZB5440-0QX01-0BA1.
You must observe the appropriate VDE guidelines when wiring the open-loop
positioning system.
Important Rules
Other Literature
Standards and
Regulations
4
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