11.92 1 Prerequisites and Visual Inspection
1.1 Prerequisites
1 Prerequisites and Visual Inspection

1.1 Prerequisites

The following prerequisites must be fulfilled prior to initial start-up:
Electrical and mechanical installation of the machine must have been completed and the
axes prepared for operation.
The following points must be confirmed by the customer!
Customer PLC program operational and pretested.
Measuring system installed and wired as far as SINUMERIK.
Cables connected to the machine. Cable shields run to the control neutral point as per
Interface Description. Flexible earth wires installed. Earthing concept observed (inspect
carefully!).
Customer personnel support for work on the interface unit, work on the machine, machine
operation and customer produced PLC program.
Recommendation:
Prelimit travel ranges (greater clearance distances) by displacing the end stop
(EMERGENCY STOP cam).
The specified machine data is available.
Data carriers are available for checking machine specific functions.

1.2 Visual inspection

General remarks:
Refer to the "EMC Guidelines", Order No. 6FC 3987-7DB
These guidelines provide the following information:
Why are EMC guidelines necessary?
What external interference sources affect the control?
How can interference be prevented?
Practical examples for an interference free installation.
How should electronically endangered components (EEC) be handled?
How can an EMC problem be rectified?
What standards are relevant to EMC?
© Siemens AG 1992 All Rights Reserved 6FC5197- AA50 1–1
SINUMERIK 840C (IA)