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© Siemens AG, 2006. All rights reserved
SINUMERIK 840D Configuring Manual NCU (PHD) – 03.06 Edition
Connection Conditions
2.1 Secondary electrical conditions
The controller is tested for compliance with the environmental conditions speci-
fied below. Fault-free operation is only ensured if:
These environmental conditions are maintained when storing, transporting
and operating the equipment,
Original components and spare parts are used. This applies in particular to
the use of specified cables and plug connectors,
The equipment has been correctly mounted/installed.
!
Danger
The equipment may not be commissioned until it has been clearly identified
that the machine in which the controller is installed is in full conformance with
the specifications in EC Machinery Directive 98/37/EC.
The connection conditions must be carefully maintained for the complete sys-
tem. Please contact your local Siemens office or representative for any assis-
tance.
Compliance with
the connection
conditions
Assistance and
support
2
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