Siemens SINUMERIK 840D sl Manual de equipamiento - Página 36

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Technical specifications

7.2 Secondary electrical conditions

Shielded signal cables

• For safe and fault-free operation of the system, the specified cables must be used.

• For digital signal transmission, the shield must have a conductive connection at both sides

of the housing.

Cable definition

Definition:

• Signal cables (example)

– Data cables (Ethernet, PROFIBUS, sensor cables, etc.)

– Digital I/Os

– Cables for safety functions (emergency stop, enabling)

• Power cables (example)

– Low-voltage supply lines (230 VAC, +24 VDC, etc.)

– Motor cables

Rules for routing cables

In order to achieve the greatest possible EMC compatibility for the complete system (control,

power unit, machine), the following EMC measures must be carefully observed:

• If necessary, signal and power cables may cross one another (if possible at an angle of 90°),

but must never be laid close or parallel to one another.

• Only use cables approved by SIEMENS for the signal lines from and to the Control Unit.

• Signal cables must not be routed close to strong external magnetic fields (e.g. motors and

transformers).

• If signal lines cannot be routed a sufficient distance away from other cables, they must be

installed in grounded cable ducts (metal).

• The operator panel fronts, MCPs, MPPs, and full keyboards must be installed in metallically

enclosed EMC-compatible housings.

Note

For further information on interference suppression measures and the connection of

shielded cables, please refer to the EMC Installation Guide.

7.2.4

EMC limit values in South Korea

Operator panel front: OP 010S

Equipment Manual, 12/2022, A5E50751046B AA