Siemens S5-135U/155U appendix Wiring of Programmable Controllers for EMC, Routing of Cables

Installation Guidelines

3.3Wiring of Programmable Controllers for EMC

The following section describes:

SRouting of cables within and outside cabinets

SEquipotential bonding between devices

SSingle and double-ended connection of cable shields

SChecklist for electromagnetically compatible installation

3.3.1Routing of Cables

This section covers the routing of bus, signal and supply lines. The purpose cable routing is to suppress crosstalk between cables laid in parallel.

Routing of Cables	For electromagnetically compatible routing of cables and lines, it is
Within and	expedient to subdivide the lines into the following line groups and lay the
Outside Cabinets	groups separately.

Group A

SShielded bus and data lines (for programmer, OP, SINEC L1, SINEC L2, printer, etc.)

SShielded analog lines

SUnshielded lines for DC voltage v 60 V

SUnshielded lines for AC voltage v 25 V

SCoaxial cables for monitors

Group B

SUnshielded lines for DC voltage > 60V and v 400V

SUnshielded lines for AC voltage > 25V and v 400V

Group C

SUnshielded lines for DC and AC voltage > 400V

Group D

SLines for SINEC H1

From the combination of individual groups in the following table, you can read off the conditions for laying the line groups.

Group A

Group B

Group C

Group D

Group A

À

￿

￿

￿

Group B

￿

À

￿

￿

Group C

￿

￿

À

￿

Group D

￿

￿

￿

À

3-12	System Manual
	C79000-G8576-C199-06