Installation and Commissioning

6.6.2Connectors of the Signaling Contact and Grounding Strap (X2)

The signaling contact is connected by contacts MK1 and MK2 on the 4-pin connec- tor to the rear terminal block on the PS module.

X1

X2

MK2 GND M3 MK1

Figure 6-10 Pin assignment of connector X2

By inserting a strap between protective earth P and M3, the SCALANCE X414-3E switch can be operated with grounded reference potential.

When the device ships, no strap is fitted (non-grounded reference potential).

Conn. 2

MK1

Floating signaling contact relay connector 1

 

 

 

 

M3

Ground

 

 

 

 

GND

Protective earth

 

 

 

 

MK2

Floating signaling contact relay connector 2

 

 

 

Operating Instructions for SCALANCE X-400 Industrial Ethernet Switches

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Image 91
Siemens X-400 Connectors of the Signaling Contact and Grounding Strap, Floating signaling contact relay connector