Siemens X-400 Connectors of the Signaling Contact and Grounding Strap, X1 X2

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	91
C79000-G8976-C186-03