Connectors Of The Signaling Contact And Grounding Strap (X2) - Siemens SCALANCE X-400 Operating Instructions Manual

6.6.2

Connectors 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.
Figure 6-10
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
Operating Instructions for SCALANCE X-400 Industrial Ethernet Switches
C79000-G8976-C186-03
Pin assignment of connector X2
MK1 Floating signaling contact relay connector 1
M3 Ground
GND Protective earth
MK2 Floating signaling contact relay connector 2
Installation and Commissioning
91