Siemens X-400 ユーザーズマニュアル
Installation and Commissioning
Operating Instructions for SCALANCE X-400 Industrial Ethernet Switches
C79000-G8976-C186-03
C79000-G8976-C186-03
91
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.
tor to the rear terminal block on the PS module.
X 2
X 1
M K 2
G N D
M 3
M K 1
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.
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