Electrical Connection; Connections On The Ls4 As-Interface - Siemens SIGUARD LS4-4 Anleitung

4.3

Electrical connection

4.3.1 Connections on the LS4 AS-Interface

X1 AS-Interface connection (data and auxiliary power supply)
X2 Connection for the AS-Interface address programming device
X3 Connection for the switching of protective fields
X4 Restart button connection
X5 Optical PC interface
Fig. 4.3-1: Connections on the LS4 AS-Interface
Socket/ Function
plug
X1 (plug) AS-Interface data
and 24 VDC aux-
iliary power sup-
ply
X2 Bus address pro-
gramming input
X3 Switching of pro-
(socket) tective fields
X4 (plug) Restart button
Table 4.3-1:
FE – functional earth: this must be supplied in order to give improved EMC (electro-
magnetic compatibility), and should be connected to the functional earth of the ma-
chine or system.
36
X1 X2
PIN 1
AS-inter-
face +
AS-inter-
face +
SF 1
n.c.
Connection pin assignment of the LS4 AS-Interface
X5
X3 X4
PIN 2 PIN 3
V AS-inter-
face -
n.c. AS-inter-
face -
SF 2 SF 3
Restart n.c.
PIN 4 PIN 5
+ 24 V FE
DC
n.c. n.c.
SF 4 + 24 V
DC
+ 24 V n.c.
DC