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10
7 Electrical connection
The unit must be connected by a qualified electrician.
► Disconnect power before connecting the device.
► Observe the national and international regulations for the installation of
electrical equipment.
► Connect the device as indicated on the terminals.
► Ensure an electrical connection between the fail-safe SmartPLC
SafeLine AC422S (terminal X1, pin 5 FE) and the ground of the
installation.
7.1 Wiring
Terminal X1
Pin
Description
AS-i 2 +
1
AS-i + for AS-i line 2
AS-i 2 -
2
AS-i - for AS-i line 2
AS-i 1 +
3
AS-i + for AS-i line 1
AS-i 1 -
4
AS-i - for AS-i line 1
FE
5
Functional earth
6
not connected
Terminal X2
Pin
Description
24 V
1
+24 V device supply
GND
2
GND
Terminal X4
Pin
Description
1...8
IN1...8
9...12
OUT1...4
13,14
GND
15,16
+24 V power supply Safe-IO module