8
5.2 Core cross sections
Type of wire
Max� core cross-section
AWG
massive
1�5 mm²
16
flexible
1�5 mm² (with wire end ferrule)
−
For Industrial Control Equipment in North America:
Use copper conductors with min� cross-section AWG16 (1�5 mm
2
)
5.3 External fuse
► Protect the AC input voltage by means of circuit-breakers (fuse rate → device
label or data sheet)�
►
Observe the national regulations�
5.4 Screen connection
►
Connect the screen of the unit to the machine earth so that the AS-i system is
operated symmetrically with the machine potential�
> Improvement of the noise immunity to symmetrical interference on the AS-i
cables�
> No shifting of the symmetry of the AS-i system�
6 Operating and display elements
1: LED AS-i output voltage green (AS-i OK)
2: Locking clip