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Digital modules
8.4 SM 326; DI 8 x NAMUR
Fail-safe signal modules
Installation and Operating Manual, 01/2010, A5E00085586-10
109
8.4.2
Special Features when Wiring SM 326; DI 8 x NAMUR for Hazardous Areas
Cable guide for SM 326; DI 8 x NAMUR in Hazardous Area
Observe the following note when operating the SM 326; DI 8 x NAMUR in the potentially
explosive area:
Note
The L+/M supply line terminals at the digital input module SM 326; DI 8 x NAMUR must be
protected using a cable guide in order to conform to specified air gaps and creepage
distances for operation in potentially explosive atmospheres.
Cable guide
Order number: 6ES7393-4AA10-0AA0; 5 units
1
2
3
4
4
①
Cable guide for screw-type terminals
②
Auxiliary wedge for cage-clamp terminals
③
Cable guide for cage-clamp terminals
④
Separating lines (breaking points):
separate the three sections at these points
Figure 8-26 Cable guide for SM 326; DI 8 x NAMUR