KROHNE OPTISONIC 7300 EN - Manual (Page 52)

4
ELECTRICAL CONNECTIONS
52
OPTISONIC 7300
www.krohne.com 09/2012 - 4001102303 - MA OPTISONIC 7300 R03 en
Control input passive, Ex i I/Os
• 5.5 V ≤ U
ext
≤ 32 VDC
• I
max
= 6 mA at U
ext
≤ 24 V
I
max
= 6.5 mA at U
ext
≤ 32 V
• Switching point for identifying "contact open or closed":
Contact open (off): U
0
≤ 3.5 V with I ≤ 0.5 mA
Contact closed (on): U
0
≥ 5.5 V with I ≥ 4 mA
• X designates the connection terminals B, if available.
DANGER!
For devices used in hazardous areas, additional safety notes apply; please refer to the Ex
documentation.
INFORMATION!
• Any connection polarity.
Figure 4-28: Control input passive C
p
Exi
1 Signal