KROHNE MFC 400 EN - Manual (Page 42)

4
ELECTRICAL CONNECTIONS
42
MFC 400
www.krohne.com 08/2013 - 4002075802 - MA MFC 400 R02 en
Status output / limit switch passive, basic I/Os
• U
ext
≤ 32 VDC
• I ≤ 100 mA
• R
L, max
= 47 kΩ
R
L, min
= (U
ext
- U
0
) / I
max
• open:
I ≤ 0.05 mA at U
ext
= 32 VDC
closed:
U
0, max
= 0.2 V at I ≤ 10 mA
U
0, max
= 2 V at I ≤ 100 mA
• The output is open when the device is de-energized.
• X stands for the connection terminals B, C or D. The functions of the connection terminals
depend on the settings refer to Function tables on page 68.
Control input passive, basic I/Os
• 8 V ≤ U
ext
≤ 32 VDC
• I
max
= 6.5 mA at U
ext
≤ 24 VDC
I
max
= 8.2 mA at U
ext
≤ 32 VDC
• Switching point for identifying "contact open or closed":
Contact open (off): U
0
≤ 2.5 V with I
nom
= 0.4 mA
Contact closed (on): U
0
≥ 8 V with I
nom
= 2.8 mA
• Can also be set as a status output; for the electrical connection refer to status output
connection diagram.
INFORMATION!
•
Any connection polarity.
Figure 4-9: Status output / limit switch passive S
p
Figure 4-10: Control input passive C
p
1 Signal
.book Page 42 Monday, August 26, 2013 9:05 AM