KROHNE MFC 300 EN - Manual (Page 53)

ELECTRICAL CONNECTIONS
4
53
MFC 300
www.krohne.com 02/2012 - 4000498602 - MA MFC 300 R03 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 terminals B, C or D. The functions of the connection terminals depend on the
settings refer to Function tables on page 79.
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 4-16: Status output / limit switch passive S
p
Figure 4-17: Control input passive C
p
1 Signal
.book Page 53 Monday, February 6, 2012 11:01 AM