ELECTRICAL CONNECTIONS
3
9
MFC 400
www.krohne.com
12/2017 - 4006097501 - AD MFC 400 Profinet R01 en
3.3 PROFINET IO cable types
The decision for 2 or 4 pair cabling is depending on the application.
Decision criteria can be as follows:
2 pair cabling
4 pair cabling
Cable design
2 pair cabling shall be realised as one star-
quad or as 2 twisted pair design
4 pair cabling shall be realised as two star-
quad or as 4 twisted pair design
Devices in the network
PROFINET IO devices
PROFINET IO devices and also other
IT devices
Max. length
1
100 m
100 m
Field of application
Specialised and optimised for defined
PROFINET IO automation tasks
Universal use of a PROFINET IO network for
PROFINET IO and other Ethernet
applications
Table 3-1: Decision criteria for 2 or 4 pair cabling
1
From connection point to connection point. E.g. Ethernet switch to device, device to device, control system to device.
INFORMATION!
If the PROFINET IO device is used with 4 pair cabling only 2 pairs are connected.
Application
Data cabling
Mode
2 pairs
4 pairs
Type
RJ45 plug compatible or M12 D coded
RJ45 plug compatible
Mandatory number of contacts
4
8
Rated voltage
57 VDC
Current (min.)
600 mA per contact at +70
°
C / +158
°
F
Outer cable diameter
5.5...8.0 mm / 0.22...0.31"
5.5...9.0 mm / 0.22...0.35"
Wire cross-section
AWG 22
AWG 22...24
Wire diameter
1.4...1.6 mm / 0.055...0.0063"
1.0...1.6 mm / 0.039...0.0063"
Wire construction
Solid / Stranded
Transmission performance
ISO/IEC 11801 Edition 2.0 Amendment 2, Class D at least Category 5
Category (min.)
ISO/IEC 11801 Edition 2.0 Connector Category 5
Shielding
Yes
Cable strain relief
IEC 61984
Mating cycles
Min. 50
Table 3-2: Recommended cabling
