KROHNE IFC 110 Converter - Manual (Page 12)

Sect. 1.3.5 Part A System installation and start-up
12 IFC 110 F 05/2003
1.3.5 Connection diagrams for power supply and flow sensors
Important remarks for circuit diagrams PLEASE NOTE !
• The figures in brackets indicate the stranded drain wires of the shields (see cross-sectional
drawings of signal lines in Section 1.3.1).
• Electrical connection to VDE 0100 ”Regulations for the erection of power installations with
nominal voltages up to 1000 V”
• Power supply 24 V AC / DC:
protective extra-low voltages (PELV) acc. to VDE 0100/
VDE 0106 and/or IEC 364/IEC 365, or corresponding
national regulations.
• Systems to be used in hazardous areas are subject to special regulations applying to
electrical connections (see Section 1.3.6) for hazardous-duty instruments.
• PE = protective conductor
FE = functional ground conductor
IMPORTANT!
Electrical connection of EEx flow sensors and EEx signal converters to be carried
out as described in Sect. 1.3.6.
* Do not remove the internal connection (cable) inside the terminal compartment of the signal
converter (yellow/green wire) between the U-clamp terminal and terminal 10 (protective
conductor for protection class I instruments).