Connection Examples For The Switch Output; Connection Options; Cable Specification; Cable Diameter And Cross-Section Of The Strands - Endress+Hauser Levelflex FMP51 Operating Instructions Manual

Electrical connection
58
7.1.2

Connection examples for the switch output

For HART devices, the switch output is available as an option. See product structure, feature
20: "Power Supply, Output", option B: "2-wire; 4-20mA HART, switch output"
Devices with PROFIBUS PA and FOUNDATION Fieldbus always have a switch output.
3+
+
-
4-
Connection of a relay
å 16
Suitable relays (examples):
• Solid-state relay: Phoenix Contact OV-24DC/480AC/5 with mounting
rail connector UMK-1 OM-R/AMS
• Electromechanical relay: Phoenix Contact PLC-RSC-12DC/21
7.2

Connection options

7.2.1

Cable specification

PROFIBUS
Use a twisted, screened two-wire cable, preferably cable type A.
For further information on the cable specifications, see Operating Instructions BA00034S
"Guidelines for planning and commissioning PROFIBUS DP/PA", PNO Guideline 2.092
"PROFIBUS PA User and Installation Guideline" and IEC61158-2 (MBP).
7.2.2

Cable diameter and cross-section of the strands

Type of protection Cable gland
• Standard Plastics M20x1,5
• Ex ia
• Ex ic
• Ex tD Metal M20x1.5
• Ex nA
• FM approval
• CSA approval
Levelflex FMP51, FMP52, FMP54
A0015909
å 17
1
2
Admissible cable diameter Admissible cross-section of the
strands
5 to 10 mm (0.2 to 0.39 in) 0.5 to 2.5 mm
7 to 10 mm (0.28 to 0.39
in)
+
1
2
3+
4-
A0015910
Connection of a digital input
Pull-up resistor
Digital input
2 (20 to 14 AWG)
Endress+Hauser