Endress+Hauser Levelflex FMP53 - Connection Examples for the Switch Output; Connection Options; Cable Specification; Cable Diameter and Cross-Section of the Strands

Electrical connection Levelflex FMP51, FMP52, FMP54
58 Endress+Hauser
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-
A0015909
å 16
Connection of a relay
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
3+
2
1
+
4-
A0015910
å 17
Connection of a digital input
1 Pull-up resistor
2 Digital input
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 Admissible cable diameter Admissible cross-section of the
strands
• Standard
•
Ex ia
• Ex ic
Plastics M20x1,5 5 to 10 mm (0.2 to 0.39 in) 0.5 to 2.5 mm
2
(20 to 14 AWG)
• Ex tD
• Ex nA
• FM approval
• CSA approval
Metal M20x1.5 7 to 10 mm (0.28 to 0.39
in)