Cable Specification - Endress+Hauser Levelflex FMP50 PROFIBUS PA Operating Instructions Manual

Levelflex FMP50 PROFIBUS PA
Endress+Hauser
Connection examples for the switch output
3+
R
+
i
-
4-
 12 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
For optimum interference immunity we recommend to connect an external resistor
(internal resistance of the relay or Pull-up resistor) of < 1 000 Ω.
7.1.2

Cable specification

• Devices without integrated overvoltage protection
Pluggable spring-force terminals for wire cross-sections 0.5 to 2.5 mm
• Devices with integrated overvoltage protection
Screw terminals for wire cross-sections 0.2 to 2.5 mm
• For ambient temperature T
PROFIBUS
Use a twisted, screened two-wire cable, preferably cable type A.
For further information on the cable specifications, see Operating Instructions
BA00034S "PROFIBUS DP/PA: Guidelines for planning and commissioning",
PNO Guideline 2.092 "PROFIBUS PA User and Installation Guideline" and
IEC 61158-2 (MBP).
≥60 °C (140 °F): use cable for temperature T
U
Electrical connection
1
3+
R
i
A0015909
4-
 13 Connection of a digital input
1 Pull-up resistor
2 Digital input
2 (20 to 14 AWG)
2 (24 to 14 AWG)
+20 K.
U
+
2
A0015910
49