Levelflex FMP51 Modbus
Endress+Hauser 19
Power supply
Supply voltage 10.5 to 29 V
DC
Ripple 1 V
SS
(< 100 Hz); 10 mV
SS
(> 100 Hz)
Power consumption
Maximum 1 000 mW
Typical 400 mW
Power supply failure
• Configuration is retained in the HistoROM (EEPROM).
• Error messages (incl. value of operated hours counter) are stored.
Potential equalization
No special measures for potential equalization are required.
If the device is designed for hazardous areas, observe the information in the documentation
"Safety Instructions" (XA).
Terminals
• Supply voltage
Plug-in spring terminals for wire cross-sections 0.2 to 2.5 mm
2
(24 to 14 AWG)
• Modbus
Plug-in spring terminals for wire cross-sections 0.2 to 1.5 mm
2
(24 to 16 AWG)
Cable entries Connection of power supply and signal line
To be selected in feature 050 "Electrical connection"
• Gland M20; Material dependent on the approval:
– For Non-Ex, ATEX, IECEx, NEPSI Ex ia/ic:
Plastics M20x1.5 for cable ⌀5 to 10 mm (0.2 to 0.39 in)
– For Dust-Ex, FM IS, CSA IS, CSA GP, Ex nA:
– For Ex d:
No gland available
• Thread
– ½" NPT
– G ½"
– M20 × 1.5
• Plug M12 / Plug 7/8"
Only available for Non-Ex, Ex ic, Ex ia
Connection of remote display FHX50
Dependent on feature 030: "Display, Operation":
• "Prepared for display FHX50 + M12 connection":
M12 socket
• "Prepared for display FHX50 + custom connection":
M16 cable gland
Cable specification
• Power line: Standard device cable
• Modbus connection : A shielded cable is recommended. Observe grounding concept of the plant.
Overvoltage protection
If the measuring device is used for level measurement in flammable liquids which requires the use of
overvoltage protection according to DIN EN 60079-14, standard for
test procedures 60060-1 (10 kA, pulse 8/20 μs), an overvoltage protection module has to be
installed.
External overvoltage protection module
HAW562 or HAW569 from Endress+Hauser are suited as external overvoltage protection.
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