KROHNE MFC 010 C Converter - Manual (Page 9)

MFC010 Interface Manual 7
3.2 Recommended Cable Specification
The c able us ed t o c onnect t he M FC010 t o t he M odbus m aster c ontrol s ystem should be an overall
screened t wisted pai r c able, with t wo t wisted pai rs of a m inimum 20 AWG conductor. The total cable
capacitance s hould not ex ceed 50nF and t he c onductor inductance should not exceed 200μH. The
external cable insulation should be specified appropriately for the environment into which the device is to
be installed. The outside diameter of the cable should be between 6.5 mm and 9.5 mm to ensure proper
sealing is achieved when passed through the cable gland entry.
KROHNE can supply suitable cable that can be or dered to the required length, the part numbers are as
follows
External Insulation Colour Grey - KROHNE Part No. X5871059989
External Insulation Colour Blue - KROHNE Part No. X5871069989
(For hazardous area installations)
The maximum cable length from the MFC010 to the bus “Master” device is 300m when using the default
Modbus transmission speed of 19200 Baud. There are further limitations on the cable length when
installing the system into a Hazardous area, refer to section 4.3 on page 17 for details.