Modular Two-Wire Telecontrol System
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Modular Two-Wire Telecontrol System Transmission via electrically isolated cables over distances up to 30 km › Modular expansion up to 32 stations and a maximum of 512 I/O modules › Easy parameterization of the modules with DIP switches › The carrier-frequency system guarantees high interference immunity – hamming distance > 6 › Uncomplicated linking to other transmission media such as radio and telephone networks within the framework of the MFW system family as well as connection to third-party-systems over various interfaces and numerous protocols

telecontrol via electrically isolated cables General system description The two-wire variant of the modular telecontrol system MFW was especially designed for data transmission on electrically isolated two-wire cables. There is no need of laying special cables in the ground. The common, partly existing signal cables can be used for data transmission. Only the maximum loop resistance, which results in the sum of the resistance of each single conductor, has not to be exceeded. The noise immunity of the data transmission on the twowire line is very high. The cable routing can be done either in...

MODULAR TWO-WIRE TELECONTROL SYSTEM Terminal assignment MFW-I/O unit (galvanically isolated) Two-wire modem MFW-CPU unit Fault signalling Basic module with 8 transistor outputs Basic module with 5 Dl, 2 Al and 1 transistor output T\ Please note: The transistor outputs are plus-switching !

TELECONTROL VIA ELECTRICALLY ISOLATED CABLES Basic module with I/O

modular two-wire telecontrol system Basic module with protocol interface Technical data General Data Assembly Housing / Protection class Connection terminals Wire cross section rigid or flexible without wire sleeve with wire sleeve Operating and ambient temperature Air humidity Operating voltage Nominal operating voltage UB Operating voltage range Two-wire-Modem Attenuation of the two-wire cable Loop resistance Impedance Transmission voltage Isolation voltage between two-wire and supply voltage two-wire and I/O‘s maximum 40 dB maximum 1 MΩ 600 Ω switchable 2 VSS / 9,5 VSS at 680 Ω 4 kVeff

telecontrol via electrically isolated cables Technical data Basic module with 8 DI Power consumption (only basic module) Signal voltage US Nominal voltage maximum voltage minimum voltage for High-Level maximum voltage for Low-Level Input resistance maximum counting frequency minimum pulse width galvanic isolation between signal- and supply voltage Basic module with 8 relays outputs Power consuption (only basic module) *2 Load on relay outputs minimum maximum Total current 230 V AC Counting frequency Pulse width / Pause galvanic isolation between signal- and supply voltage Basic module with...

modular two-wire telecontrol system Basic module with 5 DI, 2 AI, 1 DO Power consumption (only basic module) Digital inputs Signal voltage US Nominal voltage Maximum voltage Minimum voltage for High-Level Maximum voltage for Low-Level Input resistance maximum counting frequency minimum pulse width / -pause Analog inputs measurement range Resolution Deviation Burden of input current Transistor output Load Galvanic isolation between output- and supply voltage and supply voltage *1 *2 maximum 2.5 W + load current of the transistor output 24 V DC 48 V DC 7.0 V DC 2.2 V DC ca. 100 kΩ 10 Hz *1 50...

telecontrol via electrically isolated cables M FW - The telecontrol system for almost all medias! The product family of the MFW is so flexibly designed that the system is suitable for data transmission on different medias. Active principles, I/O‘s and interfaces are all the same for all medias. Only the modem variant and media specific transmission methods are changing. Two-wire and powerline telecontrol system • Modular expansion up to 32 stations • potentially isolated wires up to 30 km respectively live wires and cable shields • high immunity against interferences through carrier...