Unidirectional transmission on control lines up to 15 km distance › Transmission of 8 binary values, two of it are configurable as counting values › Expansion possibilities by 8 additional binary values or one analog value › Short-circuit proof transistor outputs › High interference immunity of the transmission; adjustable data rate › The state of the outputs are adjustable on transmission errors › Easy configuration by DIP-switches › Operation monitoring and status indication by LED › Compact, 22,5mm wide modules for DIN-rail assembly

Mode of operation 2-wire transmission The two-wire transmission system ZS8A was especially designed for cable-saving and immune to disturbance transmission of messages, commands and analog values over control lines with up to 15 km distance. TheZS8A system has no certain demand on the quality of the used cable for transmission, ithasahigh disturbance immunity against couplings from supply or signalling lines run in parallel. Therefore it is suitable for signal transmission in branched water/wastewater plants, industrial facilities and railway plants as well as building automation. System extension...

telecontrolling on control lines Mode of operation 2-wire transmission Every usual signal cable is suitable as transmission wire, in which the maximum loop restistance must not be exceeded. The bridgeable distance depends on the quality of the cable and the form and quantity of possibly noise interferences. To adapt the ZS8A on the different application cases ( type of transmission cable, distance of transmission and the speed requirements for transmission ), the data transmission rate is adjustable by DIP-switches. With lower baud rates larger distances and higher immunity against disturbances...

basic module Two-wire cable basic module Expansion module Expansion module Analog Input Expansion module analog input Analog output Expansion module analog output

telecontrolling on control lines Terminal assignment Top view DIP-Switches System bus-connector Bottom view Dimensions Dimensions are valid for all ZS8A-modules

Technical data Nominal operating voltage UB Operating voltage range Power consumption at UB Transmitter basic module Expansion module digital input Expansion module analog input Receiver basic module Expansion module digital output Expansion module analog output Digital inputs Input voltage Input resistance min. pulse width-/pause max. count rate (basic module E1/E2) Transistor outputs Load on Transistor outputs Total current of all outputs Pulse width -/pause (basic module A1/A2) Counting rate (basic module A1/A2) Analog I/O Resolution Accuracy of the analog value Voltage signal Input resistance...

telecontrolling on control lines Signal transmission Two-wire level Loop resistance Transmission rate (adjustable) maximum UB / 25 mA maximum 10 kΩ 1200, 2400, 4800 or 9600 Baud General data Operating- and ambient temperature Storage temperature Permitted relative humidity Connection terminals Housing / Protection Assembly Weight ZS8A-GS8DE / ZS8A-EM8DE ZS8A-GE8DA / ZS8A-EM8DA ZS8A-EM1AE / ZS8A-EM1AA -20°C ... + 60°C without condensation -20°C ... + 70°C without condensation max. 75 % annual average (Gr. F DIN 40040) Screw terminals, nominal cross section 1,5 mm2 Plastic / IP 40 DIN mounting...

You will find a suitable power supply within our accessories portfolio. Power supplies WSN 0,9/24 Wide range switching power supply • Compact 22,5 mm thin power supply • Input voltage range nominal 100 ... 240 V AC 110 ... 220 V DC • Output voltage 24 V DC • Rated output current 0,9 A Uninterruptible power supplies CBS - Capacitor Backed 24 V power supply • • • • • Broad input voltage 115 ... 230 V AC Nominal output current 2 A High life time: 30 years @ 30° Celsius Maintenance-free by long-lasting ultra capacitors Energy storage for 500 or 1000 J PLG 60 - Accumulator buffered 24 V power supply...