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Catalog excerpts

Signal converter 641 • Current inputs 0/4..20 mA • Voltage inputs 0..5, 0..10 V, ± 10V • Potentiometer • Output 0/4..20 mA, 0..5/10 V, ± 10V, or passive 2-wire output 4-20 mA • Power supply for 2-wire transmitter • Galvanic isolation • Four selectable dampings • Nominal accuracy 0.05 % of range • Power supply 24 VDC ± 10% • mV-inputs on request Signal converter 641 is designed to convert standard process input /output signals. Current inputs 0/4..20 mA can be converted into voltage outputs, -10..+10 V can be converted to 0..10 V, low mV inputs can be converted to standard outputs etc. Signal converter 641 accepts 2-wire transmitters without a separate power supply. Potentiometer input as a standard. Galvanic isolation is made at the same time with the convertion. Galvanic isolation cuts the noise signals which may exist when using low voltage signals, e.g. thermocouples. 0.±5 V, 0..±10 V or current 0/4..20 mA. Converter 641 gives also the possibility to signal damping. There is four selectable dampings: 10 ms, 250 ms, 500 ms or 750 ms. Selecetion via DIP-switches. Operating voltage 24 VDC ± 10% is also isolated from input and output. The common inputs and outputs are selected via DIP-switches, see table next page. Fine adjustment is made with front panel zero and span potentiometers. The ranges, not given in the table, may be delivered on request. Signal converter 641 is delivered always to ordered range. Output selectable via DIP-switches: voltage 0-5V, 0-10V, Power supply 24 VDC isolated from input and output Output: 0...20 mA 4..20 mA 0...5 V 0...10 V +-10V 20..4 mA (reversed) 2-wire output 4-20 mA (passive output) 2-wire transmitter without external power supply Power supply 24 VDC isolated from input and output

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Accuracy Typical linearity Temperature effects: Input resistance Potentiometer Output load Power supply Isolation Power consumption 60mA, Range selection Damping T=63% Rise time 100% Frequency response Ambient temp. Case width Mounting Terminal blocks < 0,05% of range < 0.05 % of range under 0.006% /°C 50 W for current > 100 MW for voltage input 500W - 100 kW Max. 600 W 24 VDC ± 10 % >1000 V input-output 40 mA, voltage output mA-output 80 mA, 2-wire transmitter DIP-switches and jumpers Four selectable dampings 0,1 ms, 250 ms, 500 ms and 700 ms 300 ps 10 ms, 0...1 kHz, ±...

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