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Signal converters and splitters with galvanic isolation ENC

Signal converters and splitters with galvanic isolation ENC

ENC signal converters and splitters are designed to provide galvanic isolation, as well as to measure sensor signals (temperature, pressure, humidity, level, flow, position, and more) and convert them into standard current and voltage outputs.

The universal measuring input supports direct connection of resistance temperature detectors (RTDs), thermocouples (TCs), current shunts, standard current and voltage signals, potentiometers, and resistance sensors.

Application: converting and transmitting process parameters from primary sensors to secondary recording, monitoring, and control devices (systems). Used in metallurgy, chemicals, food, mining, processing, and other industries, as well as in utilities and agriculture.

Modifications Where to buy?

Universal galvanically isolated signal converter ENC.S1-UI-DP-RS
ENC.S1-UI-DP-RS
  • Input: 1 universal
  • Output: 1 analog (0…20 mA, 0…10 V)
  • Galvanic isolation : up to 3000 VDC
Signal splitter with galvanic isolation ENC.S2-UI-DP-RS
ENC.S2-UI-DP-RS
  • Input: 1 universal
  • Outputs: 2 analog 0…20 mA, 0…10 V
  • Galvanic isolation: up to 3000 VDC
  • Description of ENC signal converters and splitters

    ENC.S1 is a universal signal converter with one measuring input and one analog output.

    Galvanic isolation diagram of ENC.S1
    Galvanic isolation diagram of ENC.S1

    ENC.S2 is an analog signal splitter / converter with one measuring input and two independent analog outputs.

    Galvanic isolation diagram of ENC.S2
    Galvanic isolation diagram of ENC.S2
  • Features of ENC converters
    • Universal measuring input supporting 32 types of primary sensors: RTDs, TCs, current shunts, potentiometers, variable resistors, and also standard current signals (−20...20, 0...20, 4...20 mA) and voltage signals (−10...10, 0...5, 0...10 V).
    • Full galvanic isolation of all circuits (input, outputs, power supply, interface) with an isolation test voltage up to 3000 VDC, ensuring the safety of connected equipment.
    • High conversion accuracy: max. basic error limit 0.1% of span.
    • Flexible scaling: supports custom scales and non-standard input/output ranges. This simplifies replacement of sensors with non-standard characteristics without changing controller logic.
    • Multi-point linearization: a custom non-linear relationship between input and output signals (21 points). This is ideal for complex-shaped tanks, non-linear sensors, and specialized transducers.
    • Active and passive current loop connection for both input sensors and output secondary devices.
    • RS-485 interface with Modbus RTU — for advanced configuration, calibration, and diagnostics, and allows to use the signal converter as a high-accuracy analog I/O module in a process control system.
    • Configuration via DIP switches: quick selection of sensor type, measurement range, analog output configuration, and serial interface parameters.
    • Mounting on the T-BUS via a bus connector compatible with Alpha-X series PLCs and I/O modules, which simplifies assembly and maintenance of distributed control systems.
  • Technical characteristics of ENC converters
    Parameter Value
    Supply voltage 10...30 VDC
    Power consumption max 4 W
    Dielectric strength between galvanically isolated circuits up to 3000 V DC
    Power supply protection reverse polarity protection
    Measuring input (universal) RTDs: Cu50, Cu100, Cu500, Cu1000, Pt100, Pt500, Pt1000, Ni100, Ni500, Ni1000;
    TCs: R, T, J, K, L, N, B, S;
    current shunts: −125...125 mV;
    current signals: −20...20 mA;
    voltage signals: −10...10 V;
    potentiometers and resistances: max 20 kΩ
    Analog outputs independent, configurable: 0...20 mA or 0...10 V
    Basic error limit * ±0.1% - for RTDs (except Cu50), TCs, current shunts, current and voltage analog signals;
    ±0.25% - for Cu50 RTDs;
    ±0.5% - for potentiometers and resistance signals up to 20 kΩ
    Ambient temperature coefficient error ±0.1% / 10 °C from +23 °C
    Output response time (for 10 to 90% input change) 100 to 2000 ms depending on filter settings
    Communication interface and protocol RS-485, Modbus RTU
    Ingress Protection IP20
    Ambient temperature (operating or storage) -20...+50 °C
    Relative humidity (operating or storage) 10...80% (without condensation)
    Terminal specifications pluggable terminal blocks with screw clamps, conductor cross-section max 1.5 mm²
    Weight max 105 g

    (*) - For measurement: of the full measuring range for selected sensor type.
    For generation and conversion: of the full output signal range.

  • Overall dimensions of ENC converters
    Overall dimensions of ENC converters, mm
    Overall dimensions of ENC converters, mm
  • Connection diagrams of ENC converters
    Connection diagram of ENC.S1 signal converter
    Connection diagram of ENC.S1 signal converter
    Connection diagram of ENC.S2 splitter with two independent analog outputs
    Connection diagram of ENC.S2 splitter with two independent analog outputs

    Attention! Do not connect supply voltage through the housing terminals and the TB-PS bus terminal block at the same time. This may damage the device. The TB-PS terminal block is not included and is purchased separately.