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TRM202 2-channel controller

TRM202 is a 2-channel process controller from akYtec for on-off or proportional control, which features an RS485 interface, 2 configurable analog inputs and 2 optional outputs (relay, 4-20 mA) and is available in wall or panel mount enclosure.

2-channel controllerOn-off controlProportional controlhandrelayhandrelayModbus protocolRS485 interfaceAmbient temperature +1...+50°C

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Product Description

    TRM202 is a 2-channel process controller available in two enclosures: for wall or for panel mounting. Beside the on-off control, the TRM202 can also implement proportional control. This controller has two analog inputs and two outputs on board. The inputs are configurable and can be set for standard current/voltage signals (0-1 V, 4-20 mA, etc.) or for different standard TC/RTD signals, what allows this device to measure, display and control different physical process variables such as pressure, temperature, humidity, etc. The optional outputs (relay, 4-20 mA) and RS485 interface provide particular flexibility when using this controller for creating automatic control and regulation systems of various processes in different areas of industry, agriculture, and utilities.

    Functions and features:

    • Measuring the process value and its transformation according to the sensor type
    • Displaying the process values and configuration parameters on two 4-digit LED displays
    • Adjusting measured parameters and fixing errors of the converters
    • Displaying measurement results on a 4-digit LED screen
    • Creating an alarm signal in case of converters’ failure, displaying cause on the LED-screen and sending alarm message to external device if necessary
    • Creating signals for controlling external actuating mechanisms and devices according to preset instructions for adjustment
    • Displaying preset adjustment instructions on a LED screen
    • Scaling and filtering the input signal
    • Signal correction, square root function
    • Calculation of the difference between two signals
    • Independent on-off control of two process variables or three-step control of one process variable
    • Network control (RS485 interface) with akYtec, Modbus RTU and Modbus ASCII protocols as a Slave
    • Signal retransmission using analog output 4-20 mA
    • Alarm output
    • Sensor / input error detection
    • Error indication
    • Configuration via the functional keys

    Areas of application:

    The TRM202 temperature controller can be used for measuring, recording or control the temperature or other physical parameters (weight, humidity, etc.).

    Ordering information

    TRM202 - X - XX
    96 x 96 x 70 mm H1
    96 x 48 x 100 mm H2
    105 x 130 x 65 mm H3
    Relay output (8 A / 230 V AC R
    4-20 mA I

    Standard variants

    TRM202-H1.RR 2DO (Relay) Panel 96 х 96 mm
    TRM202-H2.RR 2DO (Relay) Panel 96 x 48 mm
    TRM202-H3.RR 2DO (Relay) Wall 105 x 130 mm
    TRM202-H1.RI 1DO (Relay)+1AO (4-20 mA) Panel 96 х 96 mm
    TRM202-H2.RI 1DO (Relay)+1AO (4-20 mA) Panel 96 x 48 mm
    TRM202-H3.RI 1DO (Relay)+1AO (4-20 mA) Wall 105 x 130 mm
    Power supply 230 (90...264) V AC; 50 (47...63) Hz
    Power consumption, max. 6 VA
    Sampling time / input 1 s
    Analog inputs 2
    Input signal RTD
    Standard signals
    Optional outputs 2
    Type R - Relay 8 A / 230 V AC
    I - Analog 4-20 mA, 10...36 V, max. 1 kohm
    Interface RS485
    Protocol Modbus-RTU / ASCII, akYtec
    Baud rate 2.4...115.2 kBit/s
    Ambient temperature +1...+50 °C
    Humidity up to 80% (at +35°C, non-condensing)
    IP Code H1 IP54 (front)
    H2 IP54 (front)
    H3 IP44
    Dimensions H1 96 x 96 x 70 mm
    H2 96 x 48 x 100 mm
    H3 105 x 130 x 95 mm
    Material plastic
    Sensor Measuring range 
    Standard current / voltage signal
    0-1 V
    -50…+50 mV
    0-5 mA
    0-20 mA
    4-20 mA
    RTD according to IEC 60751:2008
    Pt50, Pt100 -200…+750°C
    TC according to IEC 60584-1:2013
    J -200…+1200°C
    N -200…+1300°C
    K -200…+1300°C
    S 0…+1750°C
    R 0…+1750°C
    A 0…+2500°C
    RTD according to GOST
    50P, 100P -200…+750°C
    50M, 100M -190…+200°C
    Cu50, Cu100 -50…+200°C
    53M -190…+200°C
    46P -200…+750°C
    TC according to GOST
    L -200…+800°C
Additional Information

    Typical application cases


    1. Regulation and registration of the measured value on output 2 of type I.

    Power PID control

    2. Regulation of the difference between two measured values.

    Regulation of the difference between two measured values

    3. One-channel three position control (with two different settings).



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