OEM Models
LT230 Series Digital Indicating Controllers - Discontinued
Small general type with 4-digit display of measured value.
New overshoot suppression function.
Models LT230 digital indicating controllers feature many functions including newly developed PID algorithms and an overshoot suppression function.
LT230 Series
TabView Example - Basic From Existing Markup
    Universal input of thermocouples, resistance thermometers and DC voltage/current.
    MODBUS communications protocol.
    Front panel with 7mm thickness.
    Conformance to CE, UL and CSA (ul, CSA: approval pending).
    Front panel conforming to NEMA4X(IP66) water and dust protection (option).
    Model Output signals
    LT23010000-00A Standard universal input/On-off pulse type
    LT23030000-00A Standard universal input/Current output type
    LT23050000-00A Standard universal input/SSR drive pulse type
    LT23060000-00A Standard universal input/Voltage output type
    LT23310000-00A High temperature universal input/On-off pulse type
    LT23330000-00A High temperature universal input/Current output type
    LT23350000-00A High temperature universal input/SSR drive pulse type
    LT23360000-00A High temperature universal input/Voltage output type
    Inputs Input ranges Standard universal High temperature universal
    Thermocouple B 0 to 1820°C 32 to 3300°F
    R 0 to 1760°C 32 to 3200°F
    S 0 to 1760°C 32 to 3200°F
    N 0 to 1300°C 32 to 3250°F
    K -200 to 1370°C -300 to 2450°F
    E -199.9 to 700.0°C -300 to 1250°F -
    J -199.9 to 900.0°C -300 to 1650°F -
    T -199.9 to 400.0°C -300 to 700°F -
    U -199.9 to 400.0°C -300 to 700°F -
    L -199.9 to 900.0°C -300 to 1650°F -
    WRe5-WRe26 0 to 2310°C 32 to 4190°F -
    W-WRe26 0 to 2310°C 32 to 4190°F -
    PtRh40-PtRh20 0 to 1880°C 32 to 3400°F -
    Platinel II 0 to 1390°C 32 to 2500°F -
    Resistance thermometers Pt100 -199.9 to 850.0°C -300 to 1500°F
    JPt100 -199.9 to 649.0°C -300 to 1200°F
    DC voltage 5V 0 to 5V (0.000 to 5.000) Scale setting range -1999 to 9999
    Decimal point position adjustable
    DC current 20mA* 4 to 20mADC (Converted into 1 to 5V)
    Input Specifications
    Input signal Thermocouple
    Standard universal: B, R, S, N, K, E, J, T, U, L
    High temperature universal: B, R, S, N, K, WRe5-WRe26, W-WRe26, PtRh40-PtRh20, Platinel II
    Resistance thermometer: Pt100, JPt100
    DC voltage: 0 to 5V
    A 250Ω shunt resistor (sold separately) and the 5V (1 to 5V) are used.
    Accuracy rating ±0.25% ± 1 digit (at reference operation conditions)
    Reference junction compensation accuracy ±1.0°C (23°C±10°C), ±2.0°C (-10°C to 50°C)
    Measuring unit °C or °F
    Sampling cycle About 0.5 second
    Burnout Up scale (thermocouple input, resistance thermometer input)
    Measuring current Resistance thermometer : 110µA
    Scaling Ranges/scales of DC voltage/current input are optional settings.
    (-1999 to 9999)
    Scale decimal point 0 to 3
    Control Specifications
    Control cycle time Approx. 0.5 second
    Control system On-off pulse type PID system
    Current output type PID system
    SSR drive pulse type PID system
    Voltage output type PID system
    * 2-position control is selectable.
    Control setpoint 2 sets switching, 4-digit setting
    Setpoint ramp function: Setpoint ramp unit : °C/minute (common to rising/falling)
    Setpoint rising ramp: 0 to 9999 (0 = no operation)
    Setpoint falling ramp: 0 to 9999 (0 = no operation)
    PV start function : At SV change, power-on, Run/Ready
    Auto-tuning Standard (Manual setting of PID constants enabled)
    PID constants

    P: 0.1 (0.0) to 999.9% (0 = 2-position)
    I: 0 to 9999 seconds
    D: 0 to 9999 seconds

    PID deadband (gap) 0.0 to 9.9%
    Anti-reset windup High limit : 0.0 to 100.0%, Low limit : -100.0 to 0.0%
    Overshoot suppression function On/off selectable
    Control operation With direct/reverse action switching
    Output specifications On-off pulse type
    Output signal: On-off pulse conductive signal
    Contact ratings: Resistive load-100VAC 3A, 240VAC 3A, 30VDC 3A, Inductive load-100VAC 1.5A, 240VAC 1.5A, 30VDC 1.5A
    Pulse cycle: Approx. 1 second to 180 seconds adjustable
    Current output type
    Output signal: 4 to 20mADC
    Load resistance: 600Ω or less
    SSR drive pulse type
    Output signal: On-off pulse voltage signal, At ON 12VDC ± 20% (load current … 20mA or less), At OFF 0.8VDC or less
    Pulse cycle: Approx. 1 second to 180 seconds adjustable
    Voltage output type
    Output signal: 0 to 10VDC
    Output resistance: Approx. 10Ω
    Load resistance: 50kΩ or more
    General Specifications
    Rated power voltage 100V to 240VAC 50/60Hz universal power supply
    Allowable power voltage 90 to 264VAC
    Working temperature range -10 to 50°C (maximum 40°C at closed installation)
    Working humidity range 20 to 90%RH (no dew condensation)
    Power consumption Maximum about 10VA
    Installation Panel installation
    Weight Maximum 200g
    International Standards
    CE EN61326 + A1 Class A, EN61000-3-2 + A14
    EN61000-3-3,EN61010-1 + A2
    UL UL3111-1
    CSA (C-UL) C22.2 No. 1010
    IP NEMA4X (IP66) (front protection)
    PS Sheet LT230 Series PSE-307A Download
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