ControllersIndicators Digital Indicating Controllers LT350 Series (48mm X 96mm) Digital Indicating Controllers LT370 Series (96mm X 96mm) Digital Indicating Controllers     Models LT350 and LT370 digital indicating controllers feature all functions, which are necessary for various control applications, including newlu developed PID algorithms and an overshoot suppression function.   Features Easy view and simple operation by large LED displays and large switches Universal input of thermocouples, resistance thermometers and DC voltage/current MODBUS communications protocol Front panel with 7mm thickness Conformance to CE, UL and CSA Front panel conforming to NEMA4X (IP66) water and dust protection (option) Models Models Specifications LT35010000-00A Standard universal input/On-off pulse type LT35030000-00A Standard universal input/Current output type LT35050000-00A Standard universal input/SSR drive pulse type LT35060000-00A Standard universal input/Voltage output type LT35310000-00A High temperature universal input/On-off pulse type LT35330000-00A High temperature universal input/Current output type LT35350000-00A High temperature universal input/SSR drive pulse type LT35360000-00A High temperature universal input/Voltage output type LT37010000-00A Standard universal input/On-off pulse type LT37030000-00A Standard universal input/Current output type LT37050000-00A Standard universal input/SSR drive pulse type LT37060000-00A Standard universal input/Voltage output type LT37310000-00A High temperature universal input/On-off pulse type LT37330000-00A High temperature universal input/Current output type LT37350000-00A High temperature universal input/SSR drive pulse type LT37360000-00A High temperature universal input/Voltage output type Measuring Ranges 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 2350°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 -19999 to 20000 Decimal point position adjustable DC current 20mA* 4 to 20mADC (Converted into 1 to 5V) Note) For DC current input, a shunt resistor (250) is necessary. Specifications 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 DC current…4 to 20mADC A 250 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 5A, 240VAC 5A, 30VDC 5A       Inductive load: 100VAC 2.5A, 240VAC 2.5A, 30VDC 2.5A   Pulse cycle …  Approx. 1 second to 180 seconds adjustable Current output type    Output signal …  4 to 20mADC    Load resistance …  600 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. 10    Load resistance …  50k 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 14VA Installation Panel installation Weight About 350g (LT350) About 450g (LT370) International Standards CE EN61326 + A1 Class A, EN61000-3-2 + A14 UL UL3111-1 CSA (C-UL) C22.2 No. 1010 IP NEMA4X (IP66) (front protection) *PDF data sheet is available at "Download Center". Page Top BACK