MODEL: M3LT Space-saving Signal Conditioners M3-UNIT Series POWER INPUT DC Power R4: 10 – 32 V DC THERMOCOUPLE TRANSMITTER (Operational voltage range 9 - 36 V, ripple 10 %p-p max.) (field- and PC-configurable) Functions & Features • Accepts a thermocouple input and provides an isolated, [1] CONFIGURATION OPTIONS linearized DC signal A: PC and field configurable • Easy ‘One-Step Cal’ calibration using the front three B: Field configurable control buttons without needing a PC; PC software is also usable. [2] OPTIONS • Both input and output type and range are configurable STANDARDS & APPROVALS • Front control button function can be locked blank: CE marking • Cold junction compensation /UL: UL approval, CE marking • Linearization and burnout • CE marking RELATED PRODUCTS • UL approval • PC configurator software (model: M3CON) Downloadable at M-System’s web site. 18 (.71) A dedicated cable is required to connect the module to the PC. Please refer to the internet software download site or the users manual for the PC configurator for applicable 106 cable types. (4.17) GENERAL SPECIFICATIONS Construction: Small-sized front terminal structure 110.5 (4.35) Connection: Euro type connector terminal mm (inch) Housing material: Flame-resistant resin (gray) Isolation: Input to output to power MODEL: M3LT–R4/[1][2] Overrange output: -15 to +115 % Zero adjustment: -15 to +15 % (front) Span adjustment: 85 to 115 % (front) ORDERING INFORMATION Burnout: Upscale (default), downscale or no burnout • Code number: M3LT-R4/[1][2] selectable Specify a code from below for [1] and [2]. Cold junction compensation: CJC sensor attached to the (e.g. M3LT-R4/A) input terminals • Orders will be shipped at default factory settings (K, 0 – Status indicator LED: Tri-color (green/amber/red) LED; 1000°C input/4 – 20 mA output) Flashing patterns indicate operation status of the transmitter. INPUT – Field-selectable Configuration: Via PC configurator and DIP SW Thermocouple Programmable features include: (PR), K, E, J, T, B, R, S, C (WRe 5-26), • I/O type and range N, U, L, P (Platinel II) • Zero and span adjustments • Burnout action • User’s T/C table setting OUTPUT – Field-selectable (max. 300 points, input emf specified within Current -100 – +1000 mV) 0 – 20 mA DC • Others Voltage (Refer to the instruction manual) -2.5 – +2.5 V DC ‘One-Step Cal’ calibration: With I/O type and the full-scale -10 – +10 V DC range configured via the internal DIP switches, precise 0 % and 100 % ranges are calibrated via the front control http://www.m-system.co.jp/ M3LT SPECIFICATIONS ES-2661 Rev.7 Page 1/4 MODEL: M3LT buttons with a help of LED. Line voltage effect: ±0.1 % over voltage range Insulation resistance: ≥ 100 MΩ with 500 V DC Dielectric strength: 1500 V AC @ 1 minute INPUT SPECIFICATIONS (input to output or power to ground) • Thermocouple: See table 1 500 V AC @ 1 minute (output to power) Input resistance: ≥ 1 MΩ Burnout sensing: 130 nA ± 10 % Temperature range: See Table 1. CALCULATION EXAMPLES OF OVERALL ACCURACY [Example 1] Input: K thermocouple, 0 – 1000°C, Output: 4 – 20 mA DC OUTPUT SPECIFICATIONS 1) Absolute value accuracy (Table 1): 0.25°C ■ DC CURRENT 2) CJC error (0.5°C) added: 0.75°C Maximum range: 0 – 20 mA DC 3) 0.75°C / 1000°C × 100 = 0.075 % Minimum span: 1 mA 4) 0.075 % < 0.1 % of span. ➠ 0.1 % is selected. Conformance range: 0 – 24 mA DC (Negative overrange 5) Output span 16 mA (= 20 mA – 4 mA) current below 0 mA is not available.) Max. span 20 mA Offset: Lower range can be any specific value within the Output span ≥ 1/10 of max. span ➠ No need of adding output range provided that the minimum span is 0.2 %. maintained. 6) Overall accuracy equals ±0.1 % of span Load resistance: Output drive 12 V maximum [Example 2] ■ DC VOLTAGE Input: K thermocouple, 50 – 150°C, Output: 2.0 – 2.5 V DC Narrow Spans (mV) 1) Absolute value accuracy (Table 1): 0.25°C Maximum range: -2.5 – +2.5 V DC 2) CJC error (0.5°C) added: 0.75°C Minimum span: 250 mV 3) 0.75°C / (150 – 50)°C × 100 = 0.75 % Conformance range: -3 – +3 V DC 4) 0.75 %> 0.1 % of span. ➠ 0.75 % is selected. Wide Spans (V) 5) Output span 0.5 V (= 2.5 V – 2.0 V) Maximum range: -10 – +10 V DC Max. span 5 V Minimum span: 1 V Output span ≤ 1/10 of max. span ➠ Add 0.2 %. Conformance range: -11.5 – +11.5 V DC 6) Overall accuracy equals ±0.95 % of span (0.75 + 0.2) Offset: Lower range can be any specific value within the output range provided that the minimum span is maintained. STANDARDS & APPROVALS Load resistance: Output drive 1 mA maximum CE conformity: EMC Directive (2004/108/EC) EMI EN 61000-6-4: 2007 INSTALLATION EMS EN 61000-6-2: 2005 Power Consumption Approval: •DC power input: Approx. 3 W UL/C-UL general safety requirements Operating temperature: -25 to +65°C (-13 to +149°F) (UL 61010-1, CAN/CSA-C22.2 No.1010-1) Max. 55°C (131°F) for UL approval Operating humidity: 0 to 95 %RH (non-condensing) Mounting: DIN rail Weight: 100 g (3.53 oz) PERFORMANCE Accuracy: See Table 1. Cold junction compensation error: ±0.5°C at 25 ±10°C ±0.9°F at 77 ±18°F Temp. coefficient: ±0.015 %/°C (±0.008 %/°F) of max. span at -5 to +55°C [23 to 131°F] Response time: ≤ 0.9 sec. (0 – 90 %) Burnout response: ≤ 10 sec. http://www.m-system.co.jp/ M3LT SPECIFICATIONS ES-2661 Rev.7 Page 2/4 MODEL: M3LT EXTERNAL VIEW ■ FRONT VIEW ■ SIDE VIEW LED1 (LD1) 10 11 12 LED2 (LD2) Configuration DIP SW 7 8 9 LED3 (LD3) 4 3 2 1 MODE Button OFF UP Button ON DOWN Button SW1 Configurator Jack SW2 8 7 6 5 4 3 2 1 SW3 OFF ON 4 5 6 4 3 2 1 OFF ON INPUT TYPE, RANGE & ACCURACY Table 1 °C °F Thermocouple MIN. MAXIMUM CONFORMANCE ACCURACY MIN. MAXIMUM CONFORMANCE ACCURACY SPAN RANGE RANGE *1 SPAN RANGE RANGE *1 (PR) 20 0 to 1760 0 to 1760 ±1.00 36 32 to 3200 32 to 3200 ±1.80 K (CA) 20 -270 to +1370 -150 to +1370 ±0.25 36 -454 to +2498 -238 to +2498 ±0.45 E (CRC) 20 -270 to +1000 -170 to +1000 ±0.20 36 -454 to +1832 -274 to +1832 ±0.36 J (IC) 20 -210 to +1200 -180 to +1200 ±0.25 36 -346 to +2192 -292 to +2192 ±0.45 T (CC) 20 -270 to +400 -170 to +400 ±0.25 36 -454 to +752 -274 to +752 ±0.45 B (RH) 20 100 to 1820 400 to 1760 ±0.75 36 212 to 3308 752 to 3200 ±1.35 R 20 -50 to +1760 200 to 1760 ±0.50 36 -58 to +3200 392 to 3200 ±0.90 S 20 -50 to +1760 0 to 1760 ±0.50 36 -58 to +3200 32 to 3200 ±0.90 C (WRe 5-26) 20 0 to 2315 0 to 2315 ±0.80 36 32 to 4199 32 to 4199 ±1.44 N 20 -270 to +1300 -130 to +1300 ±0.30 36 -454 to +2372 -202 to +2372 ±0.54 U 20 -200 to +600 -200 to +600 ±0.20 36 -328 to +1112 -328 to +1112 ±0.36 L 20 -200 to +900 -200 to +900 ±0.25 36 -328 to +1652 -328 to +1652 ±0.45 P (Platinel II) 20 0 to 1395 0 to 1395 ±0.25 36 32 to 2543 32 to 2543 ±0.45 *1. [Accuracy + Cold Junction Compensation Error 0.5°C (0.9°F)] or ±0.1% of span, whichever is greater. If the selected output span equals to or narrower than the one-tenth of the maximum span, add 0.2% EXTERNAL DIMENSIONS & TERMINAL ASSIGNMENTS unit: mm (inch) 10 11 12 7 8 9 DIN RAIL 35mm wide 4 5 6 CJC SENSOR 110.5 (4.35) [5 (.20)] 18 (.71) (model: CJM) • When mounting, no extra space is needed between units. http://www.m-system.co.jp/ M3LT SPECIFICATIONS ES-2661 Rev.7 Page 3/4 106 (4.17) 7 (.28) 62 (2.44) MODEL: M3LT SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM STATUS CONTROL BUTTONS ext. leadwire DIP SW 10 Isolation T / C + Output Output + + 4 7 Computation Driver Low Drift OUTPUT – Amplifier – 8 – & Burnout * 5 11 + CJC POWER SENSOR 6 12 – CONFIGURATOR JACK 9 Terminal Block *The CJC Sensor is secured to the terminal 6. Loosen only the terminal 4 – 5 and connect the T/C extension wires. Specifications are subject to change without notice. http://www.m-system.co.jp/ M3LT SPECIFICATIONS ES-2661 Rev.7 Page 4/4