MEXM MSYSTEM | Alldatasheet

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Technical content

MODEL: MEXM MEXM SPECIFICATIONS ES-4610 Rev.2 Page 1/4 http://www.m-system.co.jp/ Final Control Elements VALVE POSITIONER (for Modbus; built-in SSR) Functions & Features

  • Used for control of valve or damper where capacitor motor and potentiometer are employed
  • Valve opening and position readable via Modbus communication
  • Control of 24 - 200 V AC system electric actuator use
  • Builtin SSR directly drives an AC motor (1.97) 136 (5.35) (3.15) mm (inch) MODEL: MEXM-110-AD4[1]

ORDERING INFORMATION

  • Code number: MEXM-110-AD4[1] Specify a code from below for [1]. (e.g. MEXM-110-AD4/Q)
  • Specify the specification for option code /Q (e.g. /C01/S01) FEEDBACK RESISTANCE 1: Potentiometer CONTROL OUTPUT 1: SSRs incorporated BRAKE 0: None POWER INPUT Universal AD4: 100 – 240 V AC / 100 – 240 V DC (universal) (Operational voltage range 85 - 264 V AC, 50 - 60 Hz / 85 - 264 V DC, ripple 10 %p-p max.) [1] OPTIONS blank: none /Q: With options (specify the specification) SPECIFICATIONS OF OPTION: Q (multiple selections) COATING (For the detail, refer to M-System's web site.) /C01: Silicone coating /C02: Polyurethane coating /C03: Rubber coating TERMINAL SCREW MATERIAL /S01: Stainless steel PACKAGE INCLUDES...
  • Terminating resistor (110 Ω, 0.25 W) GENERAL SPECIFICATIONS Construction: Plug-in Connection: M3.5 screw terminals Screw terminal: Chromated steel (standard) or stainless steel Housing material: Flame-resistant resin (black) Full-closed position adjustment range: 0 - 25 % (front) Full-open position adjustment range: 75 - 100 % (front) Deadband adjustment: 0.1 – 8.0 % (front adj.; refer to the table below) Factory set to 1.5 % Restarting timer: 2 sec. Isolation: Modbus to feedback resistance to control output to power Manual operation switch: Manual full-close or full-open position command Deadband adjustment Deadband adj. SW Deadband (%) 0 0.1 1 0.3 2 0.5 3 0.7 4 1.0 5 1.5 6 2.0 7 3.0 8 5.0 9 8.0 MODBUS COMMUNICATION Communication: Half-duplex, asynchronous, no procedure Standard: Conforms to TIA/EIA-485-A Baud rate: 4800, 9600, 19.2 k, 38.4 k (bps) (with rotary switch) (factory setting: 38.4 kbps) Protocol: Modbus-RTU Node address setting: 1 - 99 (with rotary switch) (factory

MODEL: MEXM MEXM SPECIFICATIONS ES-4610 Rev.2 Page 2/4 http://www.m-system.co.jp/ setting: 00) Parity: None, even or odd (with DIP switch) (factory setting: odd) Stop bit: 1 or 2 (with DIP switch) (factory setting: 1) Segment max. length: 500m Max. number of nodes: 31 (excluding master) Modbus LED: Blink in normal communication INPUT SPECIFICATIONS

  • Feedback Potentiometer: 100 Ω – 10 kΩ Minimum span: 50 % of total resistance Excitation: Approx. 3.3 V DC OUTPUT SPECIFICATIONS ■Control Output: SSR (zero-crossing); 20-240 V AC 0.1-1 A Leakage current at OFF: Approx. 10 mA @ 240 V AC (2 - 3) Closing ON (1 - 3) Opening ON Deviation +- Deadband Output operation: Terminal no. in ( ). INSTALLATION Power consumption
  • AC: approx. 1.5 VA at 100 V approx. 4 VA at 200 V approx. 6 VA at 264 V
  • DC: Approx. 1 W Operating temperature: -5 to +60°C (23 to 140°F) Operating humidity: 30 to 90 %RH (non-condensing) Atmosphere: No corrosive gas or heavy dust Mounting: Surface or DIN rail Weight: 300 g (0.66 lb) PERFORMANCE Insulation resistance: ≥ 100 MΩ with 500 V DC Dielectric strength: 2000 V AC @ 1 minute (Modbus to feedback resistance to control output to power to ground) STANDARDS & APPROVALS Refer to the manuals to comply with the standards. EU conformity: EMC Directive EMI EN 61000-6-4 EMS EN 61000-6-2 Low Voltage Directive EN 61010-1 Installation Category II (power) Measurement Category II (control output) Pollution degree 2 Modbus or control output or feedback resistance to power: Reinforced insulation (300 V) Modbus or feedback resistance to control output: Reinforced insulation (250 V) RoHS Directive EN 50581

MODEL: MEXM MEXM SPECIFICATIONS ES-4610 Rev.2 Page 3/4 http://www.m-system.co.jp/ EXTERNAL VIEW Full-close position adj. Modbus setting SW2 Modbus setting SW1 Manual open switch Manual close switch Full-open position adj. Deadband Modbus node address x 1 Modbus node address x 10 Modbus transfer rate Modbus LED MODBUS WIRING CONNECTION HOST PC ■ HOST PC WIRING DA DB SLD MEXM DA DB SLD MEXM Terminator Connect terminating resistor between DA and DB of both ends of the unit. Connect the attached terminating resistor to the MEXM. Master unit is connectable also at both ends or other points. Tx+/Rx– Terminator Tx–/Rx+ SG Rx+ Rx– EXTERNAL DIMENSIONS & TERMINAL ASSIGNMENTS unit: mm (inch) 5678 2111 10 80 (3.15) 80 (3.15) (.79) 40 (1 .57) 50 (1 .97) 7 .8 (.31) CLAMP (top & bottom) DIN RAIL 35mm wide2–4.5 (.18) dia. MTG HOLE 25 (.98) deep 11 –M3.5 SCREW

  • When mounting, no extra space is needed between units.

MODEL: MEXM MEXM SPECIFICATIONS ES-4610 Rev.2 Page 4/4 http://www.m-system.co.jp/ SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM Base Socket OPENCLOSE CAPACITOR MOTOR Control Circuit Close Open M FEEDBACK POTENTIOMETER Open Close U (+) V (−) POWER DA HOST Modbus RS485 DRIVER SSR SSRDB SLD Voltage Reference Amplifier ROTARY SW DIP SW Modbus LED Note: Notice that making motor wiring with limit switch, every time the switch operates, can be causing stress on SSR. Tx+/Rx− Tx−/Rx+ EXPLANATIONS OF TERMS

  • SSR (Solid State Relay) Composed only of semiconductor parts, SSR is free from arc discharge or chattering which is typical with electromagnetic relays. It features excellent characteristics against vibration, physical impact or other environmental conditions.
  • Zero-Cross Function SSR with zero-cross function turns on when AC power voltage is near zero, creating delay of switching when input is provided in the middle of an wave cycle, thus limiting transient switching noise voltage and rush current. Specifications are subject to change without notice.