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MECT SRL
MPT390 M6

MPT390 M6

Product catalog summary

General Overview
The MPT/390/M6 series are single-loop microprocessor temperature regulators with dimensions of 48x96 mm and a depth of 120 mm. They support various input types such as thermoresistance PT100, thermocouples, voltage, and current inputs. Key features include dual displays for set-point and process value, relay for main intervention point regulation, static open collector NPN output, servomotor control, soft start, self-tuning functions, and ramp programming with three programs of eight steps each. Optional features include alarm relays, ammeter input for heater breaker controls, and opto-isolated analogue outputs.

Technical Characteristics
The instrument supports sensors like thermoresistance PT100 and various thermocouples. It offers analogue inputs and outputs with specific resistance and load requirements. Control options include ON-OFF and PID with adjustable parameters. The power supply ranges from 90 to 260 Vac/Vdc, and the device dimensions are 48 x 96 x 120 mm.

Display Messages
The display can show various messages indicating operational status or errors, such as temperature out of range or sensor malfunctions. Specific error codes relate to self-tuning and soft start functions.

Instrument Connection Overview
The front panel includes displays for temperature and set-point, keys for programming, and LEDs indicating alarm status, ramp function, and load control. The terminal board provides connections for relays, power supply, analogue outputs, and sensor inputs.

Installation Notes
Installation involves connecting the appropriate sensors and following specific instructions for different control configurations, such as heating, cooling, servomotor, or valve control. The document provides detailed diagrams and instructions for each setup.

Regulations
The document outlines the setup for PID and ON-OFF type regulations, including parameters for cycle time, proportional band, integrative and derivative time, and cutback constants.

Ramp Set Up
Instructions for setting up ramp functions are provided, allowing for the programming of multiple steps and execution of ramp programs.

Serial Output
Details on data reading, transmission, and writing between the host and the instrument are included, along with command codes and status word explanations.

Password Function and Default Parameters
The document explains the password function for data protection and how to reset to factory default parameters.

Specifications
The instrument supports multiple sensor types, including Fe/CO, Cr/Al, Pt/Pt-Rh, and PT100, with specific temperature ranges. It also accommodates analogue inputs (0-10V, 0-20mA, 4-20mA) and outputs.

Procedures
The document outlines a series of steps to configure the instrument, including entering a password, selecting temperature scales (°C or °F), choosing sensor types, setting decimal points for analogue inputs, and configuring alarm settings. Each step involves using specific keys ('SP+5', 'enter') to navigate and confirm selections.

Alarm and Control Settings
The instrument allows for detailed alarm configuration, including setting minimum and maximum alarm values, hysteresis, and relay functions. It supports both heating and cooling control, with options for direct and reverse functions.

Recommendations
Users are advised to follow the step-by-step procedures carefully to ensure accurate configuration. The document also provides guidance on resetting to factory default parameters if needed.

Key Data from Tables
The tables provide reference numbers for various settings and procedures, including password entry, sensor selection, and alarm configuration. They serve as a quick reference for users to navigate the programming process efficiently.

Alarm Functionality
The alarm system activates when the temperature deviates from the set point (SP) by a specified offset. It can be configured to trigger when the temperature falls below or rises above the SP, depending on the settings of AL1 or AL2. The alarm contact can be set as normally open or closed, and the relay hysteresis is adjustable. The alarm LED indicates the alarm status, not the contact configuration.

Analogue Output Options
The MPT/390 thermoregulator offers standard or opto-isolated analogue outputs, supporting 0-20 mA, 4-20 mA, and 0-10 V outputs. These outputs can be used for readout or controlling motorized valves. The maximum load for current output is 300 Ω, and for voltage output, it is 1KΩ. The resolution is 12 bits.

Regulation Modes
The MPT/390 supports automatic, manual, and disabled regulation modes. Automatic regulation uses ON-OFF or PID controls, while manual regulation allows user-defined power values. Disabled regulation turns off all outputs.

PID Regulation
PID regulation involves setting cycle time, proportional band, integrative and derivative times, and a cutback constant to minimize temperature overshoot. Self-tuning can automatically calculate these parameters.

ON-OFF Regulation
This mode allows hysteresis programming relative to the set-point, with symmetric variation around the desired temperature. A dead band can be defined for heating-cooling regulation.

Soft-Start Function
This function ensures a "cold" start by limiting power to 30% of maximum during initial heating. It is programmable and can be canceled if needed.

Ramp Program Menu
The ramp program menu allows users to select and modify programs. Programs can be combined, and settings such as repetition and delay time can be adjusted. The menu also includes password protection for program changes.

Program Execution
The instrument executes selected programs, starting from the first step. If the program ends and repetition is off, the instrument stops. If repetition is on, the program repeats indefinitely. The instrument can resume from a stop condition under certain conditions.

Serial Output
The MPT390 M6 model supports communication with a host computer via RS232, RS422, or RS485 serial connections. The serial output allows reading and writing of all instrument parameters using an ASCII protocol. Up to 31 instruments can be connected via RS485.

Data Transmission
The document details the setup for data transmission between the host and the instrument, including the structure of transmission strings and error handling. It explains how the instrument responds to different transmission scenarios.

Command Codes
A table of command codes is provided for programming the MPT instrument. These codes cover various settings such as scale, output, control, input, and analogue output selection.

Security and Default Settings
Two passwords protect the main and ramp menus, preventing unauthorized changes. The 'dEF' function resets all parameters to factory defaults, erasing previous settings.

Recommendations and Notes
External switches and fuses are recommended for safety as the instrument lacks a power switch and internal fuse. Avoid exposure to power elements, humidity, acids, and heat sources. Mect srl disclaims responsibility for improper use not conforming to instrument specifications.

Catalog excerpts

USER'S MANUAL

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MPT390 M6 1.0 GENERAL POINTS The instruments of the family " MPT/390/M6" represent a series of " Single Loop" microprocessor temperature regulators in the standard 48x96 dimensions (120 mm. depth.) The complete version of the MPT/390/M6 instrument has the following technical characteristics: 1- Input from Thermoresistance PT100 ( scale -40.0 ÷ 200.0°C or -40 ÷ 800°C), or from thermocoupling Fe/CO (0÷600°C) and Cr/Al (0÷1200°C) and Pt-Pt/Rh (0 ÷ 1710°C), or from voltage ( 0÷ 10 V ) and current (0/4 ÷ 20 mA) selectable from the keyboard. 2- Two display to see Set-Point and Process Value and 6 keys...

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MPT390 M6 on-off / pid HY in the range 0 ÷ F.S. °C/°F cycle time in the range:1 ÷ 200 sec proportional band: 0 ÷ F.S. °C/°F integrative time: 0 ÷ 6000 sec. derivative time: 0 ÷ 600 sec cutback const.: 0 ÷ F.S. °C/°F of min. or max in the range: 0 ÷ F.S. °C/°F Alarms Exchange relay 220V /5A Main Output relay contact 220V /5A Alarm output Power supply 90 ÷ 260 Vac/Vdc 20÷30Vac/Vdc Analogue outputs 0 ÷ 10 V – 0 ÷ 20 mA – 4 ÷ 20 mA Max load for current output 300 Ω Min load for voltage output 1 KΩ 10 V Max voltage given 20 mA Max current given 12 bits Resolution by TA/1 A Heater breaker control 48...

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MPT390 M6 1.3 MPT INSTRUMENT CONNECTION OVERVIEW DESCRIPTION OF THE FRONT COMMANDS input readout key for ramp programming. It is possible to set up 3 programs of 8 steps each and execute one of them. set point readout keys to change the set point (not working if ramp in progress) key to enter main menu programming functions PV-Upper Display: temperature as read by sensor SP-Lower Display: set-point (power percentage on manual control) Led AL1: alarm status indication or cooling action or servomotor control drive (if requested ) Led AL2: alarm 2 status indication (if requested) Led Rp: ramp function...

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DESCRIPTION OF THE TERMINAL BOARD Thermocoupling sensor principal exchange relay ( NO contact). principal exchange relay ( COM contact). principal exchange relay ( NC contact). contact NO of alarm relay 1 (if requested) contact NO of alarm relay 2 (if requested) static output for main operations (terminal 8: power supply, for exsternal static relay, of around 16 Vdc). load control break HB (if requested) instrument power supply. Between terminals 13 and 15 power at 90/260 Vac/Vdc, or 12/30Vac/Vdc if requested. analogue outputs (if requested). serial output connections (if requested). Thermoresistance...

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For thermoresistance connection pay attention to the line resistance: if too high there may be some errors in readout. Use the same kind of wire for the three connections. If shielded cable is used, connect the shield to ground at one end only. THERMOCOUPLING CONNECTIONS Thermocouplings must be isolated. only compensated wire for the type If shielded cable is used, connect CURRENT INPUT CONNECTIONS

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STATIC OUTPUTS CONNECTIONS V+ Be careful: this output is not isolated and may be used for an external solid state relay with double isolation between instrument and power line. SERVOMOTOR CONNECTIONS Valve closing Valve supply Servomotor Valve opening SERIAL OUTPUTS AND ANALOGUE OUTPUTS CONNECTIONS See dedicated paragraphs. ME4014_15 10/11

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MPT390 M6 2.0 INSTALLATION NOTES 1. Copy the connection schemes on pages 6, 7 and 8 taking into account the following points: a- the instrument can operate with analogue inputs or temperature sensors of both thermoresistance and thermocoupling types. Only one of this sensors can be connected (attach the connection only for the chosen sensor, leaving free the other connections.). b- the connector diagram shows all the possible options that the instrument may have; if certain options are not required then the relative connections are not necessary. 2. Follow the instructions of the paragraph: 2.1:...

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2.1.1 DIAGRAM MENU WITH HEATING OR COOLING CONTROL I ^ 3 = number relevant to used table FE-CO Cr-AL Search for the item to change, shown in the upper display using key The value to change is shown on the lower display. If you must change a number, use the key to increment the blinking digit, key to shift the blinking digit, an you must select an item, use the To exit the menu, press I_I : the modified parameters will be stored.

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if requested analogue outputs tCOn = In for heating control tCOn = dlr for cooling control bAud bAud if requested serial output

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MPT390 M6 Table 3 ref. touch appears on appears on NOTES key PV display SP display PASS 0 000 In this phase the instrument asks for the 1 enter Password in order to save the data already programmed. The number memorized by the factory is 0, but any number between 0 and 9999 can be memorized by writing where CPAS appears (next displayed item). PASS 0 0 00 Set Up Procedure. 2 SP-4 To digit the desired number touch the key " SP-4" to move the flashing number to the right. SP+ PASS 0 1 00 3 Touch the key " SP+5" to increase the 5 flashing number CPAS 0 000 Number of the access key to the 4 enter...

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MPT390 M6 ref. touch appears on appears on NOTES key PV display SP display IS t 0000 Set the requested reading with the 8 enter beginning of the analogue input. To digit the number see 2 and 3 paragraphs. FS t 1000 Set the requested reading with the full 9 enter scale of the analogue input. To digit the number see 2 and 3 paragraphs. Out rISC Choose rISC for heating regulation with 10 enter the main relay. Set the requested regulation by “SP+5” and confirm with “enter“. LISP 0 000 Lower limit set-point. To digit the 11 enter number follow the procedure described in points 2 and 3 LSSP 0 000 Upper...

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MPT390 M6 ref. touch appears on appears on NOTES key PV display SP display AbA1 On Minimum alarm enable. 16 enter On: Minimum alarm relay is always enabled OFF: Minimum alarm relay is enabled after the first time the temperature reaches the alarm value To change this item use the “SP+5“ key and confirm by “enter” AL1 0 000 Alarm value set up (if requested). To 17 enter digit the value see steps 2 and 3. An alarm can work as minimum alarm (if < set-point) or maximum alarm (if > setpoint). ISA1 001 Alarm 1 hysteresis set up 18 enter 19 Possibility of inverting the relay 1 function nA = normally...

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MPT390 M6

MPT390 M6

Catalog excerpts

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