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Coolmay MX3G-43C/70C

Coolmay MX3G-43C/70C Series HMI PLC All-in-One User Manual

Integrated Human Machine Interface (HMI) and Programmable Logic Controller (PLC)

1. Introduction

This manual provides detailed instructions for the installation, operation, maintenance, and troubleshooting of the Coolmay MX3G-43C/70C series HMI PLC all-in-one units. These devices integrate a Human Machine Interface (HMI) with a Programmable Logic Controller (PLC) into a single compact unit, offering a powerful and efficient solution for industrial automation applications. Please read this manual thoroughly before using the product to ensure proper and safe operation.

2. Safety Information

Always observe the following safety precautions to prevent injury to personnel and damage to the equipment:

  • Ensure the power supply is disconnected before performing any installation, wiring, or maintenance.
  • Verify that the power supply voltage matches the product's requirements (24V DC).
  • Do not plug or unplug cables when the power is on.
  • Avoid dropping metal shavings or wire ends into the ventilation holes of the controller.
  • Properly ground the FG (Frame Ground) terminal to improve anti-interference ability.
  • Do not disassemble or modify the product or its wiring without authorization.
  • In case of peculiar smell or abnormal sound, immediately turn off the power.
  • Use shielded cables for communication and high-frequency signal input/output to minimize interference.

3. Product Overview

The Coolmay MX3G series HMI PLC all-in-one units are designed for robust industrial control. They feature a military-grade 32-bit CPU for fast processing and enhanced electromagnetic interference resistance. Key features include:

  • Integrated Design: Combines HMI and PLC functionalities in one unit.
  • High Processing Speed: Compatible with FX3S PLC.
  • Analog I/O: MX3G-43C supports up to 5 analog inputs and 2 analog outputs (5AD2DA). MX3G-70C supports up to 9 analog inputs and 2 analog outputs (9AD2DA). Analog I/O precision is 12 bits.
  • Communication: Supports MODBUS RTU, RS485, and RS232 protocols. Includes 1 HMI download port and two PLC programming ports (RS232/Type-C).
  • High-Speed Counting & Pulse Output:
    • High-speed counting: Conventional 2 single-phase 60KHz + 4 10KHz or 1 AB (Z) phase 30KHz + 1 AB (Z) phase 5KHz.
    • High-speed pulse: For 70C, Y0-Y1 is 100KHz, Y2-Y3 is 50KHz. For 43C, Y0-Y1 is 100KHz, Y2-Y3 is 10KHz.
    • Total transmission for high-speed counting + high-speed pulse cannot exceed 300KHz.
  • Security: Special 8-bit encryption (password 12345678) to prevent unauthorized reading of ladder logic programs.
  • Convenient Wiring: All wiring terminals are 3.81 pitch pluggable terminals.

The product is available in various configurations, including MX3G-43C (4.3-inch display) and MX3G-70C (7-inch display) models.

Coolmay HMI PLC all-in-one unit, front view with operational interface.
Figure 1: Coolmay HMI PLC Front View
Rear view of Coolmay HMI PLC showing X input, Y output, analog I/O, RS485, RS232, PLC programming port, HMI programming interface, PLC run switch, and 24V input power supply.
Figure 2: Coolmay HMI PLC Rear View with Port Labels
Video: Demonstration of the Coolmay HMI PLC user interface and functions.

4. Specifications

The following tables detail the specifications for the Coolmay MX3G series HMI PLC units.

4.1. Basic Parameters

Table of specifications for Coolmay HMI PLC, including basic parameters, electrical parameters, and mechanical design dimensions for MX3G-43C, MX3G-50C, and MX3G-70C models.
Figure 3: Specifications Table (Chart 1: Basic parameter)

4.2. Electrical Parameters

Table of specifications for Coolmay HMI PLC, including basic parameters, electrical parameters, and mechanical design dimensions for MX3G-43C, MX3G-50C, and MX3G-70C models.
Figure 4: Electrical Parameters Table (Chart 2: Electrical parameter)

4.3. Mechanical Dimensions

Dimensional drawing for Coolmay MX3G-43C HMI PLC, showing front, side, and top views with measurements in millimeters.
Figure 5: MX3G-43C Dimensions
Dimensional drawing for Coolmay MX3G-70C HMI PLC, showing front, side, and top views with measurements in millimeters.
Figure 6: MX3G-70C Dimensions
Table of specifications for Coolmay HMI PLC, including basic parameters, electrical parameters, and mechanical design dimensions for MX3G-43C, MX3G-50C, and MX3G-70C models.
Figure 7: Mechanical Design Dimensions (Figure 1 Installation dimension)

5. Installation and Setup

Follow these steps for proper installation of your HMI PLC unit:

  1. Panel Cutout: Refer to the mechanical dimension drawings (Figures 5, 6, 7) for the precise cutout size required for your specific model (e.g., MX3G-43C: 120x94mm, MX3G-70C: 192x138mm).
  2. Mounting: Insert the HMI PLC unit into the panel cutout. Secure it using the four mounting buckle holes on the side. Ensure the screws or clamps are tightened to prevent the unit from falling off.
  3. Power Supply: Connect a stable 24V DC power supply to the designated power input terminals. Ensure the power supply is 18W or above.
  4. Grounding: Correctly connect the FG (Frame Ground) terminal to a reliable ground to enhance anti-interference capabilities.

6. Wiring Diagrams

Accurate wiring is critical for the proper function of the HMI PLC. Refer to the following diagrams for detailed connection instructions.

Detailed wiring diagram for Coolmay MX3G-43C-22MT-5AD2DA HMI PLC, showing input/output terminals, analog I/O, and communication ports.
Figure 8: MX3G-43C-22MT-5AD2DA Wiring Diagram
Product structure diagrams for Coolmay MX3G-43C, MX3G-50C, MX3G-70C HMI PLCs, showing component locations and COM interface pin definitions.
Figure 9: Product Structure and COM Interface Definitions (Figure 2 Product structure, Figure 6 PLC 485 port)

6.1. Digital Input Wiring

The PLC input (X) is external power supply DC24V sink type (passive NPN). The input signal is isolated from the power supply. When in use, it is necessary to connect COM (S/S) to the 24V positive of the power supply.

Equivalent circuit diagrams for Coolmay HMI PLC digital input, relay output, transistor output, and customized thermocouple wiring for 43C and 70C models.
Figure 10: Digital Input Wiring (Figure 7 Input wiring)

6.2. Digital Output Wiring

The PLC output equivalent circuit of the transistor output type is shown in Figure 9. The output terminals are in several groups, and each group is electrically isolated. The output contacts of different groups are connected to different power circuits.

Equivalent circuit diagrams for Coolmay HMI PLC digital input, relay output, transistor output, and customized thermocouple wiring for 43C and 70C models.
Figure 11: Relay Output Equivalent Circuit (Figure 8) and Transistor Output Equivalent Circuit (Figure 9)

For transistor output (Y0, Y1 of 43C and Y0-Y13 of 70C), the output wiring load is 0.1A, and the wiring method is DC24V active NPN output. Y0-Y13 are fixed as MT output. The wiring is connected to the positive pole of the power supply, and the Y terminal is connected to the negative pole. The output contacts can be connected to positive or negative.

Equivalent circuit diagrams for Coolmay HMI PLC digital input, relay output, transistor output, and customized thermocouple wiring for 43C and 70C models.
Figure 12: Transistor Output Equivalent Circuit (Y0, Y1 of 43C and Y0-Y13 of 70C) (Figure 10)

6.3. Analog Wiring

Wiring diagrams for inductive load absorption, PLC analog input/output, and pulse output for Coolmay MX3G HMI PLC.
Figure 13: PLC Analog Wiring (Figure 13)

6.4. Thermocouple Wiring

Equivalent circuit diagrams for Coolmay HMI PLC digital input, relay output, transistor output, and customized thermocouple wiring for 43C and 70C models.
Figure 14: Customized 43C Thermocouple Wiring (Figure 14) and 70C Thermocouple Wiring (Figure 15)

6.5. Inductive Load Absorption Circuit

Wiring diagrams for inductive load absorption, PLC analog input/output, and pulse output for Coolmay MX3G HMI PLC.
Figure 15: Inductive Load Absorption Circuit (Figure 11)

6.6. Pulse Output Wiring

Wiring diagrams for inductive load absorption, PLC analog input/output, and pulse output for Coolmay MX3G HMI PLC.
Figure 16: Pulse Output Wiring (Figure 12)

7. Operating Instructions

The Coolmay MX3G series features a user-friendly HMI for controlling and monitoring your industrial processes. The system offers full functions, is customizable, and supports system upgrades.

7.1. HMI Operation

The HMI provides a touch-screen interface for navigating menus, setting parameters, and viewing real-time data. The video demonstration (Figure 2) shows typical interactions with the HMI, including accessing system settings, input/output monitoring, and data management screens.

7.2. Programming Software

  • PLC Programming: The PLC component is programmed using GX Developer 8.86 or GXWorks2 software. It supports Ladder Diagram and SFC languages.
  • HMI Programming: The HMI component is programmed using TP HMI's programming software, TPWorks.

For detailed programming instructions, please refer to the respective software manuals.

8. Maintenance

Regular maintenance ensures the longevity and reliable operation of your HMI PLC unit.

  • Cleaning: Keep the HMI screen and unit exterior clean. Use a soft, dry cloth. Avoid abrasive cleaners or solvents.
  • Environmental Conditions: Ensure the operating environment adheres to the specified temperature (0°C to 50°C) and humidity (5% to 95% RH, non-condensing) ranges.
  • Wiring Integrity: Periodically check all wiring connections for tightness and signs of wear or damage.
  • Firmware Updates: Check the manufacturer's website for any available firmware updates to ensure optimal performance and access to new features.

9. Troubleshooting

If you encounter issues with your HMI PLC, refer to the following common troubleshooting tips:

  • Unit not powering on: Verify the 24V DC power supply is correctly connected and providing the required voltage and current. Check for loose connections.
  • Abnormal operation/smell: Immediately disconnect power if the unit emits a peculiar smell or abnormal sound. Do not attempt to operate it until the cause is identified and resolved by qualified personnel.
  • Interference issues: Ensure proper grounding of the FG terminal. Use shielded cables for communication and high-frequency signals. Maintain a distance of at least 10cm between power cords and communication cables.
  • Unstable Analog Input: If analog input is unstable, consider adding a 104pF capacitor connected to an external magnetic ring filter to improve anti-interference.
  • Programming/Communication Errors: Double-check your programming logic and communication settings in GX Developer/GXWorks2 and TPWorks. Ensure correct cable connections and protocol settings (MODBUS RTU, RS485, RS232).

10. User Tips

Based on common user inquiries and experiences, here are some helpful tips:

  • Software Demos: If you require a demo version of the HMI or PLC programming software, please contact Coolmay customer support directly.
  • Motor Control: The high-speed pulse output capabilities make this unit suitable for controlling motorized components, such as a motorized stop for a cutting machine (tronzadora). Ensure your programming correctly utilizes these features.
  • Language Support: The HMI software (TPWorks) typically supports multiple languages. Check the software settings for available language options, including English.
Important user tips and precautions for installing and using the Coolmay MX3G HMI PLC, including power supply, mounting, wiring, and general safety.
Figure 17: Additional User Tips and Precautions

11. Warranty and Support

For warranty information, technical support, or service inquiries, please contact your vendor or Coolmay customer service. Ensure you have your product model and serial number available when contacting support.

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