1. Introduction
This manual provides essential information for the installation, operation, and maintenance of the Coolmay QM3G-70KFH HMI PLC All-In-One unit. This integrated device combines a Human Machine Interface (HMI) with a Programmable Logic Controller (PLC), offering a compact and efficient solution for industrial automation control.
2. Features
- Integrated HMI and PLC functionality in a single unit.
- 7-inch TFT LCD touch screen for intuitive operation.
- Compatible with Mitsubishi programming software: GX Developer, GX Works2, and GX8.52/8.86.
- Supports PID auto-tuning function for precise control.
- Features PWM modulation capabilities.
- Various I/O configurations available (Relay and Transistor outputs).
- Multiple communication ports including RS232 and RS485.
3. Packing List
Upon unpacking, please verify that all items listed below are present and in good condition:
- 1x HMI PLC All-In-One Unit (QM3G-70KFH model)
Note: Additional accessories such as cables or mounting hardware may be sold separately or included depending on the specific package. Please refer to your purchase order for details.
4. Setup and Installation
4.1 Physical Installation
The QM3G-70KFH unit is designed for panel mounting. Ensure adequate space and ventilation around the unit. Refer to the dimension diagram for precise cutout requirements.
Cutout Size for QM3G-70KFH: 217*154mm
4.2 Wiring and Connections
Connect the power supply, input/output devices, and communication cables to the appropriate terminals on the rear of the HMI PLC. Ensure all connections are secure and follow local electrical codes.
The diagram above shows typical connection points including power input, digital inputs (DI), digital outputs (DO), analog I/O, and serial communication ports (RS232, RS485). Refer to the specific model specifications for exact pinouts and wiring details.
- Power Supply: Ensure the correct DC voltage is supplied as per specifications.
- I/O Wiring: Connect sensors, switches, and actuators to the digital and analog I/O terminals. Pay close attention to whether outputs are relay or transistor type.
- Communication: Use RS232 or RS485 ports for communication with other devices or for programming.
5. Operating Instructions
5.1 Initial Power-Up
- After completing all wiring, apply power to the HMI PLC unit.
- The unit will boot up, and the HMI touch screen will display the configured interface.
- Observe the RUN and PWR indicators on the unit. PWR should be steadily lit, and RUN should indicate operational status.
5.2 HMI Touch Screen Operation
Interact with the system using the touch screen. The interface is designed for user-friendly control and monitoring of your automation process. Common elements include:
- Buttons: Tap on virtual buttons (e.g., "Start-u", "User", "Touch") to initiate actions or navigate screens.
- Data Displays: View real-time data, such as sensor readings or process values.
- Input Fields: Enter numerical or textual data as required by the application.
- Alarms/Indicators: Monitor system status and acknowledge alarms.
5.3 PLC Programming
The integrated PLC is programmable using Mitsubishi-compatible software. You will need a PC with the appropriate software (GX Developer, GX Works2, or GX8.52/8.86) and a suitable programming cable (typically USB or serial) to connect to the HMI PLC.
- Install the Mitsubishi programming software on your PC.
- Connect the PC to the HMI PLC via the designated programming port (e.g., USB or RS232).
- Open the programming software and establish communication with the PLC.
- Develop or load your ladder logic program.
- Download the program to the PLC.
- Monitor and debug the PLC program as needed.
The PLC supports advanced functions such as PID auto-tuning and PWM modulation, which can be configured within the programming environment.
6. Maintenance
- Cleaning: Regularly clean the touch screen with a soft, lint-free cloth. Use a mild, non-abrasive cleaner if necessary. Avoid harsh chemicals.
- Ventilation: Ensure that the ventilation openings are clear of dust and debris to prevent overheating.
- Firmware Updates: Check the manufacturer's website periodically for firmware updates to ensure optimal performance and access to new features.
- Backup Programs: Regularly back up your PLC programs and HMI projects to an external storage device to prevent data loss.
- Connection Checks: Periodically inspect all wiring connections for looseness or corrosion.
7. Troubleshooting
- No Power: Check power supply connections and voltage. Ensure the power indicator (PWR) is lit.
- Screen Unresponsive: Try restarting the unit. If the issue persists, check for physical damage to the touch screen.
- PLC Not Running: Check the RUN indicator. If it's not lit or flashing, verify the PLC program is loaded correctly and there are no critical errors. Use the programming software to diagnose.
- Communication Issues: Verify cable connections, port settings (baud rate, parity, data bits, stop bits), and driver installations on the PC.
- Incorrect I/O Behavior: Check wiring to sensors/actuators, verify I/O status in the HMI or programming software, and ensure the PLC program logic is correct.
For persistent issues, consult the detailed programming software manuals or contact technical support.
8. Specifications
The Coolmay QM3G-70KFH series offers various configurations. Below are the general specifications for the 7-inch models, followed by specific model details.
General Specifications (QM3G-70KFH)
| Parameter | Value |
|---|---|
| Model | QM3G-70KFH |
| Display Screen | 7" TFT LCD screen |
| Resolution (Pixels) | 800*480 |
| Dimension | 226*163*36mm |
| Cutout Size | 217*154mm |
| Display Size | 154*87mm |
| Brightness | 300cd/m² |
| Contrast Ratio | 400:1 |
| Backlight | LED |
| Display Color | 65536 true color |
| Touch Type | 4-wire resistive panel |
| Touch Accuracy | Length(X)±1.5% Width(Y)±1.5% |
| ROM (Flash) | NOR Flash 16MB |
| RAM | 64MB |
| CPU | 408MHz |
| USB Device | USB 2.0*1 (Type-C) |
| Serial Port | RS-232 or RS-485 |
| I/O Type | Max 30DI/30DO (28 MR) |
| I/O Type (Transistor output) | low level NPN, COM connected to negative; Relay output: normally open dry contact. Input: passive NPN, common terminal isolation. |
| DO Type | Relay MR or MOS (Relay output: max load 5A/ MOS output: max load 2A) (MR) or transistor (MT, Y0-Y3 are MOS) or mixed (MRT) (Relay output: max load 5A/ transistor output: max load 500mA) |
| High-speed counting | 6 single-phase 60KHz, or 2 AB (Z) phase 60KHz + 1 AB phase 10KHz |
| High-speed pulse | Conventional 8 channels: Y0-Y3 is 100KHz, Y4-Y7 is 10KHz; high-speed counting + high-speed pulses 480KHz |
| Analog Input type | E/K/S/T/J thermocouple (support negative temperature)/PT100/PT1000/NTC10K/NTC100K/0-10V/0-5V/0-20mA/4-20mA or mixed (6 and 10 inch optional -5V-5V and -10V-10V) |
| Analog Output type | 0-10V/0-5V/0-20mA/4-20mA or mixed optional |
| Analog Max I/A/2AO | Max 16AI/8AO |
| COM Port | Default 2 PLC programming ports (1 Type-C, faster download speed); 1 RS232 programming port (Optional RS485 for HMI and RS232 on PLC will be unavailable) |
Specific QM3G-70KFH Model Configurations
- QM3G-70KFH-24MR: 7 inch HMI PLC all in one, 12DI 12DO, Relay output. Optional maximum 16 Analog inputs and 8 Analog outputs, 1 RS232, 1 RS485.
- QM3G-70KFH-44MT: 7 inch HMI PLC all in one, 24DI 20DO, transistor outputs. Optional maximum 16 Analog inputs and 8 Analog outputs, 1 RS232, 1 RS485. Features 4 High-speed pulse outputs (100KHz, Y0-Y3) and 4 High-speed pulse outputs (10KHz, Y4-Y7).
- QM3G-70KFH-60MT: 7 inch HMI PLC all in one, 30DI 30DO, transistor outputs. Optional maximum 5 Analog inputs and 2 Analog outputs, 1 RS232, 1 RS485. Features 4 High-speed pulse outputs (100KHz, Y0-Y3) and 4 High-speed pulse outputs (10KHz, Y4-Y7).
- QM3G-70KFH-44MRT(18R2T): 7 inch HMI PLC all in one, 24DI 20DO (Maximum 18 relay outputs, and Y22 and Y23 are fixed as transistor outputs). Relay output. Optional maximum 16 Analog inputs and 8 Analog outputs, 1 RS232, 1 RS485.
- QM3G-70KFH-60MRT(28R2T): 7 inch HMI PLC all in one, 30DI 30DO (Maximum 28 relay outputs, and Y22 and Y23 are fixed as transistor outputs). Optional maximum 5 Analog inputs and 2 Analog outputs, 1 RS232, 1 RS485.
9. User Tips
- When programming, always save your work frequently to avoid loss of progress.
- Familiarize yourself with the specific Mitsubishi software version you are using, as features and interfaces may vary slightly.
- For complex automation tasks, consider breaking down the PLC program into smaller, manageable subroutines.
- Utilize the high-speed pulse outputs for applications requiring precise motor control or positioning.
- Leverage the PID auto-tuning feature for optimizing control loops in temperature, pressure, or flow applications.
10. Warranty and Support
For warranty information, technical support, or service inquiries, please contact your vendor or the manufacturer directly. Keep your purchase records handy when seeking support.
Manufacturer: Coolmay (also associated with brand TECNR)
