Coolmay industrial automation equipment and controllers

We supply Coolmay QM3G and EX3G HMI+PLC All-in-One controllers, L02 modular PLCs, TK/MT operator touch panels, and expansion modules directly from Chinese manufacturing facilities.

QM3G series HMI+PLC All-in-One controllers

The QM3G series integrates a color touchscreen HMI and an industrial PLC in a single enclosure. The controller supports the FX3G instruction set and is programmed in GX Works2 or GX Developer. 0-inch screens with tailored discrete and analog I/O configurations.

TFT display sizes: 4.3" (480×272), 7.0" (800×480), and 10.0" (1024×600).
Discrete I/O capacity: from 12 to 44 points with relay (MR) or transistor (MT) outputs.
Analog channels: up to 12 inputs (AD) and 8 outputs (DA) for 0–10V, 4–20mA, or PT100.
Communication: Mini USB programming port, RS232, RS485, and optional Ethernet.

EX3G integrated PLC+HMI controllers

EX3G controllers are engineered for compact automation machines requiring shallow installation depth inside control cabinets. The HMI displays up to 60,000 colors, while the internal PLC executes hardware high-speed counting and pulse generation for stepper and servo drives.

Display variants: 4.3, 5.0, 7.0, and 10.0 inches with IP65-rated front panels.
High-speed inputs up to 60 kHz and transistor pulse outputs up to 100 kHz.
Built-in PID control loops dedicated to temperature, flow, and pressure regulation.
Detachable screw and spring-cage terminal blocks for rapid replacement.

CX3G and MX3G All-in-One controllers

The CX3G and MX3G series are designed for packaging, extrusion, and CNC machinery demanding high I/O signal density. Their modular chassis accommodates internal communication and analog daughterboards without altering exterior panel dimensions.

Expanded discrete channel capacity: up to 48 inputs and 48 outputs per unit.
Hybrid output configurations: relay channels for power loads and transistors for PWM.
Dedicated CANopen and Modbus RTU/TCP interfaces for variable frequency drives.
Non-volatile program and retentive register memory backed by lithium battery.

L02 series modular PLC systems

The L02 series is a compact rackless modular PLC platform suited for centralized and distributed electrical cabinets. The L02-M24R/T CPU modules connect directly to I/O expansion slices via a high-speed internal bus without external ribbon cables.

Base CPU modules: L02-M24R (relay outputs) and L02-M24T (transistor outputs).
Scalability limit: up to 16 expansion modules per rack, addressing up to 512 I/O points.
Onboard ports: RS232, RS485, and 10/100 Mbps high-speed Ethernet interface.
Standard 35 mm DIN-rail mounting with rigid interlocking side connectors.

TK series touch HMI panels

The TK operator interface range (including TK6070 and TK6100 models) is built for clear process visualization and machine supervision. Equipped with bright LED-backlit TFT displays, TK panels support extensive driver libraries for third-party automation controllers.

Widescreen displays in 7.0 and 10.1-inch form factors up to 1024×600 resolution.
High-efficiency ARM processor delivering rapid touch response and page transitions.
Universal communication drivers: Siemens S7-200/300/1200, Omron, Delta, and Modbus.
Screen programming using Coolmay View with comprehensive recipe and macro tools.

MT series industrial HMI displays

The MT family consists of rugged operator panels designed for harsh industrial settings. Resistant to electrical noise, vibration, and 24V DC power fluctuations, they operate reliably on metalworking machines, plastics processing, and assembly lines.

Front bezel sealed to IP65 with durable polyester overlay for grease and dust protection.
Dual serial ports: COM1 (RS232/RS485) and COM2 (RS485) for concurrent master loops.
Project download via standard USB Type-B interface or USB flash storage drive.
Integrated real-time clock (RTC) with timestamped alarm logging and trend charts.

Discrete and analog I/O expansion modules

Coolmay I/O expansion modules extend signal capacity for L02 series PLCs and All-in-One controllers. The range comprises optical-isolated digital inputs (DI), relay and transistor digital outputs (DO), and high-resolution voltage and current measurement modules.

Discrete modules: 8, 16, and 32 channels featuring optical galvanic isolation.
Analog input modules (AI): 4 and 8 channels switchable between 0–10V, 0–20mA, and 4–20mA.
Analog output modules (AO): 2 and 4 channels with 12-bit digital-to-analog precision.
Per-channel LED diagnostic indicators visible on the front module cover.

Communication cables and interface boards

Dedicated communication adapters and programming cables interface Coolmay All-in-One units with plant fieldbuses and engineering workstations. Heavy-duty connectors ensure stable communication amidst severe industrial machine vibrations.

Programming cables USB-SC09-FX and USB-Mini for PLC ladder logic upload/download.
Internal RS485 and CAN expansion daughterboards for QM3G and EX3G chassis.
Pre-assembled serial patch cables linking controllers to variable frequency drives.
Shielded twisted-pair construction providing robust immunity to inverter EMI noise.

Temperature measurement modules (PT100, thermocouples)

Dedicated Coolmay temperature acquisition modules are installed on injection molding machines, drying ovens, extruders, and heat-treatment furnaces. They process raw signals from RTDs and thermocouples without requiring external signal transmitters.

RTD sensor support: platinum PT100 and PT1000 elements, plus NTC thermistors.
Thermocouple inputs: types K, J, E, and S with cold-junction compensation.
High measurement resolution: temperature readings down to 0.1 °C increments.
Integrated 50/60 Hz industrial mains noise suppression and digital filtering.

Spare components and repair parts for All-in-One units

When front screens suffer mechanical impact or individual I/O channels fail, Coolmay replacement components restore machine functionality. Sourcing targeted spare parts eliminates the expense of replacing entire controllers and avoids system reprogramming.

Replacement 4-wire resistive touch panels for 4.3, 7.0, and 10.0-inch screens.
TFT LCD display panels with matched LED backlight ribbon cables.
Miniature electromagnetic relays and power transistor ICs for I/O repair.
Front-bezel sealing gaskets and panel-mount retaining brackets.

Decoding Coolmay All-in-One part numbers

Coolmay All-in-One model designations convey complete hardware and interface configurations. 0-inch display, FH indicates resolution, 24 specifies I/O points, MT identifies transistors, and 485P signifies an RS485 port.

To select an exact replacement unit, provide a clear photograph of the rear nameplate. Secondary suffixes like 4AD2DA-PT indicate analog channels (four PT100 inputs and two outputs). A single mismatched character in the code may cause connector incompatibility.

Touch screen glass replacement vs full unit swap

When damage is limited to the resistive touch screen glass while the CPU runs and the LCD displays graphics, replacing only the touch overlay is the most practical solution. This restores machine operation without reprogramming internal PLC logic.

If the unit suffers power supply burnout or fails to boot, complete All-in-One replacement is required. Before dismantling the defective controller, back up the ladder logic and HMI project via PC upload or locate the original engineering archive.

Engineering software and PLC project transfer

Coolmay QM3G and EX3G controllers are instruction-compatible with Mitsubishi FX3G architecture. Control logic is engineered and maintained using standard GX Works2 or GX Developer software. Programs upload and download through the programming serial port.

When replacing a controller with an identical model, the program uploads directly without altering ladder steps or bit assignments. If migrating across product generations, internal communication registers mapping to HMI screens should be re-verified.

HMI development with Coolmay View

Visual operator interfaces are designed using Coolmay View or mView configuration software. The package provides libraries of buttons, gauges, alarm logs, multi-level password controls, and trend curves. Project compilation is transferred via USB or Ethernet connection.

Compiled HMI runtime data resides in onboard non-volatile Flash storage. Production facilities should keep up-to-date screen project files in their technical archives to enable rapid recovery in case of hardware failure.

Analog sensor and thermocouple connections

Coolmay controllers feature optional onboard analog I/O channels supporting 0–10V, 0–20mA, 4–20mA, and direct inputs for PT100 RTDs or K/J thermocouples. Analog signals are digitized by built-in converters and mapped directly into special data registers.

To protect precision measurement circuits from high-frequency inverter interference, shielded twisted-pair cables must be routed separately from motor power leads, with cable shields grounded at a single point inside the control panel.

Pre-order checklist for replacement controllers

Before placing an order for a Coolmay controller or expansion module, verify five parameters. Check the full catalog number including option suffixes and confirm logic supply voltage (typically 24V DC). Specify output stage type: MR relays switch up to 220V AC, while MT transistors require 24V DC.

Finally, note the analog channel count and serial or Ethernet ports.

Attach clear photos of the rear equipment nameplate and front panel layout. Our engineering team cross-checks model codes against current factory documentation to guarantee full hardware interchangeability.

Configuring automation systems for new machines

When developing new automation cabinets based on Coolmay technology, choosing between QM3G/EX3G All-in-One controllers and the modular L02 system depends on cabinet dimensions and operator interaction requirements.

If local visualization is essential, an All-in-One unit eliminates separate display wiring and reduces cabinet cutout labor.

For complex machinery requiring distributed I/O, more than 60 field points, or blind control enclosures without doors, the L02 modular DIN-rail PLC is the preferred architecture. Remote TK series operator panels can be connected across RS485 or Ethernet lines.

To receive an equipment specification, submit your functional requirements, including field sensor counts, motor starter interfaces, and VFD communication protocols. We prepare comprehensive project hardware packages complete with power supplies and interface cables.

, Ltd. Prices, inventory availability, and lead times are calculated per inquiry and confirmed in formal quotations. Third-party software licenses are not sold through this page.