Mitsubishi Electric Q02UCPU MELSEC Q Series PLC CPU Module

SKU Q02UCPU

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12-month warranty
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Manufacturer: Mitsubishi Electric
Product No.: Q02UCPU
Country of origin:United States
Product Type: PLC CPU Modules
Payment: T/T, Western Union
Weight: 3000g
Dimensions: 120 mm x 110 mm x 40 mm
Shipping port: Xiamen
Warranty: 12 months

Engineered for high-speed sequence control within demanding industrial environments, the Mitsubishi Electric Q02UCPU serves as a highly reliable central processing unit for the MELSEC Q Series automation platform. This Universal Model CPU delivers optimized instruction execution speeds and expanded memory capacity to handle complex automation tasks, making it a cornerstone for modular control architectures.

Key Features

High-Speed Processing: Achieves a basic instruction execution speed of 40 nanoseconds (LD instruction), minimizing scan cycle times.
Expanded Memory: Features a 20k-step (80 KB) program capacity alongside dedicated multi-port memory structures.
Dual Communication Ports: Equipped with built-in USB (Mini-B) and RS-232 interfaces for direct programming, diagnostics, and peripheral interfacing.
Scalable I/O Architecture: Supports up to 2048 local I/O points and up to 8192 remote I/O points across network links.
Multi-CPU Support: Compatible with multi-CPU configurations, allowing up to four CPUs to reside on a single Q-series base unit for distributed processing.

Industrial Applications

Automotive assembly lines and robotic cell synchronization.
High-speed packaging, filling, and labeling machinery.
Water treatment facilities and distributed pump station control.
Semiconductor fabrication tool handling and cleanroom automation.

Technical Specifications

Parameter	Specification
Manufacturer	Mitsubishi Electric
Model	Q02UCPU
Series	MELSEC-Q Series (Universal Model)
Program Capacity	20k steps (80 KB)
LD Instruction Speed	40 ns (0.04 microseconds)
Local I/O Points	2048 points
Total I/O Points (Local + Remote)	8192 points
Internal Current Consumption (5 VDC)	0.33 A
Communication Interfaces	USB (Mini-B), RS-232 (6-pin Mini-DIN)
Memory Type	Flash ROM, SRAM (via optional memory card)
Mounting Type	Base unit rack mount
Country of Origin	Japan
Shipping Weight (Calculated)	0.35 kg
Package Dimensions (Calculated)	120 mm x 110 mm x 40 mm

Connections and Interfaces

Connector / Port	Interface Type	Function / Assignment
USB Port	Mini-B Female	High-speed programming, monitoring, and diagnostics via GX Works2 / GX Developer.
RS-232 Port	6-pin Mini-DIN	Serial connection for HMIs, legacy programming tools, or point-to-point serial communication protocols.

Empirical Engineering Insights

Alternative Models & Compatibility

The Q02UCPU is part of the "Universal" Q-series lineup, which directly replaces older "Basic" and "High-Performance" CPUs such as the Q02CPU. Note that Universal models require a compatible Universal-ready base unit (e.g., Q33B-E, Q38DB) to utilize advanced features and high-speed bus communication. Ensure your programming software is updated to GX Works2 or GX Developer Version 8.76D or later to support the Universal instruction set.

Application Pitfalls & Engineering Notes

When designing multi-CPU systems, calculate the total 5 VDC current draw. The Q02UCPU draws 0.33 A internally. If paired with high-density I/O modules or multiple coprocessor modules, verify that the system power supply module (e.g., Q61P or Q62P) has sufficient overhead to prevent voltage drops during peak processing cycles.

Commissioning & Wiring Tips

When utilizing the RS-232 serial interface in electrically noisy environments (near VFDs or high-power contactors), always use double-shielded serial cabling. Ground the cable shield at the PLC chassis ground terminal only to prevent ground loops that can corrupt serial data packets.

Installation Guidelines

CRITICAL WARNING

Always completely de-energize the main power supply to the base unit before inserting or removing the CPU module. Hot-swapping the CPU can cause permanent damage to the internal ASIC chips, corrupt the system memory, or cause unpredictable machinery behavior.

1

Ensure the base unit is securely mounted to the DIN rail or control panel backplate and grounded correctly.

2

Insert the lower module fixing projection of the Q02UCPU into the module guide hole of the base unit.

3

Push the top of the module firmly against the base unit until it is fully seated in the connector.

4

Tighten the module fixing screw to a torque of 0.36 to 0.48 N·m to ensure mechanical stability and proper grounding.

FAQ

What software is required to program the Q02UCPU?

The module is programmed using Mitsubishi Electric's GX Works2 or GX Developer (Version 8.76D or later). Connection is established via the built-in Mini-USB or RS-232 ports.

Does the Q02UCPU have an integrated Ethernet port?

No, the Q02UCPU does not feature a built-in Ethernet port. It relies on USB and RS-232 for direct communications. For built-in Ethernet, consider models like the Q02UDVCPU or Q03UDECPU.

What is the internal current consumption of this CPU module?

The Q02UCPU draws 0.33 A from the 5 VDC internal bus supplied by the base unit power supply module.

Can I use older Q-series base units with this Universal CPU?

Universal CPUs require compatible base units (such as the Q3_DB or Q3_B series) to utilize high-speed communication paths. Check your base unit part number for compatibility before installation.

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30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
12-Month Warranty: Every industrial component is backed by our technical warranty.

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Global Express Shipping

Standard Delivery: 4-6 Business Days via DHL, FedEx, and UPS.
Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
Worldwide Coverage: Serving over 150 countries, including rapid delivery to Saudi Arabia and UAE.

Returns & Warranty

30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
12-Month Warranty: Every industrial component is backed by our professional technical warranty.

Orders are processed and delivered Monday-Friday (excluding public holidays).

For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .

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