Description
Mitsubishi MELSEC-Q Q03UDVCPU – Compact Universal CPU for fast, reliable machine control
The Q03UDVCPU is the “universal” CPU in the MELSEC-Q platform that many OEMs choose for mid-size machines and production cells. From my experience, it strikes a nice balance: high scan performance for precise control, solid memory resources for structured programs, and easy integration with the broad Q-series I/O and network modules. If you’re standardizing on Q-series, this unit typically drops right in and keeps your panel footprint lean.
Our Order Process & Guarantees
- Warranty: 365 days
- Lead time: 1 week when in stock; no more than one month at the latest
- Payment terms: 50% advance payment; full payment before delivery
- Express delivery: FedEx, UPS, DHL
Key Features
- Universal Q-series CPU: Compatible with existing MELSEC-Q bases, power supplies, and I/O modules—ideal for upgrades or volume standardization.
- Fast, deterministic scan: Suits motion-enabled machines, indexing conveyors, and packaging lines where cycle time and repeatability matter.
- Integrated programming ports: Typically includes USB (device) and RS-232C for engineering access, startup, and diagnostics without extra modules.
- Scalable I/O and networks: Expand with digital/analog I/O, motion, and field networks such as Ethernet (via QJ71E71-100) or multi-port serial (QJ71C24N).
- Robust diagnostics: System monitoring, error logs, and status LEDs help shorten troubleshooting time during commissioning and maintenance.
- GX Works2 compatibility: Supports structured programming, device/label usage, and typical Q-series project reuse.
- Panel-space friendly: Single-slot footprint keeps the main rack compact; useful when cabinet depth and width are tight.
Technical Specifications
| Brand / Model | Mitsubishi Electric MELSEC-Q / Q03UDVCPU |
| HS Code | 8537.10 (Programmable controllers) |
| Power Requirements | Supplied by MELSEC-Q power supply via backplane (DC 5 V). Select PSU per total rack load. |
| Dimensions & Weight | Single-slot Q-series module; approx. 27 mm width, standard Q rack height; around 0.2 kg. |
| Operating Temperature | 0 to 55 °C; 5–95% RH, non-condensing (typical for Q-series) |
| Signal I/O Types | CPU processes I/O via Q-series expansion modules (no direct field I/O on CPU). Supports digital, analog, motion, and special modules. |
| Communication Interfaces | USB (device) and RS-232C for programming/diagnostics; expand to Ethernet (QJ71E71-100), CC-Link, or multi-port serial (QJ71C24N). |
| Installation Method | Mounts on MELSEC-Q base unit (main rack); base supports DIN-rail or panel mounting. |
| Programming Software | GX Works2 / GX Developer (typical for Q-series) |
Related or Supporting Products
- Q03UDECPU – Similar CPU with built-in Ethernet; handy when you want native TCP/IP without an extra comm module.
- Q04UDVCPU / Q06UDVCPU – Higher-performance CPUs for larger programs or tighter cycle times.
- QJ71E71-100 – Ethernet interface module if you need multiple Ethernet connections or industrial protocol stacks.
- QJ71C24N-R2 – Multi-port RS-232C/RS-422/485 serial communication module for barcode scanners, drives, or HMIs.
- QX / QY digital I/O – Standard digital input/output modules; choose point density and voltage to match field devices.
- Q64AD / Q64DA – Analog input/output modules for process variables and closed-loop control.
- Q61P / Q62P power supplies – Q-series power modules sized to your total rack load and redundancy needs.
- Q35B / Q38B base units – 5-slot/8-slot main bases for modular expansion in compact control cabinets.
Installation & Maintenance
- Cabinet & mounting: Install the CPU on a MELSEC-Q main base in a clean, dry enclosure. DIN-rail or panel-mount the base per manual and leave space for ventilation above/below the rack.
- Power & grounding: Use a properly sized Q-series power supply; bond the panel ground and follow Mitsubishi grounding topology to minimize noise.
- Wiring practices: Separate high-voltage and signal wiring; route communication cables away from contactors and VFD output cables. You might notice the CPU becomes far less “noisy” in EMI-challenging cabinets when you do this.
- Thermal considerations: Keep the enclosure within 0–55 °C. In many cases, a small fan or heat exchanger improves stability in tightly packed racks.
- Firmware & backups: Maintain backups of the project (GX Works2) and update CPU firmware when recommended by the manufacturer to resolve known issues.
- Routine checks: Inspect connectors and base contacts annually; lightly dust the rack; verify power supply health and comms LEDs. A quick visual check has saved our customers hours during shutdowns.
Quality & Certifications
- Certifications: CE, UL/cUL, and RoHS compliance for typical MELSEC-Q modules (model-dependent; documentation available on request).
- Warranty: 365-day warranty from us; Mitsubishi manufacturer warranty is typically 12 months.
Real-world Usage
A packaging OEM we support swapped a legacy Q-series CPU to the Q03UDVCPU to get faster scan and keep the same base and I/O. Startup was smooth—USB programming for quick downloads, then Ethernet added later with a QJ71E71-100. Cycle time trimmed by a few percent, which—on a 24/7 line—was more meaningful than it sounds.
Reviews
There are no reviews yet.