Mitsubishi MELSEC Q Motion CPU

The Mitsubishi MELSEC Q Series Motion CPU, represented by the Q06UDEHCPU, is a high-performance dedicated motion control processor designed to coordinate up to 32 servo axes simultaneously at a 0.88 ms scan cycle with synchronised pulse output via the SSCNET III/H fibre-optic servo network. As a CPU module within the MELSEC Q Universal high-speed main base, the Q06UDEH operates alongside process CPU, network CPU, and standard PLC CPU modules in a single backplane, creating a multi-CPU system architecture that Saudi Arabia's most demanding automation projects — continuous paper mill drives, battery electrode calendering, and glass cutting lines — rely upon for the deterministic multi-domain control that standalone PLCs cannot deliver. The 0.88 ms axis update cycle enables dynamic axis parameter changes (speed, torque limit, gear ratio) within the motion program scan, supporting advanced functionality such as flying shear synchronisation, electronic gearbox control, and cam profile interpolation that would require a specialised motion controller from any other manufacturer.

The Q06UDEH's built-in CPU-to-CPU communication over the MELSEC Q bus achieves 0.88 ms data transfer between the motion CPU and a co-resident iQ-R or Q Series PLC CPU — enabling the motion program and the process program to share data at the servo axis scan rate without any Ethernet latency. This architectural advantage is critical in Saudi petrochemical continuous process plants, such as the polypropylene pelletising lines at SABIC's Ibn Zahr complex in Jubail, where the tension control loop between the Motion CPU (managing the servo-driven pull rolls) and the process CPU (managing the extruder screw and die head temperature) must exchange data at sub-millisecond intervals to prevent web breaks and product reject events. The SSCNET III/H fibre interface eliminates EMI-induced position errors in the electrically noisy power cable trays common in Saudi industrial switchrooms.

The Saudi industrial modernisation agenda under Vision 2030 is creating significant demand for legacy MELSEC Q motion system retrofits: existing Q170MCPU motion controllers are being replaced with Q06UDEH-based systems at Yanbu and Jubail petrochemical facilities because the newer CPU's larger program memory (160K steps) and faster scan cycle enable process recipes and motion profiles to be consolidated from multiple motion CPUs into a single unit, reducing system complexity and spares cost. Similarly, the glass manufacturing sector — Rawabi and Saudi Glass — has standardised on Q Series Motion for their float glass cutting and offline coating lines, citing the deterministic synchronisation between the servo pull roll drives and the linear glass-cutting axis as unavailable from any competing PLC-based motion architecture.

Razz Middle East provides Q Series Motion CPU sizing, SSCNET III/H network design, and cam profile development services for new and retrofit projects across Saudi Arabia. Our motion application engineers are available on-site in Riyadh, Jubail, and Yanbu for commissioning support. Local stock of Q06UDEHCPU and associated servo amplifier (MR-J4 SSCNET) is maintained for rapid delivery. SAR pricing with 12-month warranty is available within 4 hours of RFQ receipt.