MITSUBISHI Q173HCPU Melsec-Q Motion CPU Controller SSCNET III USB

Buy online your MITSUBISHI Q173HCPU Motion CPU Controller SSCNET III USB reference Q173HCPU from our US e-store Cnc-shopping USA, specialist in CNC machine-tools spare parts.

The MITSUBISHI Q173HCPU is a Q Series Motion CPU for Multi-CPU PLC architectures, used to coordinate multi-axis motion over SSCNET III optical fiber with MR-J3 servo amplifiers. Commonly integrated in CNC machine tools and special machines, it serves as the motion control core for synchronized positioning, contouring and axis interpolation in demanding industrial applications.

This motion controller manages up to 32 axes through a high speed synchronous fiber network, providing deterministic communication between the motion CPU and servo drives. The integrated USB interface supports PC communication for configuration and program transfer, which simplifies commissioning, field adjustments and maintenance turnaround on the production floor.

Designed for the MITSUBISHI Q Series backplane in Multi-CPU systems, the unit is well suited for machine-tool retrofits and maintenance programs where precise axis coordination is required. Its SSCNET III link is intended for MR-J3 servo amplifiers, making it a practical choice when sourcing a replacement unit for existing installations that already use this servo platform. Data and program retention can be supported by the external battery Q6BAT, useful when long power-off periods are expected.

Industrial users frequently deploy the Q173HCPU in applications such as turning and milling centers, transfer machines, high speed positioning systems and coordinated gantries. The module’s form factor and interface set allow a straightforward drop-in replacement when an older or defective motion CPU needs to be swapped during a service visit, helping reduce machine downtime.

Reference: Q173HCPU

Manufacturer: MITSUBISHI

Product family: MAZATROL M Plus T Plus spare parts

Key technical data: Q Series Motion CPU for Multi-CPU PLC systems, SSCNET III optical fiber interface for MR-J3 servo amplifiers, up to 32 axes, integrated USB for PC communication, external backup battery Q6BAT supported, manufactured in Japan.

For maintenance teams, this module is typically used to restore axis control after a CPU fault, encoder alarm cascade or motion network error traced back to the controller slot. Keeping a stocked spare on site shortens repair turnaround and helps protect uptime during peak production. It is also a suitable choice for retrofit projects where existing MR-J3 servo networks must be retained.

Units are inspected and tested on dedicated CNC motion test benches or simulators by skilled engineers prior to dispatch. Packaging is prepared for industrial shipment to protect connectors and optics during transport. A warranty is provided to support maintenance and repair operations. Many stocked items ship directly from our Florida facility. Depending on availability, products are commonly dispatched from our Florida warehouse.

When an obsolete part is hard to source or lead times are long, this item can serve as an emergency spare to get machines back online quickly. Cnc-shopping USA can support repair service, exchange service or sourcing for legacy motion control components so older CNC installations remain operational.

Frequently asked questions about Q173HCPU:

Which servo amplifiers are supported on the motion network?
The controller uses SSCNET III over optical fiber and is intended for MITSUBISHI MR-J3 servo amplifiers. Verify drive firmware and network topology during replacement planning.

How many axes can this module control?
It can manage up to 32 axes, depending on the machine configuration and project settings in the motion application.

Does it include a USB port for setup?
Yes. The built-in USB interface supports PC communication for program transfer, diagnostics and maintenance adjustments.

Is a backup battery required?
For extended power-off conditions, fit the external Q6BAT to preserve data and programs as specified in the manufacturer manual.

Where is it typically installed?
It installs on a MITSUBISHI Q Series base in a Multi-CPU PLC system, commonly found in CNC machine tools, special-purpose machines and coordinated motion systems.