Mitsubishi Electric QD70P4 MELSEC-Q Series Multi-Axis Positioning Module

Description

Designed for high-precision motion control within the MELSEC-Q automation platform, the QD70P4 operates as a dedicated four-axis positioning module. This unit delivers reliable, independent or coordinated control of up to four axes via open collector pulse train outputs, interfacing directly with stepping motor drivers and servo amplifiers. By offloading complex positioning calculations from the main CPU, the module ensures rapid startup response times and stabilizes system scan cycles. It supports both incremental and absolute positioning configurations, making it a critical component for machinery requiring repeatable, synchronized movements across multiple axes.

Features

• Four-axis independent or simultaneous control capability.
• Open collector pulse train output design for compatibility with standard motor drives.
• Automatic trapezoidal acceleration and deceleration profiles to ensure smooth mechanical transitions.
• High-speed start times to optimize throughput in rapid-cycle operations.
• Direct integration with MELSEC-Q series backplanes and configuration software.

Applications

• Packaging and labeling machinery.
• Automated pick-and-place assembly systems.
• Material handling and sorting conveyors.
• XY axis gantry systems and Cartesian robots.

Technical Specifications

Manufacturer	Mitsubishi Electric
Part Number / Model	QD70P4
Series	MELSEC-Q Series
Module Type	Multi-Axis Positioning Module
Number of Control Axes	4 axes
Output Interface	Open Collector
Maximum Pulse Output Speed	200 kpps
Positioning Modes	Position control (Incremental/Absolute), Speed-position switching control
Acceleration/Deceleration Method	Automatic trapezoidal acceleration/deceleration
Internal Current Consumption (5V DC)	0.36 A
External Connection Type	40-pin connector
Operating Temperature	0 to 55 degC
Storage Temperature	-25 to 75 degC

Installation Guidelines

• Mounting: Ensure the PLC rack power is completely shut off before installing or removing the module from the MELSEC-Q base unit. Secure the module using the integrated module fixing screw.
• Wiring: Use shielded twisted-pair cables for pulse output lines to prevent electromagnetic interference (EMI) and crosstalk. Keep signal lines separated from high-voltage AC power lines.
• Grounding: Connect the shield of the pulse signal cable securely to the protective earth (PE) or functional ground terminal on the panel or base unit.

Compliance and Certifications

• CE Mark (EMC Directive)
• UL / cUL Listed
• KC Registration (Korean Certification for electromagnetic compatibility)