What It Is and Where It Fits
The QD75P4N is a 4-axis positioning unit for the MELSEC Q-series PLC rack. It generates pulse trains to drive stepper or servo drives via open collector outputs, up to 200 k pulse/s per axis. Each axis can store 600 positioning data points, enough for multi-step motion profiles without constant PLC intervention. The unit sits on the Q bus and is addressed via the PLC's intelligent module configuration.
Key Ratings and What They Mean for Your Design
The module outputs up to 200 k pulse/s via open collector outputs. It consumes 0.36 A from the backplane and supports increment or absolute trajectory control.
Integration and Wiring Notes
The module weighs 3 kg. It consumes 0.36 A from the backplane. The open collector outputs require external pull-up resistors. It supports increment or absolute trajectory control.