The QD75MH2 is a Mitsubishi Q-Series positioning module that drives up to 2 axes of servo motors via SSCNET III, with an operation cycle of 1.77 ms—half that of the previous generation. That speed improvement directly reduces positioning time on multi-step moves, which matters for pick-and-place or assembly indexing. It stores 600 positioning data sets per axis, which gives flexibility for complex sequences without constant PLC intervention. The forced stop input (24 VDC, 1 point per module) provides an independent safety channel that can be wired directly to an E-stop circuit. External I/F includes upper/lower stroke limits, proximity dog, and stop/speed-position switching signals—all at 24 VDC. There is also a manual pulse generator interface (A-phase/B-phase, 5 VDC). These are standard for incremental encoder override. The module is designed exclusively for Mitsubishi General-Purpose AC servo amplifiers from the MR-J3-B series, connected via high-speed serial communication.
Integration notes
Mounts in a Q-series backplane. The forced stop input is a single point per module—plan a separate safety relay if multiple modules need coordinated stop logic. The manual pulse generator interface runs on 5 VDC, so ensure the encoder is compatible. SSCNET III cabling uses dedicated optical fiber; maximum distance per cable segment is covered in the manual. No external terminator needed; the module handles termination internally.