Description

Designed for high-precision pulse acquisition within the MELSEC-Q PLC environment, the QD63P6 high-speed counter module offers robust multi-channel monitoring capabilities for industrial motion control and positioning applications. This intelligent function module handles high-frequency input signals independently of the PLC CPU scan cycle, ensuring highly accurate real-time process tracking and event triggering.

The QD63P6 supports up to six independent counter channels, accepting various pulse configurations including 1-phase, 2-phase, and CW/CCW pulse trains. By integrating seamless 32-bit signed binary counting with built-in match detection and interrupt functions, this unit facilitates rapid response to predetermined counts. It installs directly onto any standard MELSEC-Q series base unit, drawing power from the system backplane while providing a high-density 40-pin interface for external signals.

Features

• Multi-Channel Capacity: Configured with six independent channels to handle multiple encoder or sensor inputs simultaneously.
• Adjustable Counting Speeds: Dynamic speed change settings available up to 200 kpps, optimizing performance for variable process requirements.
• Versatile Phase Modes: Supports 1-phase input (1x/2x multiplication), 2-phase input (1x/2x/4x multiplication), and CW/CCW differential pulse patterns.
• 32-Bit Range: Robust count range tracking from -2,147,483,648 to 2,147,483,647 with ring counter and UP/DOWN preset functionality.
• Hardware Interrupts: Integrated coincidence detection instantly triggers CPU interrupts when the count matches predefined target values.

Applications

• Rotary encoder feedback and angular positioning in packaging systems.
• Conveyor speed synchronization and product sorting lines.
• Flow meter pulse integration in process automation and fluid distribution.
• High-speed length measurements and cutting-to-length machinery.

Technical Specifications

Connections and Interfaces

Installation Guidelines

• Always switch off the external power supply and the PLC main power before mounting or removing the QD63P6 module from the base unit.
• Ensure the module fixing projection is securely locked into the module guide hole of the base unit before tightening the module fixing screw.
• Use shielded twisted-pair cables for all high-speed pulse inputs to protect counting accuracy from electromagnetic interference (EMI).
• Route the 40-pin external signal cables separately from high-voltage or high-current power cables to prevent induced noise.