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LD77MS4

The Mitsubishi LD77MS4 is a high-performance motion control module designed for the MELSEC iQ-R Series PLC platform. It provides 4-axis servo control with advanced synchronization capabilities, making it ideal for precision automation applications requiring complex motion profiles.

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Key Features & Specifications
1. Basic Specifications
Model: LD77MS4

Series: MELSEC iQ-R Motion Module

Control Axes: 4 axes (simultaneous control)

Communication: SSCNET III/H (optical fiber, 150Mbps)

Compatible Servo Drives: MR-J4 (A/B/W series), MR-J5

Mounting: Installs on MELSEC iQ-R base unit (1 slot required)

2. Motion Control Performance
High-Speed Positioning: Up to 4Mpps (pulses per second)

Interpolation Modes:

Linear/Circular interpolation (2-4 axes)

Helical interpolation (3D motion control)

Advanced Functions:

Electronic cam (synchronized motion profiles)

Gear ratio control (master-slave following)

Position/speed override (real-time adjustment)

3. Programming & Configuration
Software: GX Works3 (Motion Control Edition)

Programming Methods:

Ladder logic (for sequence control)

Motion SFC (for complex motion sequences)

Direct data setting (position/speed tables)

Built-in Motion Instructions:

JOG, PTP (Point-to-Point), Speed Control

Cam profile generation

4. I/O & Feedback
Encoder Feedback: Supports 22-bit absolute/17-bit incremental encoders

External Inputs: Hardware limit switches, DOG signals, etc.

Synchronization Signals: Trigger input for event-based motion

5. Environmental & Mechanical Specs
Operating Temperature: 0°C to 55°C (32°F to 131°F)

Storage Temperature: -25°C to 75°C (-13°F to 167°F)

Vibration Resistance: 4.9 m/s² (10-55Hz)

Protection Rating: IP2X (requires panel installation)