Overview

This document details the specifications, features, and control architecture of the LAD-01 Series motor driver designed specifically for ultra-miniaturized linear actuators. It supports 3-phase sine wave PWM control and offers parameter setting via USB serial communication.

Key Features

• 3-phase sine wave PWM driver optimized for linear actuators.
• Two preprogrammed gain settings switchable via input signals.
• USB serial communication for parameter and gain configuration.
• Supports open collector and line driver output types (LAD-01C-012 and LAD-01D-012 respectively).

Control Block Diagram

The control system includes components such as a microcontroller, PWM output, current detection circuits, encoder inputs, position/speed/current controllers, and interfaces for input/output control and parameter setting.

Specifications

Input Signal Types

• Selectable via parameter setting:
• 2-pulse system (CW/CCW)
• 1-pulse system (Pulse/Direction)
• 2-phase pulse system (photo-coupler isolated)

Control and Adjustment Functions

• Reset input: Alarm and residual pulse reset (Low active)
• Limit sensor input: LSF (CCW prohibition), LSR (CW prohibition)
• Gain low input: Reduces gain to minimize vibration at stop (Low active)
• Deviation clear: Residual pulse reset (Low active)
• Gain switching: Switch between two preprogrammed gain sets (Low active)
• Origin search start: Executes origin search in preset mode (Low active)

Output Signals and Indicators

• Power (PWR): Lights when +24V power is supplied
• Servo ON (SV): Lights when servo is active
• Alarm (ALM): Lights on alarm occurrence
• In-position (INP): Lights when residual deviation is within set range (Low active)
• Origin search completion (ORZ): Lights when origin search completes
• Alarm output: Triggered on encoder disconnection, full torque, full count, or overheat; alarm type indicated by LED blink count
• Encoder output: RS-422 equivalent signals φA, φB, φZ
• Limit output: Photocoupler output of limit sensor inputs
• Ready output: Indicates servo ON and command pulse input readiness

Environmental and Usage Conditions

• Operating temperature range: 0 to 50°C
• Operating humidity: 10 to 85% RH without condensation
• Storage temperature: -20 to 85°C without condensation

Summary

The LAD-01 Series driver is a specialized, compact motor driver for linear actuators featuring precise position control, flexible input signal compatibility, and comprehensive status outputs. It supports parameter tuning via USB and includes safety and operational features such as limit sensors, alarm resets, and gain switching to optimize performance and reliability in industrial applications.