Pacific Scientific SC755A-001-01

Technical Specifications

• Input Voltage: 115/230 V AC, single-phase, 50/60 Hz
• Continuous Output Current: 30 A RMS
• Peak Output Current: 60 A RMS
• Peak Output Power: 18,000 W
• Maximum Power Dissipation: 300 W
• Feedback Type: 12-bit RDC resolver-to-digital converter (±22 arcmin, 1024 PPR)
• Control Modes: Position, velocity, torque
• Programming Language: ServoBASIC Plus
• User Program Memory: 24 K
• Hardware Limit Inputs: 8 channels
• Operating Temperature Range: 0°C to +45°C
• Cooling Method: Natural convection + built-in fans
• Weight: 18.16 kg

Functional Features

• Fully programmable digital position control
• Digital auto-tuning for optimal servo performance
• IGBT power stage for high efficiency
• Resolver-based feedback for rugged environments
• Encoder emulation output for external monitoring
• 8 dedicated hardware limit inputs
• Multiple I/O points for general purpose use
• Non-volatile memory for parameter storage
• Comprehensive fault protection and diagnostic features

Application Scenarios

• Heavy-duty material handling systems
• Large format printing machinery
• Metal forming and stamping equipment
• Injection molding machine control
• Large CNC axis drives
• Industrial test stand actuation

Material & Structure

• Heavy-duty steel chassis
• Front panel with status indicators and programming port
• Terminal strip connections for power and motor
• D-sub connectors for feedback and I/O
• Internal heat sink with dual cooling fans
• Modular construction with separate power and control boards

Working Principle The controller receives motion commands via digital I/O or serial communication, executes pre-programmed motion profiles, and regulates motor current through a digital current loop. It uses resolver feedback from the motor to close the velocity and position loops, delivering precise motion control. The IGBT power stage converts AC line power to variable frequency, variable voltage output to drive the servo motor.

Installation Requirements

• Mount vertically on panel with M6 mounting bolts
• Maintain 100 mm clearance on all sides for airflow
• Use appropriately sized copper conductors for power and motor connections
• Connect protective earth conductor to chassis ground terminal
• Install in well-ventilated electrical enclosure
• Torque power terminals to specified values

Usage Notes

• High voltage present inside; disconnect power and wait 10 minutes before servicing
• Do not block ventilation fan openings
• Ensure motor inductance matches controller output rating
• Program motor parameters correctly before enabling operation
• Do not operate at peak current for extended periods
• Periodically clean air filters to maintain cooling performance