Pacific Scientific SCE904AN-002-01

Technical Specifications

• Input Voltage: 120 VAC to 240 VAC, single-phase, 50/60 Hz
• Output Power: 4.5 kW nominal
• Maximum Continuous Current: 21.2 A RMS
• Maximum Speed: 5,000 RPM (motor dependent)
• Control Modes: Position control, velocity control, torque control
• Communication Interfaces: RS-485 (Modbus RTU), CANopen, EtherCAT
• Feedback Support: Incremental encoder, resolver, absolute encoder
• Operating Temperature Range: -10°C to +50°C
• Storage Temperature Range: -40°C to +70°C
• Protection Features: Overcurrent, short circuit, overvoltage, undervoltage, overtemperature
• Cooling Method: Natural convection + optional forced air cooling
• Dimensions: 180 mm × 120 mm × 40 mm

Functional Features

• Advanced vector control algorithm for smooth motor operation
• Adaptive PID auto-tuning function
• Built-in position trajectory generator
• Multiple homing modes available
• Programmable I/O points for general purpose use
• Torque feedforward for high dynamic performance
• Comprehensive fault diagnostic and error logging
• Fanless design option for low-noise environments

Application Scenarios

• Industrial robotics and manipulators
• CNC machine tool feed drives
• Packaging and converting machinery
• Printing press drive systems
• Automated assembly equipment
• Material handling and positioning systems

Material & Structure

• Aluminum alloy housing with integrated heat sink
• Front panel with LED status indicators
• Screw terminal blocks for power and motor connections
• D-sub connectors for feedback and communication
• Internal IGBT power stage and digital control board
• DIN rail mountable design with panel mount option

Working Principle The drive receives motion commands from a host controller via communication interface or analog inputs, processes the commands through nested current, velocity and position control loops, and outputs PWM power to the servo motor. It uses feedback from the motor’s position sensor to continuously adjust the output, maintaining accurate speed and position control. The vector control algorithm optimizes motor torque production across the speed range.

Installation Requirements

• Mount vertically for optimal cooling performance
• Maintain 50 mm clearance on all sides for airflow
• Use copper conductors sized for maximum output current
• Connect protective earth terminal before power connections
• Separate power cables from signal cables by minimum 100 mm
• Install in dry, dust-free electrical cabinet

Usage Notes

• High voltage inside; disconnect power and wait 5 minutes before servicing
• Do not operate without proper motor connection
• Verify motor parameters match drive configuration
• Do not exceed rated ambient temperature
• Ensure brake voltage matches drive output if using motor brake
• Use shielded cables for all feedback and signal connections