Pacific Scientific SCE903AN-002-01 Convection Cooled Digital Servo Drive

Product Description

SCE903AN-002-01 belongs to Pacific Scientific SCE9 high-performance digital servo drive family, manufactured under Danaher Motion (now Kollmorgen).

This convection-cooled servo amplifier is designed for single-axis closed-loop motion control, supporting analog ±10V speed/position command and incremental encoder pulse input without factory-installed serial communication option boards.

It adopts high-speed DSP digital control algorithm and IGBT PWM power stage, providing stable torque, velocity and position loop regulation for brushless AC servo motors. Built-in automatic motor auto-tuning function optimizes PID parameters automatically to match different load inertia, greatly simplifying commissioning work.

Front-mounted seven-segment digital display and multi-status LED indicators show real-time operating status, fault codes and power alarm information for rapid on-site troubleshooting. Multi-channel terminal blocks integrate power input, motor output, encoder feedback and digital limit signals, with optocoupler isolation between field signals and internal logic to eliminate ground loop and EMI interference.

Conformal coated PCB and fan-free convection cooling structure adapt to dust-free, low-vibration automation workshop environments. Widely used as maintenance spare for packaging machinery, printing equipment, CNC automation lines and precision positioning platforms.

Technical Specifications

Part No.: SCE903AN-002-01

Brand: Pacific Scientific (Danaher Motion / Kollmorgen), Origin: USA

Cooling Type: AN = Convection cooled, no built-in fan

Rated Current: 3.75A continuous current at 25℃; peak 7.5A

Command Interface: Analog ±10V signal + incremental encoder pulse input (no serial communication onboard)

Custom Suffix Code: 002 = Factory customized hardware & firmware version

Firmware: Standard base servo control firmware

Power Input: Single-phase 110/240VAC universal mains

Supported Feedback: Incremental encoder, resolver

Control Modes: Torque control, speed control, position closed-loop control

Onboard Display: 7-segment digital fault/status readout

I/O Isolation: Optocoupler galvanic isolation for all field signals

Operating Temperature: 0℃ ~ +50℃ (derated performance above 40℃)

Humidity: 5%–95% non-condensing, conformal coated circuit board

Mounting: Vertical cabinet DIN rail mounting

Protection Class: IP20 cabinet-only installation

Weight: Approx. 1.1kg

Optional Accessory: OCE940 serial communication expansion card for Modbus/RS232

Key Features

Fan-free convection cooling design reduces mechanical failure points and extends service life in low-dust workshops.

Dual command modes (analog voltage + pulse encoder) compatible with mainstream PLC and motion controller output signals.

Built-in auto-tuning algorithm automatically optimizes servo loop parameters for fast stable dynamic response.

Full electrical protection: overvoltage, undervoltage, overcurrent, overheat, short circuit, encoder disconnection and limit alarm.

Front seven-segment display directly outputs fault codes without upper computer diagnostic software.

Independent opto-isolation circuit isolates field wiring faults to avoid burning the drive internal mainboard.

Expandable serial communication via external OCE940 option card for remote parameter modification and data monitoring.

Compact vertical cabinet layout saves installation space for multi-axis servo control cabinet integration.