Guizhou Yuanmiao Automation Equipment Co., Ltd.: 1Yr

Anshun, Guizhou, China; Main products: ABB Triconex Foxboro LAM, Bentley Motorola Schneider, Kollmorgen HIMA ALSTOM, Reliance GE HONEYWELL NI、ICS

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Home > Products > Other Brands > Pacific Scientific SCE903AN-002-01 Servo Motor Driver

Pacific Scientific SCE903AN-002-01 Servo Motor Driver

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Product Details

Material	Other, Global universal model	Condition	Other, Global universal model
Task	Other, Global universal model	Mathematical Model	Other, Global universal model
Signal	Other, Global universal model	Customized	Non-Customized
Structure	Other, Global universal model	Input Power	AC 200-240V±10%, 50/60Hz
weight	5kg	Dimensions	150mm (W) × 300mm (H) × 200mm (D)

Product Description

Pacific Scientific SCE903AN-002-01I. Overview

The Pacific Scientific SCE903AN-002-01 is a high-performance servo controller specifically designed for medium to high-power industrial automation scenarios. Its core function achieves high-precision speed, position, and torque control of servo motors through advanced vector control technology and closed-loop feedback systems. Adopting a modular design, it features high integration and strong expandability, suitable for fields requiring high dynamic response and complex trajectory control, such as CNC machine tools, robotic arms, and lithium battery manufacturing equipment. The controller supports multiple industrial communication protocols (e.g., EtherNet/IP, CANopen), and is equipped with intelligent diagnosis and multiple protection mechanisms, enabling stable operation under harsh conditions to meet the high-precision production needs of automated production lines.

II. Functional Features

Multi-mode High-precision Control: Supports position mode (pulse + direction/encoder feedback), speed mode, and torque mode, with positioning accuracy up to ±0.5 pulse, adapting to scenarios such as precision machining and high-speed sorting.
High-speed Dynamic Response: Current loop update frequency ≥50kHz, speed loop bandwidth ≥1kHz, enabling fast tracking of high-speed start-stop and complex trajectory movements, with dynamic error ≤±0.1%.
Multi-protocol Compatibility: Standard with EtherNet/IP, CANopen, and Modbus RTU interfaces; optional Profinet and RS485 for seamless integration with PLC and upper-level systems.
Intelligent Vector Control and Energy Saving: Adopts Field-Oriented Control (FOC) algorithm to optimize motor efficiency and reduce energy consumption; supports regenerative braking to convert kinetic energy into electrical energy feed back to the power grid.
Multiple Safety Protections: Equipped with overcurrent, overvoltage, overload, overheat, encoder abnormality, and emergency stop protections; protection class IP20, suitable for dusty and vibrating environments.
Convenient Debugging and Monitoring: Configures parameters via LCD touchscreen or dedicated software (e.g., Pacific Motion Studio), supporting real-time waveform monitoring, fault code display (e.g., "AL012" indicates encoder disconnection), and historical data recording.

III. Technical Parameters

Parameter Category	Specific Indicators
Input Power	Three-phase AC 200-240V±10%, 50/60Hz; rated current 15A, peak current 30A (Continue ≤20s)
Output Power	Continuous output power 3kW, peak power 6kW (duration ≤10s)
Control Signal Input	Differential input pulse (max frequency 500kHz), analog input (±10V/0-20mA), digital IO (8 inputs/6 outputs)
Encoder Interface	Supports incremental (1024/2048 PPR) and absolute encoders (BiSS-C, SSI, EnDat 2.2), feedback resolution up to 23 bits
Communication Interface	EtherNet/IP (100Mbps), CANopen (up to 1Mbps), Modbus RTU (RS485)
Speed Control Accuracy	±0.01% (rated speed), speed fluctuation ≤±0.1%
Position Repeat Accuracy	±0.5 pulse (depending on encoder resolution)
Protection Functions	Overcurrent (>40A), overvoltage (DC bus >400V), overheat (heat sink temp >85℃), undervoltage, encoder fault, short-circuit protection
Dimensions	150mm (W) × 300mm (H) × 200mm (D), weight approx. 5kg
Operating Environment	Temperature -10℃~+55℃ (≤40℃ without cooling fan), humidity ≤90% (non-condensing), altitude ≤1000m

IV. Working Principle

The working principle of SCE903AN-002-01 is based on the servo system architecture of "three closed-loop control + vector transformation", with core processes as follows:

Command Reception and Processing

Receives position, speed, and torque commands from upper-level systems (PLC/PC) via EtherNet/IP or pulse input, and parses protocols through a DSP chip to convert them into control reference quantities.
Supports analog input (e.g., 0-10V corresponding to 0-3000rpm speed command) and digital IO signals (e.g., enable, reset).

Vector Control and Power Drive

Coordinate Transformation: Decomposes three-phase current into independently controlled excitation current (Id) and torque current (Iq) through Clark and Park transformations, achieving decoupling control of torque and magnetic field.
PID Adjustment: Performs PID calculations for current loop, speed loop, and position loop to generate PWM drive signals, which drive IGBT power modules after inverse transformation.
Power Amplification: The IGBT module converts DC bus voltage (DC 280-340V) into three-phase SPWM waveforms to drive the servo motor, with output power dynamically adjusted according to the load.

Closed-loop Feedback and Precision Control

Real-time Feedback: Encoders (e.g., 23-bit absolute encoders) real-time detect motor position and speed, feed back to the DSP for comparison with command values, and generate error signals.
Three Closed-loop Adjustments:

Current loop: Quickly responds to load current changes and limits overcurrent;
Speed loop: Suppresses speed deviations caused by load fluctuations to ensure uniform operation;
Position loop: Corrects position errors through interpolation algorithms to achieve high-precision positioning (e.g., ±0.5 pulse).

Status Monitoring and Protection

Built-in temperature, current, and voltage sensors monitor system parameters in real time. When abnormalities are detected, PWM output is immediately blocked and the protection circuit is triggered, while fault codes (e.g., "AL005" for overvoltage) are reported via the communication interface.

V. Common Faults and Solutions

Fault Phenomenon	Possible Causes	Solutions
No power to controller	1. Loose power wiring or blown fuse 2. Abnormal power voltage 3. Damaged power module	1. Check power wiring and replace fuse 2. Measure input voltage (AC 200-240V) 3. Replace power module
Unusual noise during motor operation	1. Encoder signal interference 2. Improper PID parameters 3. Mechanical load resonance	1. Check encoder cable shielding and grounding, replace with twisted shielded cable 2. Re-debug PID (decrease speed loop proportional coefficient) 3. Adjust mechanical structure or add damping
Overcurrent alarm (AL001)	1. Load overload or jamming 2. Motor winding short circuit 3. IGBT module failure	1. Check mechanical parts of the load and eliminate jamming 2. Test winding insulation with a megohmmeter and repair short circuits 3. Replace IGBT module or controller
Excessive position deviation	1. Insufficient encoder resolution 2. Excessive mechanical transmission clearance 3. Pulse frequency exceeding upper limit	1. Replace with high-resolution encoder (e.g., 23-bit) 2. Adjust coupling and lead screw preload 3. Reduce pulse frequency or upgrade controller
EtherNet/IP communication failure	1. Poor network cable contact 2. IP address/subnet mask conflict 3. Damaged interface chip	1. Replace network cable and check RJ45 connector crimping 2. Ensure controller and upper-level system IP are in the same network segment 3. Replace communication module or repair interface circuit
Overheat alarm (AL004)	1. Radiator dust blockage 2. Excessive ambient temperature 3. Cooling fan stop	1. Shut down and clean radiator dust 2. Add forced cooling to control ambient temperature ≤40℃ 3. Replace fan assembly

Company Profile

Guizhou Yuanmiao Automation Equipment Co., Ltd.

Main products: Covering globally renowned brands: Bently Nevada, Triconex, Woodward, Foxboro, Westinghouse, Reliance, Schneider Modicon, ABB, AB (Allen-Bradley), Motorola, GE Fanuc, Yaskawa, Bosch Rexroth Rexroth, ACSO, YOKOGAWA, Rexroth, NI, ICS Triplex, Kollmorgen, Mitsubishi, MOOG, Emerson, B&R B&r, SST, ALSTOM, KUKA EPRO, LAM HIMA dark Horse, HONEYWELL, prosoft, AMAT, SIEMENS, etc. The product categories include: DCS system accessories, robot system spare parts, large servo system spare parts, etc., which are widely used in power, chemical, metallurgy, intelligent manufacturing and other fields.

Contact Us

Guizhou Yuanmiao Automation Equipment Co., Ltd.: Contact nameyezi
Chat Now; AddressXixiu District, Anshun, Guizhou

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Product Categories

ABB	Bently Nevada	TRICONEX	GE
ICS Triplex	HIMA	MOTOROLA	WOODWARD
HONEYWELL	Foxboro	Schneider Modicon	YOKOGAWA
EPRO	MOOG	Westinghouse	Reliance
Emerson	B&R	ALSTOM	LAM
KONGSBERG	FANUC	National Instruments	Kollmorgen
Other Brands	Rexroth	PROSOFT	Vibro-meter
Allen-Bradley	ZYGO	Praxis	METSO
Basler Electric	A-B	XYCOM	AMAT
TOSHIBA	CCC

Pacific Scientific SCE903AN-002-01 Servo Motor Driver

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