Emerson Control Techniques SP4403 HF Unidrive SP Motion Drive Unit

Module Feature

SP4403 HF belongs to Unidrive SP series high-frequency universal AC drive manufactured by Emerson Control Techniques. Rated 45kW heavy duty /55kW normal duty. It supports V/F, open-loop vector, closed-loop vector and high-performance servo control, compatible with asynchronous induction motors and Unimotor FM permanent magnet servo motors. Equipped with three SM small option slots for encoder feedback, fieldbus communication and motion control modules. HF version supports higher carrier frequency for low-noise operation. Widely used in printing machinery, winders, metal processing, packaging and high-precision automation systems.

Working principle

Three-phase AC mains power is rectified to DC bus voltage. IGBT power stage converts DC into adjustable frequency and voltage AC output. The drive receives motion command from upper controller and compares with encoder feedback signal to realize closed-loop torque, speed and position regulation. Built-in brake transistor absorbs regenerative energy during motor deceleration. HF hardware enables elevated switching frequency to reduce motor acoustic noise.

Onboard components

Input rectifier bridge,IGBT power module,main control PCB,LED status panel,dynamic braking transistor,heat sink,three SM option module slots,power & control terminal blocks,EMC filter.

LED indicators

Power LED,run status LED,fault alarm LED.

Hardware self-diagnosis

Overvoltage,undervoltage,overcurrent,overtemperature,output short circuit,earth fault,encoder signal loss,motor overload,phase loss monitoring.

Programming software

CTSoft software,supports motor auto-tune,real-time motion monitoring,fault log reading,parameter backup and restore.

Electrical & Process Parameters

Model:SP4403 HF Brand:Emerson Control Techniques Device type:Unidrive SP High Frequency Universal AC Drive Input voltage:380 ~ 480VAC three phase Heavy duty rating:45kW,continuous output current 96A Normal duty rating:55kW,continuous output current 104A Control mode:V/F,open vector,closed vector,servo control Feedback:Incremental,SinCos,SSI,resolver via SM option card Carrier frequency:High frequency adjustable Cooling:Forced air cooling Protection:Over temperature,over current,over voltage,under voltage,short circuit,earth fault,encoder fault detection

Mechanical & Structure

Mounting:Panel mounting inside control cabinet Protection class:IP20 Housing:Metal frame housing

Environmental

Operating temperature:-10℃ ~ +40℃ Storage temperature:-40℃ ~ +85℃ Ambient humidity:20~80% non-condensing Certification: CE, UL compliant Status: Emerson Control Techniques SP4403 HF Unidrive SP high frequency universal drive for industrial servo and vector motion applications

Installation

Follow ESD safety procedure before handling.Mount vertically and reserve sufficient ventilation space around heat sink.Connect three-phase mains to L1/L2/L3 terminals and motor cable to U/V/W terminals.Use shielded cable for encoder and control I/O wiring to reduce EMI interference.Power on,complete motor auto-tune and signal test before commissioning.

Interface

Main power terminal,motor output terminal,digital/analog I/O terminal,encoder connector,three SM expansion slots,keypad port.

Diagnostic

Over current:motor winding short,damaged cable or mechanical jam. Overheat:blocked heat sink or continuous overload. Encoder fault:loose wiring or encoder hardware damage. Under voltage:input mains fluctuation or phase loss.

Product Brief

Emerson Control Techniques SP4403 HF Unidrive SP high frequency universal AC drive,45kW heavy duty /55kW normal duty,380-480V three phase,multi-mode control,expandable with SM option cards for low-noise high dynamic servo and vector control.