Sprecher+Schuh PFS Series soft starter controllers are solid state motor control devices designed to provide smooth starting and stopping of three phase motors in industrial applications. These controllers use advanced microprocessor-based control to manage motor acceleration and deceleration, helping reduce mechanical stress, limit inrush current, and improve overall system performance. The PFS Series is suitable for controlling standard squirrel cage induction motors as well as star delta motors, offering flexible control for a wide range of motor starting applications.
The PFS Series provides multiple starting and stopping modes that allow users to tailor motor performance to specific application requirements. With built in diagnostics, protection features, and programmable settings accessible through an integrated keypad and LCD display, these soft starters are designed to simplify setup while providing clear operational feedback. The modular and compact design helps reduce panel space and installation complexity, making the PFS Series a practical solution for industrial motor control systems.
Key Features
Solid state soft starter designed for three phase motor control applications
Suitable for standard squirrel cage induction motors and star delta motors
Seven standard starting modes including soft start, current limit start, dual ramp start, and full voltage start
Selectable kick start and preset slow speed functions available
Soft stop functionality for controlled motor deceleration
Built in SCR bypass contactor reduces heat generation during operation
Integrated electronic motor overload protection with programmable trip class
Built in current transformers on each phase for monitoring
Advanced diagnostics including ground fault, line fault, voltage imbalance, phase reversal, overvoltage, undervoltage, and overtemperature
Configurable auxiliary contacts for status, fault, alarm, and external bypass indication
LCD display with keypad programming for parameter configuration and monitoring
Metering capabilities including current, voltage, power, energy usage, and motor thermal capacity
Available for current ranges approximately 5 to 480 A depending on model
Voltage range 200 to 600 V AC, 50/60 Hz
Control voltage options include 100 to 240 V AC or 24 V AC/DC
Supports both standard three wire and wye delta motor connections
Modular and compact design for reduced panel space and simplified installation
