RELIANCE 0-51422 Field Regulator Board

Technical SpecificationsModel:0-51422 Brand:RELIANCE Product type:Field Regulator Board Weight:0.66kg Dimension:215mm142mm30mm Operating temperature:0℃ ~ 60℃ Storage temperature:-40℃ ~ +85℃ Relative humidity:5%~85%,non-condensing Certification:CE

System compatibility0-51422 belongs to RELIANCE field regulator board. Installed inside Reliance DC variable speed drive cabinet,cooperates with main controller board and field winding power circuit. It stabilizes and regulates DC motor field excitation current for constant horsepower field weakening control. Commonly used for maintenance and spare replacement of old industrial DC drive equipment.

Function0-51422 is dedicated field excitation regulator PCB for RELIANCE DC drive system. Generate adjustable reference current for motor field winding. Monitor actual field current and form closed-loop field regulation. Execute field weakening function to extend motor speed range above base speed. Detect loss of field current and trigger safety interlock to protect DC motor. Limit maximum field current to avoid overheating of field coil. Transmit field status signal to main drive control board.

InstallationPower off the whole drive cabinet and cut main power supply. Mount 0-51422 board to designated bracket and lock fasteners. Connect field power and feedback signal wiring. Separate low voltage control wiring from high power field circuit. Power on system,calibrate field current setpoint and field weakening threshold. Verify field current stability at base speed and overspeed range.

InterfaceTerminal block connector,field power reference output,field current feedback input,loss-of-field logic output,adjustment potentiometer,status LED indicators.

FeatureRELIANCE 0-51422,field current closed-loop control board for DC shunt motor. Analog closed-loop regulation for excitation current. Built-in loss-of-field fault detection and interlock protection. Adjustable field weakening for constant horsepower operation. Industrial PCB design for long continuous running in harsh factory environment. Discontinued obsolete board,supply only for old Reliance DC drive system spare replacement. Suitable for metallurgy,paper-making production line DC drive renovation and maintenance.

DiagnosticMotor cannot run above base speed:field weakening circuit malfunction; Motor overheating:field current set too high; Loss-of-field alarm triggered:field feedback signal missing; No excitation output:board power supply failure; Intermittent speed fluctuation:field feedback wiring loose or component drift.

Product BriefRELIANCE 0-51422 is field regulator board. It implements field current closed-loop regulation,field weakening and loss-of-field protection for shunt DC motor of Reliance legacy DC drive,widely used as spare part for legacy DC drive equipment maintenance.

DisclaimerAll parameters are for reference only and not the basis of quotation. Goods are scarce,overseas delivery lead time 3-7 working days. It is only used for equipment maintenance and retrofit.