RELIANCE 0-51865 FBC Field Board Card

Technical SpecificationsModel:0-51865 Brand:RELIANCE Product type:FBC Field Board Card Weight:0.56kg Dimension:210mm135mm30mm Operating temperature:0℃ ~ 60℃ Storage temperature:-40℃ ~ +85℃ Relative humidity:5%~85%,non-condensing Certification:CE

System compatibility0-51865 is RELIANCE FBC rack plug-in field excitation control board. It is designed for Reliance MaxPak Plus series spindle DC drive rack,cooperates with USAB summing amplifier board and CGSA gate summing board. It controls DC motor field excitation current and performs field weakening logic for spindle speed extension. Commonly used for maintenance and spare replacement of old industrial spindle DC drive equipment.

Function0-51865 is dedicated FBC field excitation control PCB for RELIANCE MaxPak Plus DC drive system. Receive speed reference and field current feedback signals from drive control rack. Regulate motor field excitation current to maintain stable field flux at base speed. Execute field weakening function to extend spindle speed above base RPM. Front panel potentiometers for field current limit and field weakening threshold calibration. Generate field SCR firing pulses for excitation power control. LED indicators display field excitation operating and fault status.

InstallationPower off the whole drive cabinet and cut main power supply. Insert 0-51865 FBC board into drive rack slot and lock retaining screw. Connect gold finger backplane connector for internal signal exchange. Separate low-level analog control wiring from field power pulse cables. Power on system,calibrate field current limit and field weakening threshold via front potentiometers. Verify field current stability and high-speed field weakening response.

InterfaceBackplane edge connector,speed reference input,field current feedback input,field SCR trigger pulse output,auxiliary power terminal,shield grounding terminal,status LED indicators.

FeatureRELIANCE 0-51865 rack mount FBC field excitation control board. Discrete analog closed-loop circuit for field current regulation. Front panel adjustable potentiometers for field current and weakening setup. Gold plated edge connector for reliable rack signal transmission. Visual LED indication for excitation normal and fault state. Industrial PCB design for long continuous running in harsh factory environment. Discontinued obsolete board,supply only for old Reliance MaxPak Plus DC drive system spare replacement. Suitable for metallurgy,paper-making production line spindle DC drive renovation and maintenance.

DiagnosticMotor cannot reach high speed:field weakening circuit failure or potentiometer drift; Unstable field current:feedback circuit damage; Field fault LED lit:overcurrent or excitation loss; No field excitation output:SCR trigger circuit breakdown; Intermittent speed fluctuation:backplane pin oxidation and poor contact.

Product BriefRELIANCE 0-51865 is FBC field board card. It implements closed-loop regulation of DC motor field excitation current and field weakening control for Reliance MaxPak Plus legacy spindle DC drive,to realize constant torque and constant power speed range,widely used as spare part for legacy DC drive equipment maintenance.

Disclaimer:All 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.