RELIANCE 0-51893 FCCC Field Control Circuit Board

Technical SpecificationsModel:0-51893 Brand:RELIANCE Product type:FCCC Field Control Circuit Board Weight:0.56kg Dimension:210mm135mm30mm Operating temperature:0℃ ~ 60℃ Storage temperature:-40℃ ~ +85℃ Relative humidity:5%~85%,non-condensing Certification:CE

System compatibility0-51893 is RELIANCE FCCC rack plug-in field control circuit 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 handles motor field excitation closed-loop regulation and field weakening control for wide speed range spindle operation. Commonly used for maintenance and spare replacement of old industrial spindle DC drive equipment.

Function0-51893 is dedicated FCCC field control circuit PCB for RELIANCE MaxPak Plus DC drive system. Receive speed reference and field current feedback signals from drive rack. Regulate DC motor excitation current to maintain stable magnetic flux within base speed. Execute field weakening algorithm to extend spindle speed into constant power region. Front panel multi-turn high-precision potentiometers for field current limit,field weakening threshold and dynamic response calibration. Generate SCR firing pulses to control field excitation power output. Dual LED indicators show normal running state and field fault alarm. Built-in loss-of-excitation detection circuit to trigger interlock protection when field current drops abnormally.

InstallationPower off the whole drive cabinet and cut main power supply. Insert 0-51893 FCCC 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 high energy field pulse cables. Power on system,calibrate field parameters via front potentiometers. Verify field current stability and smooth transition of field weakening at high speed.

InterfaceBackplane edge connector,speed reference input,field current feedback input,field SCR trigger pulse output,auxiliary power terminal,shield grounding terminal,dual status LED indicators,front multi-turn calibration potentiometer bank.

FeatureRELIANCE 0-51893 rack mount FCCC field control circuit board. Discrete analog closed-loop circuit for excitation current regulation. Front panel multi-turn adjustable potentiometers for multi-parameter tuning. Onboard loss-of-field protection and overcurrent limiting circuit. Gold plated edge connector for reliable rack signal transmission. Dual LED visual indication for running 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 potentiometer drift or component aging; Unstable excitation current:feedback sampling circuit damage; Fault LED lit:field overcurrent or loss of excitation; No field pulse output:SCR trigger circuit breakdown; Intermittent speed fluctuation:backplane pin oxidation and poor contact.

Product BriefRELIANCE 0-51893 is FCCC field control circuit board. It implements closed-loop field current regulation and field weakening control for Reliance MaxPak Plus legacy spindle DC drive,achieving constant torque and constant power wide speed regulation,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.