RELIANCE 0-51831-2 CVTC Current Voltage Transducer Board

Technical SpecificationsModel:0-51831-2 Brand:RELIANCE Product type:CVTC Current Voltage Transducer Board Weight:0.48kg Dimension:210mm135mm30mm Operating temperature:0℃ ~ 60℃ Storage temperature:-40℃ ~ +85℃ Relative humidity:5%~85%,non-condensing Certification:CE

System compatibility0-51831-2 belongs to RELIANCE revised CVTC current voltage transducer rack plug-in board. It is designed for Reliance MaxPak Plus series rack DC drive,cooperates with main regulator board and power SCR stack. It is upgraded version of 0-51831-1,used to sample armature voltage and current signals and convert them into isolated analog feedback signals for closed-loop regulation and protection. Commonly used for maintenance and spare replacement of old industrial spindle DC drive equipment.

Function0-51831-2 is dedicated CVTC current voltage transducer PCB for RELIANCE MaxPak Plus DC drive system. Receive AC/DC sensing signals from drive power section. Complete isolation,rectification and scaling conversion of armature current and armature voltage. Output proportional analog feedback signals to main regulator board for speed and current loop control. Provide sampled signals for overvoltage,undervoltage and overcurrent protection circuits. Multiple onboard selectable voltage range terminals and two potentiometers for calibration of current and voltage full-scale value. Suppress high frequency noise generated by thyristor commutation. Isolate high power circuit from low voltage control circuit to protect control logic.

InstallationPower off the whole drive cabinet and cut main power supply. Insert 0-51831-2 CVTC board into drive rack slot and lock retaining screw. Connect gold finger backplane connector for internal signal exchange. Separate high voltage power sensing wiring from low voltage analog signal cable. Power on system,select corresponding voltage tap and calibrate current and voltage feedback scaling via onboard trimmers. Verify feedback value consistency under no-load and loaded operation.

InterfaceBackplane edge connector,power sensing signal input,analog current & voltage feedback output,multi-range voltage selection terminals,auxiliary power terminal,shield grounding terminal,status LED indicators.

FeatureRELIANCE 0-51831-2 rack mount CVTC current voltage transducer board. Built-in miniature transformers for galvanic isolation of power sampling signals. Discrete analog rectifier and scaling circuit,add multi-voltage range selection terminals compared with 0-51831-1. Two adjustable potentiometers for full-scale calibration. Gold plated edge connector for reliable rack contact. Front screw terminal block for power sensing wiring. 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.

DiagnosticDrive speed regulation unstable:current/voltage feedback drift or potentiometer aging; False overcurrent or overvoltage alarm:sampling signal distortion; No feedback signal output:missing auxiliary power; Feedback reading offset:wrong voltage range selection or calibration parameter loss; Intermittent protection trip:backplane pin oxidation and poor contact.

Product BriefRELIANCE 0-51831-2 is CVTC current voltage transducer board. It samples and isolates armature current and voltage signals,supports multi voltage range selection,converts to analog feedback for closed-loop regulation and protection of Reliance MaxPak Plus legacy spindle 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.