RELIANCE 0-52859-2 Current Feedback Board

Technical Specifications

Model:0-52859-2（528592）

Brand:RELIANCE

Product type:Armature Current Feedback Sampling PCB Board

Weight:0.40kg

Dimension:220mm115mm25mm

Operating temperature:0℃ ~ 60℃

Storage temperature:-40℃ ~ +85℃

Relative humidity:5%~85%,non-condensing

Certification:CE

System compatibility

0-52859-2 belongs to RELIANCE CardPak series current feedback board.

Installed into CardPak DC drive rack,works with 490051 armature control board,490054 field regulator board,518317 interface control board and pulse trigger board.

Collect armature current sampling signal for current closed-loop control of Reliance large DC drive.

Compatible with AutoMax control system for heavy industry production line.

Commonly used for old DC drive equipment maintenance and spare replacement.

Function

0-52859-2 is dedicated armature current feedback sampling PCB board for RELIANCE CardPak DC drive system.

Receive current signal from drive current transformer,convert into standard analog feedback signal.

Transmit processed current feedback value to main armature regulator board for current loop closed-loop calculation.

Built-in gain and offset adjustment circuit for onsite current calibration.

Hardware overcurrent detection circuit for drive overcurrent pre-alarm.

Onboard multiple test points for current signal measurement and loop tuning.

Detect current feedback loss and output fault alarm signal to interface board.

Installation

Power off the whole CardPak drive rack and cut main power supply.

Insert 0-52859-2 board into designated slot of drive rack.

Fasten fixing screws.

Connect backplane edge connector and current transformer signal wiring.

High current sampling wiring should be separated from low voltage analog signal cable.

Power on system,adjust potentiometer to calibrate current gain and offset.

Test current sampling accuracy and overcurrent protection function.

Interface

CardPak backplane edge connector,current transformer input terminal,analog feedback output port,calibration potentiometer,test measurement points,status LED indicators.

Feature

RELIANCE 0-52859-2,CardPak armature current sampling printed circuit board.

Precise conversion of CT current signal to analog feedback for current loop.

Potentiometer gain and offset adjustment for flexible onsite calibration.

Hardware overcurrent pre-detection function to protect SCR stack and motor.

Multiple test points for convenient maintenance and signal inspection.

Standard CardPak plug-in structure,easy replacement together with other regulator boards.

Discontinued obsolete board,supply only for old automation drive system spare replacement.

Suitable for metallurgy,paper-making heavy-duty DC drive production line renovation.

Diagnostic

Current value drift:potentiometer parameter drift or CT signal wiring interference;

No current feedback signal:current transformer fault or terminal loose;

Overcurrent false alarm:sampling gain calibration incorrect;

LED abnormal:board auxiliary power supply failure;

Drive shutdown:current feedback loss protection triggered.

Product Brief

RELIANCE 0-52859-2 is CardPak armature current feedback board.

It samples armature current signal and converts to analog feedback for DC drive current closed-loop control,widely used as spare part for heavy industry DC drive system 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.