RELIANCE 0-52806-01 Tach Loss Overspeed Board

Technical Specifications

Model:0-52806-01（5280601）

Brand:RELIANCE

Product type:TLOB Tach Loss & Overspeed Protection PCB Board

Weight:0.68kg

Dimension:220mm115mm25mm

Operating temperature:0℃ ~ 60℃

Storage temperature:-40℃ ~ +85℃

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

Certification:CE

System compatibility

0-52806-01 belongs to RELIANCE CardPak series TLOB speed protection board.

Installed into CardPak DC drive rack,works with 5138116 main controller board,5186518 current loop driver board,563052 auxiliary power supply board and other plug-in regulator boards.

Dedicated hardware safety protection for DC motor speed monitoring.

Compatible with AutoMax control system for heavy industry production line.

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

Function

0-52806-01 is dedicated TLOB tach loss overspeed protection PCB board for RELIANCE CardPak DC drive system.

Continuously receive tachometer pulse signal from motor speed feedback unit.

Detect tachometer signal loss fault when speed feedback signal disappears.

Compare actual motor speed with preset threshold,trigger overspeed trip once exceeded.

Onboard tach calibration potentiometer for onsite speed signal calibration.

Built-in relay hardware interlock output to cut off SCR trigger pulse under fault condition.

Front panel manual reset button for fault reset after troubleshooting.

Two red LED indicators for Tach Loss and Overspeed alarm status display.

Installation

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

Insert 0-52806-01 board into designated slot of drive rack.

Fasten fixing screws.

Connect backplane edge connector and tachometer signal terminal wiring.

Tachometer signal adopt shielded twisted pair and separate from high voltage power cable.

Power on system,adjust potentiometer to calibrate tach signal and overspeed threshold.

Test overspeed trip and tach loss protection action.

Interface

CardPak backplane edge connector,tachometer signal input terminal,fault relay output port,tach calibration potentiometer,manual reset button,Tach Loss / Overspeed LED indicators,12-position screw terminal block.

Feature

RELIANCE 0-52806-01,CardPak TLOB speed safety protection printed circuit board.

Two core safety protection:tachometer signal loss detection and overspeed hardware trip.

Front panel LED directly display fault type for fast on-site troubleshooting.

Independent relay hard interlock to shut down drive power loop.

Adjustable potentiometer for tach signal calibration and overspeed threshold setting.

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

Overspeed false alarm:tach signal interference or calibration potentiometer drift;

Tach loss alarm:tachometer damaged or signal wire open circuit;

Protection relay no action:relay aging or board auxiliary power abnormal;

Cannot reset fault:fault condition still exists;

LED no lighting:board auxiliary power supply failure.

Product Brief

RELIANCE 0-52806-01 is CardPak TLOB tach loss overspeed protection board.

It monitors motor tach feedback signal and executes hardware safety interlock for overspeed and tach loss fault,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.