RELIANCE 518791 PGAB Pulse Gate Amplifier Board

Technical Specifications

Model:518791

Brand:RELIANCE

Product type:PGAB Pulse Gate Amplifier PCB Board

Weight:0.42kg

Dimension:220mm115mm25mm

Operating temperature:0℃ ~ 60℃

Storage temperature:-40℃ ~ +85℃

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

Certification:CE

System compatibility

518791 belongs to RELIANCE CardPak series PGAB pulse gate amplifier board.

Installed into CardPak DC drive rack,works with 490051 armature control board,490054 field regulator board,518315 pulse trigger board and 518317 interface control board.

Used to amplify gate pulse signal and drive SCR thyristor stack of large Reliance DC drives.

Compatible with AutoMax control system for heavy industry production line.

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

Function

518791 is dedicated PGAB pulse gate amplifier PCB board for RELIANCE CardPak DC drive system.

Receive weak phase trigger pulse signal from front regulator board.

High power amplification of gate pulse to ensure reliable SCR thyristor firing.

Built-in pulse shaping and isolation circuit between control side and high voltage power side.

Detect gate pulse abnormality and send fault alarm signal to interface board.

Onboard test points for pulse waveform inspection and phase debugging.

Provide multi-channel independent gate drive output for thyristor power stack.

Installation

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

Insert 518791 board into designated slot of drive rack.

Fasten fixing screws.

Connect backplane edge connector and SCR gate output wiring.

High voltage trigger cable should be separated from low voltage analog signal cable.

Power on system,check pulse amplitude,phase sequence and firing waveform.

Test SCR triggering stability and pulse loss protection function.

Interface

CardPak backplane edge connector,SCR gate drive output terminal,pulse input port,test measurement points,status and fault LED indicators.

Feature

RELIANCE 518791,CardPak PGAB pulse gate amplifier printed circuit board.

High power pulse amplification for large SCR thyristor stack.

Electrical isolation to protect low voltage control circuit from high voltage surge.

Hardware pulse fault detection and alarm latch function.

Multiple test points for convenient maintenance and waveform measurement.

Standard CardPak plug-in structure,easy replacement 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

SCR firing unstable:pulse amplitude insufficient or component aging;

No gate pulse output:backplane connector loose or board auxiliary power failure;

Phase imbalance:pulse phase drift or channel circuit damage;

Pulse fault alarm:pulse generation circuit abnormality;

Drive output jitter:pulse waveform distortion.

Product Brief

RELIANCE 518791 is CardPak PGAB pulse gate amplifier board.

It amplifies control pulse signal and drives SCR thyristor stack for Reliance large DC drive,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.