ESAB LAW 510 - User Manual

0740 800 025 9708
LAW 400/500
LAW 410/510
Welding rectifier
Service manual

Summary

Read This First

Safety Warnings

Important safety precautions for arc welding and cutting, including electric shock, fumes, arc rays, fire, and noise hazards.

Component Description LAW 400;500

AP1 Component Description

AP2 Component Description

Connection Diagram, LAW 400;500 400-415 V

Connection Diagram, LAW 400;500 230-500 V

Connection Diagram, LAW; 400-415 V

Connection Diagram, LAW; 230-500 V

Function Description

1 Power Supply, Circuit Board AP1

Details the DC power supplies (+25VC, ±15V, +15VB, +5V, +12V) for the AP1 circuit board.

2 Display Output

4 Fixed; Controlled Firing Angle

6 Thermal Overload Cutout

Explains the function of the thermal overload cutout (ST1) and its operating temperatures.

7 a Arc Voltage

7 b Arc Voltage

8 Shunt Input

12 Thyristor Circuits

Details the thyristor firing circuits using operational amplifiers IC7 and IC9, and checks for thyristor failure.

13 Processor

Outlines processor functions including frequency measurement, voltage monitoring, overload protection, and hot start.

15 Pulse Welding

AP2 Suppression Circuit Board

Test Routine

Fitting Instructions, Thermal Overload Cutout

Fitting Instructions, Thyristor Modules

Load Characteristic

Technical Data

Primary Connections LAW; 230 - 500 V

Control Panel and Connections

Maintenance

ESAB LAW 510 Specifications

General

Power Source	Inverter
Input Frequency	50/60 Hz
Protection Class	IP23
Welding Process	MIG/MAG
Rated Output	500 A / 39 V
Duty Cycle	60% @ 500 A
Input Voltage	400 V