Lincoln Electric R350 manual Cable Inductance and ITS Effects on Welding, Table A.2, Wave

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A-7

INSTALLATION

A-7

CABLE INDUCTANCE AND ITS EFFECTS ON WELDING

Excessive cable inductance will cause the welding performance to degrade. There are several factors that contribute to the overall inductance of the cabling system including cable size, and loop area. The loop area is defined by the separation distance between the electrode and work cables, and the overall welding loop length. The welding loop length is defined as the total of length of the electrode cable (A) + work cable

(B) + work path (C) (See Figure A.6).

To minimize inductance always use the appropriate size cables, and whenever possible, run the electrode and work cables in close proximity to one another to minimize the loop area. Since the most significant fac- tor in cable inductance is the welding loop length, avoid excessive lengths and do not coil excess cable. For long work piece lengths, a sliding ground should be considered to keep the total welding loop length as short as possible.

REMOTE SENSE LEAD

SPECIFICATIONS

Voltage Sensing Overview

The best arc performance occurs when the POWER WAVE R350 has accurate data about the arc condi- tions.

Depending upon the process, inductance within the electrode and work cables can influence the voltage apparent at the studs of the welder, and have a dra- matic effect on performance. Remote voltage sense leads are used to improve the accuracy of the arc volt- age information supplied to the control pc board. Sense Lead Kits (K940-xx) are available for this pur- pose.

The POWER WAVE R350 has the ability to automati- cally sense when remote sense leads are connected. With this feature there are no requirements for setting- up the machine to use remote sense leads. This fea- ture can be disabled through the Diagnostics Utility (available at www.powerwavesoftware.com).

If the auto sense lead feature is disabled and remote voltage sensing is enabled but the sense leads are missing, improperly connected extreme- ly high welding outputs may occur.

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General Guidelines for Voltage Sense Leads Sense leads should be attached as close to the weld as practical, and out of the weld current path when possible. In extremely sensitive applications it may be necessary to route cables that contain the sense leads away from the electrode and work welding cables.

Voltage sense leads requirements are based on the weld process (See Table A.2)

 

TABLE A.2

 

Process

Electrode Voltage Sensing (1)

Work Voltage Sensing (2)

 

67 lead

21 lead

GMAW

67 lead required

21 lead optional (3)

GMAW-P

67 lead required

21 lead optional (3)

FCAW

67 lead required

21 lead optional (3)

GTAW

Voltage sense at studs

Voltage sense at studs

(1)The electrode voltage sense lead (67) is automatically enabled by the weld process, and integral to the 5 pin arclink control cable (K1543- xx).

(2)When a work voltage sense lead (21) is connected the power source will automatically switch over to using this feedback.

(3)Negative polarity semi-automatic process operation WITHOUT use of a remote work sense lead (21) requires the Negative Electrode Polarity attribute to be set.

FIGURE A.6

POWER

WAVE

R350

B

A

C

WORK

POWER WAVE® R350

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Contents Power Wave R350 Safety Depends on YouSafety California Proposition 65 WarningsElectric Shock can kill Welding and Cutting Sparks can Cause fire or explosion IiiPrécautions DE Sûreté Sûreté Pour Soudage a LʼArcThank You Table of Contents Installation Technical Specifications Power Wave R350Storage Temperature Range Model Height Width Depth WeightOperating Temperature Range Process Output Range AmperesFalling Equipment can Cause injuryInput Connection Input Fuse and Supply Wire ConsiderationsPower Cord Replacement Input Voltage SelectionConnection Diagram Gmaw MIG WeldingRecommended Work Cable Sizes for ARC Welding Output Cable Guidelines Table A.1Table A.2 Remote Sense Lead SpecificationsCable Inductance and ITS Effects on Welding WaveElectrode Voltage Sensing Work Voltage SensingVoltage Sensing Considerations for Multiple ARC Systems If Sense Leads are not UsedFigure A.8 Control Cable Connections Product specific Installation InstructionsConnection Between Power Source and Ethernet Networks Electric Shock can Kill Safety PrecautionsOperation Product Summary Product DescriptionRecommended Processes and Equipment Negative Output Terminal Positive Output Terminal Design FeaturesCase Front Controls Optional VOLTS/AMPS DisplayCase Back Controls SYNC-TANDEM Connector 4 PIN MS StyleOptional Devicenet Connector 5 PIN Sealed Mini Style Arclink Receptacle and Circuit Breaker 2 10 AMPNON-SYNERGIC Welding Modes Common Welding ProceduresMaking a Weld Synergic Welding ModesPulse Welding Gtaw TIG WeldingConstant Voltage Welding Figure B.4 General Options AccessoriesKITS, Options and Accessories Periodic Maintenance MaintenanceRoutine Maintenance Calibration SpecificationTroubleshooting HOW to USE Troubleshooting GuideUsing the Status LED to Troubleshoot System Problems Table E.1Error Code # Indication Main Control Board Status LightInput Control Board Basic Machine Problems Weld and Arc Quality Problems Troubleshooting Ethernet Diagrams Dimension Print Power Wave R350 Power Wave R350 Precaucion Warnung