Miller Electric TM-353E manual Troubleshooting Circuit Diagram For Welding Power Source

Page 30

6-2. Troubleshooting Circuit Diagram For Welding Power Source

YDisable high frequency by placing High Frequency switch S2 in Off position before testing unit.

R1

R1

R1

V3

 

 

V2

 

 

 

V25

 

V1

 

 

 

 

 

V11

 

V4

 

 

 

V5

 

 

 

 

 

R1

 

 

 

V10

 

V6

V9

 

 

V8

 

 

 

 

 

 

V7

 

 

 

Link 1

Link 2

 

V13

 

 

 

 

V12

 

 

 

V14

V17

TD1 begins to time out

 

 

 

when CR5 deenergizes

 

 

 

TD3 begins to time out

V15

V16

 

when CR4 energizes

 

 

CR2 energizes when

 

 

 

See Figure 9-19

 

 

remote contactor

 

 

switch closes

for PC3 circuit

 

 

 

CR3 energizes during spot time

CR4 energizes when remote contactor

 

when an arc is detected

switch closes

See Section 3-8

See Section 6-6

for RC1

for PC2 data

information

 

TM-353 Page 26

Syncrowave 250

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Contents SyncrowaveR Table of Contents Declaration of Conformity For European Community CE Products Page Marks a special safety message Safety Precautions for ServicingSymbol Usage Servicing HazardsEMF Information About Pacemakers+ + + DefinitionsISO/IEC Rating Label For CE ProductsSymbols And Definitions Some symbols are found only on CE productsVolt-Ampere Curves InstallationSpecifications 220 230 260 380 415 460Duty Cycle And Overheating 60% Duty Cycle At 200 AmperesOverheating Dimensions And Weights Selecting a LocationMovement Location And Airflow Weld Output Terminals And Selecting Cable Sizes Be careful when placing or moving unit over uneven surfacesTipping ARC Welding can cause Electromagnetic InterferenceVolts AC Duplex Receptacle And Shielding Gas Connections Turn Off power before connecting to receptacleRemote 14 Receptacle SocketElectrical Service Guide All values calculated at 60% duty cyclePlacing Jumper Links And Connecting Input Power Check label inside your unit- only one label is on unitOperation ControlsOutput Selector Switch MetersCrater Time Controls Spot Time ControlsApplication Setting Output Waveforms AC Balance ControlBalance Control AC Gtaw Amperage Adjustment Controls Output Contactor Control SwitchArc Controls Postflow Time ControlFor AC And DC Smaw Welding High Frequency Controls Preflow Time Control OptionalTheory of Operation SCRHD1 Troubleshooting Troubleshooting TableNecessary parts Dition of contacts. Replace CR5 if necessary Contacts. Replace CR2 if necessary Troubleshooting Circuit Diagram For Welding Power Source V24 See -1 forHD1 location D, EWaveforms For Section GndAC Output, 100 Amperes, 24 Volts AC Re- sistive Load Control Board PC1 Testing Information Use With Section Control Board PC1 Test Point Values Reference for gate pulse to SCR4 RC54 Not usedReceptacle Pin Value Remote Board PC2 Testing Information Use With Section RC3 Meter Calibration Input Voltage Labels And Connections Months MaintenanceRoutine Maintenance Circuit Breaker CB1Adjusting Spark Gaps Turn Off power before adjusting spark gapsFuses F1 And F2 Welding Processes Using HF Sources Of HF Radiation From Incorrect InstallationHigh Frequency HF Correct Installation Electrical Diagrams Model Serial Or Style Number Circuit Diagram Wiring DiagramSC-114 SC-120 SC-121 SC-124 SC-124 785-B SC-132 697-A SC-137 SC-135 SC-142 SC-148 SC-154 649-C SC-178 SC-179 303-A SC-181 109-E SC-188 161-A Syncrowave TM-353 TM-353 SD-188 162-A TM-353 SD-187 644 1 TM-353 SD-187 644 2 SA-121 SA-044 725-C TM-353 Description Parts List Main AssemblyPLG51 114 BASE, Prior to KE727074 170 Panel, Front w/Components Panel, Front w/ Components Rectifier, Si Diode -1 Item Panel, Mtg Components -1 Item Control Panel, Lower Front 126 Capacitor ASSEMBLY, Eff w/JK537589 thru JK690986 C14 124 COIL, HF coupling Eff w/JK572898 thru KF959378 174 Optional Equipment Page Miller
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