Miller Electric TM-353E manual SC-120

Page 47

SC-120 877

Figure 9-2. Circuit Diagram For Syncrowave 250 Effective With Serial No. JJ351865 Thru JJ365633

Syncrowave 250

TM-353 Page 43

Image 47

Contents SyncrowaveR Table of Contents Declaration of Conformity For European Community CE Products Page Servicing Hazards Safety Precautions for ServicingSymbol Usage Marks a special safety messageAbout Pacemakers EMF InformationDefinitions + + +Rating Label For CE Products ISO/IECSome symbols are found only on CE products Symbols And Definitions220 230 260 380 415 460 InstallationSpecifications Volt-Ampere CurvesOverheating Duty Cycle And Overheating60% Duty Cycle At 200 Amperes Movement Location And Airflow Dimensions And WeightsSelecting a Location ARC Welding can cause Electromagnetic Interference Be careful when placing or moving unit over uneven surfacesTipping Weld Output Terminals And Selecting Cable SizesSocket Turn Off power before connecting to receptacleRemote 14 Receptacle Volts AC Duplex Receptacle And Shielding Gas ConnectionsAll values calculated at 60% duty cycle Electrical Service GuideCheck label inside your unit- only one label is on unit Placing Jumper Links And Connecting Input PowerControls OperationMeters Output Selector SwitchApplication Crater Time ControlsSpot Time Controls Balance Control AC Gtaw Setting Output WaveformsAC Balance Control Output Contactor Control Switch Amperage Adjustment ControlsFor AC And DC Smaw Welding Arc ControlsPostflow Time Control Preflow Time Control Optional High Frequency ControlsSCR Theory of OperationHD1 Troubleshooting Table TroubleshootingNecessary parts Dition of contacts. Replace CR5 if necessary Contacts. Replace CR2 if necessary Troubleshooting Circuit Diagram For Welding Power Source D, E See -1 forHD1 location V24Gnd Waveforms For SectionAC Output, 100 Amperes, 24 Volts AC Re- sistive Load Control Board PC1 Testing Information Use With Section Reference for gate pulse to SCR4 RC54 Not used Control Board PC1 Test Point ValuesReceptacle Pin Value Remote Board PC2 Testing Information Use With Section RC3 Meter Calibration Input Voltage Labels And Connections Circuit Breaker CB1 MaintenanceRoutine Maintenance MonthsFuses F1 And F2 Adjusting Spark GapsTurn Off power before adjusting spark gaps High Frequency HF Welding Processes Using HFSources Of HF Radiation From Incorrect Installation Correct Installation Model Serial Or Style Number Circuit Diagram Wiring Diagram Electrical DiagramsSC-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 Main Assembly Parts ListPLG51 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