Miller Electric TM-353E guide

Figure 9-17. Circuit Diagram For Control Board PC1 Effective With

Serial No. KH508255 And Following (Part 1 Of 2)

TM-353 Page 60

Syncrowave 250

Image 64

Miller Electric TM-353E manual

Contents

SyncrowaveR Table of Contents Declaration of Conformity For European Community CE Products Page Safety Precautions for Servicing Symbol UsageMarks a special safety message Servicing Hazards EMF Information About Pacemakers + + + Definitions ISO/IEC Rating Label For CE Products Symbols And Definitions Some symbols are found only on CE products Installation SpecificationsVolt-Ampere Curves 220 230 260 380 415 460 60% Duty Cycle At 200 Amperes Duty Cycle And OverheatingOverheating Selecting a Location Dimensions And WeightsMovement Location And Airflow Be careful when placing or moving unit over uneven surfaces TippingWeld Output Terminals And Selecting Cable Sizes ARC Welding can cause Electromagnetic Interference Turn Off power before connecting to receptacle Remote 14 ReceptacleVolts AC Duplex Receptacle And Shielding Gas Connections Socket Electrical Service Guide All values calculated at 60% duty cycle Placing Jumper Links And Connecting Input Power Check label inside your unit- only one label is on unit Operation Controls Output Selector Switch Meters Spot Time Controls Crater Time ControlsApplication AC Balance Control Setting Output WaveformsBalance Control AC Gtaw Amperage Adjustment Controls Output Contactor Control Switch Postflow Time Control Arc ControlsFor AC And DC Smaw Welding High Frequency Controls Preflow Time Control Optional Theory of Operation SCR HD1 Troubleshooting Troubleshooting Table Necessary parts Dition of contacts. Replace CR5 if necessary Contacts. Replace CR2 if necessary Troubleshooting Circuit Diagram For Welding Power Source See -1 for HD1 locationV24 D, E Waveforms For Section Gnd AC 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 used Receptacle Pin Value Remote Board PC2 Testing Information Use With Section RC3 Meter Calibration Input Voltage Labels And Connections Maintenance Routine MaintenanceMonths Circuit Breaker CB1 Turn Off power before adjusting spark gaps Adjusting Spark GapsFuses F1 And F2 Sources Of HF Radiation From Incorrect Installation Welding Processes Using HFHigh Frequency HF Correct Installation Electrical Diagrams Model Serial Or Style Number Circuit Diagram Wiring Diagram SC-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 Assembly PLG51 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