Manuals / Thermal Comfort / Power Tools / Welder

Thermal Comfort 3000 manual Appendix VII Ladder Diagram 15 VDC

Models: 3000

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APPENDIX VII: LADDER DIAGRAM - 15 VDC

LOGIC CONTROL BOARD

	D2	RUN
		RUN
	PLASMA		GAS
	PLASMA		CONTROL
		K4	CONTROL
		K4	CIRCUIT

SECONDARY

PRE-FLOW &

K3POST-FLOW CIRCUIT

D57

SWITCH

STARTRECOGNITION INDICATOR

W
CONTACTOR
K2		CONTACTOR
K2		CONTROL
D4
D4
J3-9
PWM
ENABLE
TP1
TP1	CONTACTOR DISABLE					SENSE BRIDGE
TP4	(Only after main con-						VOLTAGE
TP4	(Only after main con-						VOLTAGE
To disable	tactor initially closes)						<60VDC
To disable
this circuit for troubleshooting
this circuit for troubleshooting							SENSE BRIDGE
short test points together.							SENSE BRIDGE
short test points together.							VOLTAGE


HF AND PILOT							>60VDC
HF AND PILOT
CONTACTOR							HF AND
CONTACTOR
K5			PILOT
			PILOT				PILOT
		CONTROL					PILOT
		CONTROL					DISABLE
							DISABLE

K1 OK to Move

HFWS

D5

CSR Indicator

15 VDC SUPPLY

13

11

19

15

5

9

7

21

24

11

SW2

RUN

SET

PURGE

START/STOP (CNC)

START/STOP (Hand)

FS1

TS3 TS4 TS5 TS1 TS2

GAS	PS1
OXYGEN
WATER
PS2

OVER-CURRENT SHUTDOWN

(From Switching Control)

TORCH VOLTAGE/23

CSR (from Current

Control Board)

12

18

14

4

8

6

22

22

12

31

2

28 VAC	ALL PC BOARD INPUTS
CENTER TAP	ACTIVE LOW EXCEPT
	J1-24 AND J1-21.

REFERENCES J1 CONNECTOR

REFERENCES J3 CONNECTOR

A-01013

Manual 0-2533

73

APPENDIX

Image 77

Thermal Comfort 3000 manual Appendix VII Ladder Diagram 15 VDC

Contents

October 6 MerlinPage Table of Contents Table of Contents Section General Information Important Safety PrecautionsFire and Explosion PublicationsAvertissement Precautions De Securite ImportantesChoc Electrique Bruit Documents De ReferenceGeneral Information Declaration of Conformity National Standard and Technical SpecificationsLabor Statement of WarrantyService Responsibilities General Service PhilosophySection Introduction Scope Of ManualIntroduction General Description Specifications & Design FeaturesSection Introduction Description Theory Of Operation Input and Output PowerPlasma Arc Cutting and Gouging Pilot ArcOptions And Accessories Plasma/Secondary Gas Control Hour/Counter MetersIntroduction Section Service Troubleshooting DiagnosticsPeriodic Inspection & Procedures Coolant Level and Conductivity System TheoryDraining Coolant Circuit DescriptionSwitching Control PC Board Switch-Mode Power Supply OperationRemote Control Logic PC Board FunctionsTroubleshooting and Repair Troubleshooting GuideAdvanced Troubleshooting Standoff ControlHow to use this Guide Temp indicator on red Fuse blown at disconnect when primary power is connectedCoolant conductivity indicator off Coolant indicator offWeak or sputtering pilot No pilot arc Pilot indicator on PCR energizedVoltage Selection PC Board Check Test ProceduresEnable Circuit Tests Diode Check Blown Fuse F1 or F2Motor Control Contactor Check MC1 or MC2 Pressure Sensing Circuit Thermal Sensing Circuit CheckGas Solenoid Circuits Coolant Flow Sensor Circuit CheckRefer to Appendix IX for Start Circuit Diagram Power Supply Start CircuitRemote Control Start Circuit Q1 Location Switching Control Check Q1High Voltage is present Pilot Circuit CheckTip Drag Circuit Current Control, Display and CSD checksFront Panel Current Control Remote Current ControlCorner Slowdown CSD Volt Bias TestOK-To-Move Tests Pilot Resistor AdjustmentRefer to Appendix XII for OK-To-Move Circuit Diagram Service Troubleshooting Anti-Static Handling Procedures Section Repairs & Replacement ProceduresParts Replacement General Information ProcedureHandle Replacement External Parts ReplacementLeft/Right Side Panel Replacement Top Panel ReplacementFront Panel/Chassis Parts Replacement Access Panel Parts ReplacementRear Panel Parts Replacement Voltage Selection PC Board Replacement Three-Phase Contactor ReplacementGas Solenoid Assembly Replacement Secondary Water Solenoid Valve Assembly ReplacementConductivity Sensor Assembly Replacement Coolant Tank ReplacementFlow Switch Assembly Replacement Secondary Water Check Valve Replacement Base Assembly Parts ReplacementDC Inductor L2 Assembly Replacement 29KVA Transformer T1 Assembly ReplacementMain Contactor W1 or W2 Replacement Upper Chassis Parts ReplacementMotor M1 Assembly Replacement Pump Assembly ReplacementBxbx Do not damage Heatsink Auxiliary Transformer T3 Assembly ReplacementCoolant Pressure Gauge Replacement Pressure Gauge ReplacementPressure Switch Replacement Plasma or Secondary Gas Input Fitting ReplacementPlasma or Secondary Regulator Assembly Replacement Fuse F1 and F2 ReplacementControl Logic PC Board Assembly Replacement Switching Control PC Board Assembly ReplacementSecondary Gas Check Valve Replacement Main Heatsink Assembly Parts ReplacementAmp STR. Diode Replacement Diodes can overheat if not properly installedAmp STR Diode Replacement Relay ReplacementAmp REV Diode Replacement Hose Assembly Replacements Drain the coolant from the Coolant Tank per Sec- tion 4.02-F Replacement Procedures Replacement Procedures Parts List Breakdown Section Parts ListsOrdering Information ReturnsItem # Qty Description Catalog # External Power Supply Replacement Parts ListAccess Panel Replacement Parts Front Panel/Chassis Replacement Parts 01217 Rear Panel Replacement Parts 1323 Base Assembly Replacement Parts 00894 Upper Chassis Replacement Parts 01226 Main Heatsink Assembly Replacement Parts 00971 Power Supply Options And Accessories 01218 Parts Lists Lts Appendix I Input Wiring RequirementsAction Appendix II Sequence of Operation Block DiagramSystem With Standoff Control SC11 And Gas Control GC3000 Appendix III Typical Mechanized System Cable ConnectionsRemote Cables Appendix V CNC Interface Appendix VI 120 VAC Circuit Diagram Appendix VII Ladder Diagram 15 VDC Appendix Viii Signal Flow Block Diagram Appendix IX Start Circuit Diargram Appendix X Current Control / Display Circuit Diagram Appendix XI CSD Corner Slowdown Circuit Diagram OK OUT Appendix XII OK-TO-MOVE Circuit DiagramBlock Xiii HoseAppendix XIV System Schematic Appendix Weekly or Every 30 Arc Hours Daily Operational Checks or Every Six Arc HoursSix Months or Every 720 Arc Hours Twelve Months or Every 1500 Arc Hours