ESAB PCM-875A Manuel d'instructions

INSTRUCTION MANUALPCM-875PLASMA ARC CUTTING PACKAGEF15-335-E July, 2007These INSTRUCTIONS are for experienced operators. If you are not fully

SECTION 1 DESCRIPTION9Table 1-3. PT-27 Torch SpecificationsCurrent Capacity (100% duty)Length of Service LinesWeight 25 ft 50 ft80 A DCSP25 ft

SECTION 2 INSTALLATION102.1 GENERALProper installation is important for satisfactory and trouble-free operation of the PCM-875 cutting package. I

SECTION 2 INSTALLATION111. For operator safety, the torch connections are located on the output terminal board behind the l

SECTION 2 INSTALLATION12WORKSAFETYGROUNDPT-27Allow at least 10 ft. (3m)between work and power sourceTORCHSWITCHRECEPTACLEACCESS DOOR FORTORCH CONNEC

SECTION 2 INSTALLATION131. Remove cover from the PCM-875 power source.2. Locate the Input Bridge (IBR) and TB5 terminalblock (see Fig. 1) on the lef

SECTION 2 INSTALLATION14PILOT ARC CABLE - 37339 (50’)37340 (100’)POWER CABLE - 37341 (50’)37342 (100’)ARC STARTER37338WORKCABLE(25’)(Supplied withPC

SECTION 2 INSTALLATION15Figure 2.4 Connection Diagram - PCM-875/PT-20AM with Arc StarterView A-A“A”“B”“C”“D”“A”“B”“C”“D”PILOT ARC CABLE - 37339 (50’

SECTION 3 OPERATION163.1 OPERATIONELECTRIC SHOCK can kill. Do NOT operate the unit with the cover removed. Do NOT apply power to the unit wh

SECTION 3 OPERATION17Figure 3-1. PCM-875 ControlsE. When ending a cut, the torch switch should bereleased (press and release if using trigger LO

SECTION 3 OPERATION18WHEN THE ARC BREAKSTHROUGH THE WORK,BRING THE TORCH TO ANUPRIGHT POSITION ANDPROCEED TO CUT.TO START A PIERC

This equipment will perform in conformity with the description thereof contained in this manual and accompa-nying labels and/or inserts when installed

SECTION 4 MAINTENANCE194.1 GENERALIf this equipment does not operate properly, stop workimmediately and investigate the cause of the malfunc-tion.

SECTION 4 MAINTENANCE204.4 FLOW SWITCH (FIGURE 4-2)When excessive contamination is found in the air, theflow switch (FS-4) should be disassembled

SECTION 5 TROUBLESHOOTING21The cause of control malfunctions can be found byreferring to the sequence of operations and electricalsc

SECTION 5 TROUBLESHOOTING22C. The Power light is on, but nothing happens when the torch switch is depressed. Fault lightdoes not activate.NOTE: Unplu

SECTION 5 TROUBLESHOOTING23the ohmmeter should read a direct short. If not then it should read open.b. If the switch is malfunctioning, repl

SECTION 5 TROUBLESHOOTING24F. High Frequency and Pilot Arc are on but Main Arc does not transfer.1. Make sure work clamp is connected to work materia

SECTION 5 TROUBLESHOOTING255.3REFERENCE VOLTAGE CHECKSA. Control Board Assembly (PCB1)1. LEDsLED-1 - Torch SwitchLED-2 - High FrequencyLED-

SECTION 5 TROUBLESHOOTING26TORCH SWITCHOPEN CLOSEGAS SOLENOID VALVEPREFLOWFLOW SWITCH CLOSEFAULT OVERLOAD LIGHTHF CIRCUITINVERTERCUTTING ARC

SECTION 5 TROUBLESHOOTING2710 SEC PUSH RELEASE PUSH RELEASE TORCH SWITCH OPEN CLOSE GAS SOLENOID VALVEPOSTFLOW CLOSE

28D-36587Figure 5-1. Schematic Diagram, PCM-875, 208/230 V, 50/60 Hz, 1 or 3-Phase

2USER RESPONSIBILITYThis equipment will perform in conformity with the description thereof contained in this manual and accompanyinglabels and/or inse

29D-36595Figure 5-2. Wiring Diagram (Sheet 1 of 2), PCM-875, 208/230 V, 50/60 Hz, 1 or 3-Phase

30Figure 5-3. Wiring Diagram (Sheet 2 of 2), PCM-875, 208/230 V, 50/60 Hz, 1 or 3-PhaseD-36595

31D-36597-BFigure 5-4. Schematic Diagram, PCM-875, 400/460 V, 50/60 Hz, 3-Phase1 2 3 4 5 6

32D-36598Figure 5-5. Wiring Diagram (Sheet 1 of 2), PCM-875, 400/460 V, 50/60 Hz, 3-Phase

33D-36598Figure 5-6. Wiring Diagram (Sheet 2 of 2), PCM-875, 400/460 V, 50/60 Hz, 3-Phase

34D-36715-AFigure 5-7. Schematic Diagram, PCM-875, 575 V, 60 Hz, 3-Phase

35D-36716Figure 5-8. Wiring Diagram (Sheet 1 of 2), PCM-875, 575 V, 60 Hz, 3-Phase

36D-36716Figure 5-9. Wiring Diagram (Sheet 2 of 2), PCM-875, 575 V, 60 Hz, 3-Phase

SECTION 6 REPLACEMENT PARTS376.1 GENERALReplacement Parts are illustrated on the following fig-ures. When ordering replacement parts, order by partn

SECTION 6 REPLACEMENT PARTS38Fig. 6-1. PCM-875 Power Source, Front ViewItem Qty. Part CircuitNo. Req. No. Description Symbol1 1 137630611 KNOB2 1 20

3WARNING: These Safety Precautions are foryour protection. They summarize precaution-ary information from the references listed inAdditional Sa

SECTION 6 REPLACEMENT PARTS39Item Qty. Part CircuitNo. Req. No. Description Symbol21 1 952150 BRIDGE 60ADC 100NS 600 V (includes PAD - 951192) D122

SECTION 6 REPLACEMENT PARTS40Item Qty. Part CircuitNo. Req. No. Description Symbol51 1 952150 BRIDGE 60 ADC 100NS 600 V (includes PAD - 951192) D152

SECTION 6 REPLACEMENT PARTS41Fig. 6-4. PCM-875 Power Source, Right Side View (208/230)Item Qty. Part CircuitNo. Req. No. Description Symbol80 1 3594

SECTION 6 REPLACEMENT PARTS42Item Qty. Part CircuitNo. Req. No. Description Symbol110 1 32914 CONTROL TRANSFORMER ASS'Y T2111 1 951962 RESISTOR

SECTION 6 REPLACEMENT PARTS43Item Qty. Part CircuitNo. Req. No. Description Symbol140 1 954673 LABEL CNC INTERFACE141 1 952026 TERM. BLOCK 7 POS 25

SECTION 6 REPLACEMENT PARTS44Item Qty. Part CircuitNo. Req. No. Description Symbol151 1 21710 FILTER REGULATOR152 1 10Z30 ADAPTOR B/A-WM x 1/4 NPTM1

SECTION 6 REPLACEMENT PARTS45INSTRUCTION MANUAL CHANGESThe "A" edition (2/98) of this manual covers the following changes:1. Each replacem

46

F15-335-E 07/2007 Printed in U.S.A.IF YOU DO NOT KNOW WHOM TO CALLTelephone: (800) ESAB-123/ Fax: (843) 664-4452/ Web:http://www.esab.comHours: 7:30 A

4FUMES AND GASES -- Fumes andgases, can cause discomfort or harm,particularly in confined spaces. Donot breathe fumes and gases. Shield-ing

5a. Éloigner suffisamment tous les matériaux combus-tibles du secteur où lon exécute des soudures ou descoupes à larc, à moins de les recouvr

6des câbles de grue ou divers chemins électriques.g. Empêchez lapparition de toute humidité, notammentsur vos vêtements, à la surface de lemplacemen

SECTION 1 DESCRIPTION71.1 GENERALThe PCM-875 is a compact, completely self-containedplasma cutting system. As shipped, the system is fullyassemb

SECTION 1 DESCRIPTION81.4 SPECIFICATIONSTable 1-2. PCM-875 Specifications*Duty cycle is based on a 10-minute period; therefore, a 60-percent d