Transcript
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2. Welding cables, the coverings of which are not capable of withstanding a conductor temperature of 85 , will be damaged if the coupling devices are used at the rating given above at an ambient air temperature of 40 .
Φ
PRE-FLOW"OFF" CRATEROFF WELDING ON
OFF
TORCHSW DELAY5s MAGNETICSW POSTGAS(0.2s) SOLENOIDVALVE NOLOADVOLTAGE DELAYVOLTAGE (0.4s)
OUTPUTVOLTAGE SLOWDOWN WIREFEEDER
WELDINGCURRENT STOPSAFTER 3min
FANCOOLINGDELAY DETECTWELDINGCURRENT 0.2s ※NOTE
CRATERON ON
TORCHSW
OFF
ON
OFF
DELAY5s MAGNETICSW POSTGAS(0.2s) SOLENOIDVALVE NOLOADVOLTAGE DELAYVOLTAGE (0.4s)
OUTPUTVOLTAGE SLOWDOWN
WIREFEEDER
WELDINGCURRENT
WELDING
CRATER STOPSAFTER 3min
FANCOOLINGDELAY 0.2s ※NOTE
DETECTWELDINGCURRENT
※NOTE:"O(Zero)second"whenMagneticSwitchis"ON"stateor"AlwaysON"fixed.
PRE-FLOW"ON" CRATEROFF TRIGGERIN4second
WELDING ON
OFF
TORCHSW DELAY4s MAGNETICSW POSTGAS(4s) SOLENOIDVALVE NOLOADVOLTAGE DELAYVOLTAGE (0.4s)
OUTPUTVOLTAGE SLOWDOWN WIREFEEDER
WELDINGCURRENT STOPSAFTER 3min
FANCOOLINGDELAY DETECTWELDINGCURRENT
CRATERON TRIGGERIN4second ON
TORCHSW
OFF
ON
OFF
DELAY4s MAGNETICSW POSTGAS(4s) SOLENOIDVALVE NOLOADVOLTAGE DELAYVOLTAGE (0.4s)
OUTPUTVOLTAGE SLOWDOWN WIREFEEDER WELDINGCURRENT
WELDING
CRATER STOPSAFTER 3min
FANCOOLINGDELAY DETECTWELDINGCURRENT
Three-phase Line Input Power
Welding Current Welding Voltage Wire Inching
Wire Diameter
GAS Check
Torch Switch
N.F.B 5A
RL
FAN
U.V.W
MS 20V 0V 19V
Control Power +24V +15V -15V +5 CV Circuit
10
MS
GAS Regulator
Three-phase Double Star Transformer
8A
Three-phase Synchronization Signals
Detect( Welding & Motor Voltage
Current Adjustment (Phase Control)
Voltage Adjustment (Phase Control)
MOTOR Power
Microprocessor Sequence Control (Setting) Unitary Adjustment Indivisual Adjustment Delay Voltage Gas Flow Reducing Energy Voltage by Output Cable (2 DIP SW) (6 Variable Resistors)
Phase Reactor
Duplication Control Rectifier SCR 1, 2, 3
Single-phase Full-wave Control Rectification
SCR Trigger Circuit
SCR 4, 5, 6
Three-phase Output Signal
SCR Trigger Circuit DC Motor Brush Voltage Feedback
SH
Detection Welding Current Current Amplifying Circuit
DC Reactor
M
Short & Arc Detection Circuit
+ -
TROUBLE WHEN POWER 'ON', POWER LAMP, COOLING FAN DOES NOT WORK
CAUSE
MEASUREMENT
1. POWER DOES NOT SUPPLY.
1. CHECK INPUT VOLTAGE ON MAGNETIC CONTACTOR. (3PHASE, 220V,380V,440V)
2. POWER S/W IS BAD
2. CHECK POWER S/W, IF NOT GOOD, REPLACE IT WITH GOOD.
3. CONTROL FUSE(F1) IS BROKEN DOWN 4. AUXILIARY TRANSFORMER IS BAD
3. REPLACE FUSE (250V, 5A)
5. WHEN COOLING FAN DELAY IS ADOPTED 6. POWER LAMP, FAN MOTOR IS BAD
5.FAN WORKS ON WELDING AFTER POWER "ON" 6. CHECK VOLTAGE BETWEEN CONNECTOR OF FAN MOTOR LINE(NO.6 & NO.63), 220VAC 1. CHECK SPECIFICATION(ON NAME PLATE)
4. CHECK PRIMARY & SECOND VOLTAGE OF AUX.TR. SECOND VOLTAGE(BETWEEN NO.3 & NO.4) SHOULD OUTPUT 220V. REPLACE IF NOTHING OR LESS THAN 220V.
1. SUPPLIED VOLTAGE & RATED INPUT VOLTAGE IS NOT THE SAME 2. COOLING FAN DOES NOT 2. CHECK BETWEEN MOTOR & WORK. FAN(REMOVE OBSTRUCTION) 3. MAGNETIC SWITCH IS BAD 3. CHECK VOLTAGE BETWEEN UPPER SIDE & LOWER SIDE OF MAGNETIC SWITCH. REPLACE IF NO VOLTAGE 4. MAIN TRANSFORMER IS 4. CHECK EACH PHASE VOLTAGE BAD OF SECONDARY OF MAIN TRANSFORMER. THE DIFFERENCE OF EACH RESULTS SHOULD BE MINIMUM(≤1V). IF NOT SO, REPLACE IT 5. SCR IS BAD. 5. REPLACE SCR WHEN GAS S/W IS 1. NO GAS IN BOMBE 1. FILL UP GAS 'ON', GAS IS NOT OUT 2. REGULATOR VALVE IS 2. OPEN REGULATOR VALVE. LOCKED. 3. GAS PATHWAY IS 3. CHECK A PATHWAY BOMBE BLOCKED. REGULATOR - HOSE - SOLENOID VALVE - TORCH LINER. 4. SOLENOID VALVE IS BAD 4. CHECK INPUT VOLTAGE OF SOL VALVE. IF 24V , CLEAN THE INNER OF SOL VALVE, OTHERWISE REPLACE IT . 5. CONTROL(9P)CABLE IS 5. REPAIR CABLE DISCONNECTED 6. GAS S/W IS BAD 6. REPLACE S/W 7. PCB IS BAD
7. REPLACE PCB
TROUBLE
CAUSE
WHEN GAS S/W OR 1. NO GAS IN BOMBE TORCH S/W IS 'ON', GAS PRESSURE IS 2. VALVE OPENNING IS NOT ENOUGH. WEAK. 3. GAS LEAKS.
MEASUREMENT 1. FILL UP GAS 2. OPEN VALVE ENOUGH 3. REPAIR GAS PATHWAY.
4. GAS PATHWAY IS BLOCKED 4. REPAIR & CLEAN GAS WITH OBSTRUCTION. PATHWAY. WHEN GAS S/W OR 1. GAS S/W OR TORCH S/W 1. REPLACE S/W TORCH S/W IS 'OFF', IS BAD. GAS IS OUT. 2. SOL VALVE OF WIRE 2. CLEAN SOL VALVE. FEEDER IS BAD. 3. CONTROL(9P)CABLE IS 3. REPAIR CABLE DISCONNECTED OR SHORT 4. PCB IS BAD GAS IS FLOWING BACKWARD TO WIRE FEEDER.
4. REPLACE PCB
1. GAS DIFFUSER IN TORCH 1. ASSEMBLE RIGHTLY. IS ASSEMBLED BADLY 2. TORCH LINER IS 2. ASSEMBLE OR REPLACE LINEASSEMBLED BADLY R, O-RING 3. TORCH CABLE IS 3. STRAIGHT TORCH CABLE. CROOKED.
WHEN TORCH S/W IS 1. POWER S/W IS NOT 'ON'. 1. POWER S/W "ON" 'ON', NO LOAD VOLTAGE IS NOT 2. TORCH S/W IS BAD 2. REPLACE S/W DETECTED. 3. TORCH S/W CONNECTOR IS 3. REPLACE CONNECTOR BAD 4. CHECK & REPAIR CONTROL 4. FUSE(1A) IN W/F IS CABLE, AND BETWEEN CONTROL BROKEN CABLE AND WELDING CABLE. 5. CONTROL(9P)CABLE IS 5. REPAIR CABLE DISCONNECTED 6. MS CONNECTOR IS BAD
6. REPLACE CONNECTOR
7. PCB판, MAGNETIC SWITCH 7. 1) LINE NO. 91-63 : AC220V IS BAD 2) LINE NO. 6-91 : AC220V → 1)IS DETECTED BUT 2)IS NOT DETECTED: REPLACE PCB → 1), 2)IS DETECTED BUT M/S DOES NOT WORK: REPLACE M/S WHEN TORCH S/W IS 1. TORCH, INCHING S/W IS 1. REPLACE S/W 'ON', WIRE FEEDER BAD MOTOR DOES NOT 2.CONTROL(9P)CABLE IS ROTATE. 2. REPAIR CABLE DISCONNECTED 3. AUX. TRANSFORMER IS 3. AMONG THE VOLTAGE OF LINE BAD NO. 11-9-12 IS NOT DETECTED 32V & 32V, REPLACE AUX.TR. 4. MOTOR FUSE(F2) IS 4. REPLACE FUSE(250V, 10A) BROKEN 5. PCB IS BAD 5. VOLTAGE OF BETWEEN LINE NO.9-13 IN CN11 IS NOT DETECTED (- 24VDC), REPLACE PCB
TROUBLE
CAUSE
INCAPABLE OF CONTROLLING WIRE FEEDING SPEED.
MEASUREMENT
6. W/F MOTOR IS BAD
6. REPLACE MOTOR
1. VR(VARIABLE RESISTOR) VOLUNE ON W/F IS BAD 2. CONTROL CABLE IS BAD
1. REPLACE VR
3. PCB IS BAD
3. REPLACE PCB.
2. REPAIR CABLE
ARC DOES NOT IGNITED.
1. VOLTAGE BETWEEN TORCH 1. CHECK & FASTEN CONNECTIO & BASE METAL IS NOT DETEC N OF TORCH, BASE METAL. TED 2. WIRE IS NOT FED. 2. CHECK PRESSURE LEVER OF W/F 3 PCB IS BAD 3. REPLACE PCB
ARC START IS BAD
1.WELDING CONDITION IS BAD 1. READJUSTMENT OF CURRENT & VOLTAGE 2. CONNECTION OF WELDING 2. CHECK & FASTEN WELDING CABLE IS BAD CABLE 3. TORCH TIP WORN OUT
INCAPABLE OF CONTROLLING WELDING VOLTAGE.
CURRENT DECREASE DURING WELDING.
WIRE FEEDING IS BAD.
3. REPLACE TIP
4. SURFACE OF BASE METAL 4. CLEAN & REMOVE DUST IS NOT CLEAN 1. VR(VARIABLE RESISTOR) 1. REPLACE VR VOLUNE ON W/F IS BAD 2. CONTROL CABLE IS BAD 2. REPAIR CABLE 3. PCB IS BAD
3. REPLACE PCB.
1. WELDING CABLE CAPACITY IS NOT ENOUGH. 2. CONNECTION OF WELDING CABLE IS BAD 1. TORCH TIP IS BAD
1. IF 600A IS, SELECT AT LEAST 70㎟ 2. CHECK & FASTEN WELDING CABLE 1. REPLACE TIP
2. TORCH LINER IS BAD
2. REPLACE LINER
3. PRESSURE LEVER STATE IS 3. READJUSTMENT OF PRESSURE BAD LEVER 4. PRESSURE LEVER IS BAD 4. REPLACE PRESSURE LEVER. 5. FEEDING ROLLER IS BAD 6. TORCH CABLE IS CROOKED. WHEN TORCH S/W IS 1. TORCH S/W IS BAD 'OFF', WIRE FEEDING 2. CONTROL(9P)CABLE IS IS GOING ON. DISCONNECTED 3. PCB IS BAD CRATER WORK
DOES
NOT 1. CRATER S/W IS BAD 2. PCB IS BAD
5. REPLACE ROLLER SUITABLE TO DIAMETER OF WIRE ROD. 6. STRAIGHT TORCH CABLE. 1. REPLACE TORCH S/W 2. REPAIR CABLE 3. REPLACE PCB 1. REPLACE S/W 2. REPLACE PCB
TROUBLE
CAUSE
MEASUREMENT
HEATING REGULATOR 1. AUX.TR IS BAD VOLTAGE IS NOT DETECTED. 2. FUSE(F3) IS BROKEN
1. VOLTAGE BETWEEN NO.81 & 82 OF AUX.TR IS NOT DETECTED 110VAC, REPLACE AUX.TR 2. REPLACE FUSE(250V, 3A)
BLOW HOLE OCCURS. 1. GAS IS NOT OUT
1. CHECK FLOW METER.
2. NOZZLE HAS MUCH SPATTER.
2. REMOVE SPATTER.
3. SHIELD GAS IS BLOWN BY 3. INSTALL WIND STOPPER. WIND.
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