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VER 2. 0
- 34 -
8-3. Troubleshooting(Dynamic Auto 500M)
No noload output voltage, Feeding motor On,
Enable speed control on inching, Fan motor On
1. Check the magnetic contactor
2. Check the On/Off control for CR1, CR2, CR3, CR5(PCB EX02)
- Torch S/W On
3. Check the output voltage(27V) for magnetic contactor
4. Check the output voltage(V1~V6) for main transformer
No noload output voltage, Feeding motor Off,
Disable speed control on inching, Fan motor On
1. Check the LED & Relay(PCB EX01, EX02) - Torch S/W Off
- EX01 : Light On for LED1, LED2
- EX02 : Light On for LED2, LED4 and Off for relay
2. Check the On/Off control for CR1, CR2, CR3, CR5(PCB EX02)
- Torch S/W On
3. Check the connection for feeder control cable
No noload output voltage, Feeding motor Off,
Disable to control feeding speed on inching, Fan
motor Off
1. Check the fuse(F4, F5)
2. Check the output voltage(V10, V12, V13) for
control transformer(1 phase)
3. Check the output voltage(V7, V8, V9) for
control transformer(3 phase)
Disable to control for output voltage
1. Check the voltage control on crater welding
2. Check the LED3(PCB EX01) luminosity by voltage control
on feeder after torch S/W On
3. Check the feeder control cable
1. Check the overload lamp
Stop welding, No noload voltage
BEFORE THE CHECK !
- Check the Power Lamp On
- Check the Input Powerline Fuse & MCCB
- Check the Input Connecting Power
- Check the Power Switch On
1. Check the fuse(F3)
2. Check the output voltage(V12, V13) for control transformer
(1 phase)
3. Check the relay(CR2)(PCB EX02)
4. Change the PCB(EX02)
5. Check the feeder control cable
6. Change the SCR(SCR7)
Stop the feeding motor
Hunting the welding voltage
1. Check the output voltage(V12, V13) for control transformer
(1, 3 phase)
2. Check the changing noload voltage by voltage control on
feeder after yorch S/W On
- 500A : Noload voltage 50~63(5)V
- 600A : Noload voltage 60~74(5)V
3. Change the pin No.25 & 26 in CN4(PCB EX01)
4. Change the connecting terminal for control transformer
(1, 3 phase)
TROUBLE
REMEDY
Summary of Contents for Dynamic auto 350M
Page 11: ...VER 2 0 10 2 2 Manufacturer s Rating Label...
Page 24: ...VER 2 0 23 5 1 2 Crater ON 5 1 3 Crater HOLD...
Page 29: ...VER 2 0 28 SECTION 7 FUNCTION DIAGRAM 7 1 DYNAMIC AUTO 350M...
Page 38: ...VER 2 0 37 9 1 DYNAMIC AUTO 500M OPTION EX03 PCB CT1 INCLUDED...
Page 39: ...VER 2 0 38 SECTION 10 PARTS LIST 10 1 Main Assembly Dynamic Auto 350M...
Page 41: ...VER 2 0 40 10 2 Main Assembly EX PCB Type Dynamic Auto 500M...