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Return to Master TOC
Return to Master TOC
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| THEORY OF OPERATION |
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| FIGURE E.5 — OPTIONAL CIRCUITS & DIGITAL DISPLAY BOARD |
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| ELECTRODE |
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| 67 |
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| INPUT |
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| INPUT |
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| CONTACTOR CURRENT TRANSDUCER |
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| FEEDPLATE |
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| SOLENOID |
| POLARITY |
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| TIMER OPTION |
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| V M |
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| MOTOR | TACH |
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| GUN |
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| MOTOR |
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| OVERLOAD |
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| ARMATURE |
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| CONTROL BOARD |
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| TACH FEEDBACK |
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| GUN TRIGGER |
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| WIRE | REMOTE |
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| 14 PIN AMPHENOL |
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| SPEED | VOLTAGE |
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| COLD |
| CC |
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| TRIGGER |
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| GAS |
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| FEED |
| CV |
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| INTERLOCK |
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| PURGE |
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| DIGITAL |
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| RUN IN |
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| DISPLAY |
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| BOARD |
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Return to Section TOC
Return to Master TOC
DIGITAL DISPLAY BOARD (control cable models only)
When the wire feeder is not welding, the left display shows the wire feed speed. The default units are “in/min” and may be changed to “m/min” through the setup menu. During welding the left display shows the average welding current, and will continue to hold the last value for 5 seconds after the trigger is released.
When the wire feeder is in idle the right display shows the preset voltage. This voltage will change with dif- ferent power sources and can be changed through the setup menu. During welding, the right display shows the average welding voltage, and will hold the last value for 5 seconds after the trigger is released.
OPTIONAL CIRCUITS
The preflow, burnback, and postflow timer kit gives control over the shielded gas at the beginning and end of the weld and prepares the end of the wire for the next arc start.
The preflow timer range is zero to 10 seconds. Preflow is used to purge the welding gun with shielding gas and helps to minimize porosity at the start of a weld.
The burnback timer range is zero to 0.25 seconds. Burnback controls the additional amount of time the power source output remains on after the wire drive has stopped feeding wire.
The postflow timer range is zero to 10 seconds. Use postflow to protect the weld while it cools.
Return to Section TOC
Return to Master TOC
NOTE: Unshaded areas of Block Logic Diagram are the subject of discussion
