Lincoln Electric SVM153-A service manual Auxiliary Power Controls

B-7 B-7

OPERATION

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12. 6 - PIN CONNECTOR (AMPHENOL)

The 6-pin amphenol located on the control panel allows for connection of interfacing equipment.

13. WELD OUTPUT TERMINALS + AND -

These 1/2 - 13 studs with flange nuts provide welding connection points for the electrode and work cables. For positive polarity welding, the electrode cable con- nects to the “+” terminal and the work cable connects to this “-” terminal. For negative polarity welding, the work cable connects to the “+” terminal and the elec- trode cable connects to this “-” terminal.

AUXILIARY POWER CONTROLS

(Items 14 through 18 )

14. 120/240VAC RECEPTACLE

This is a 120/240VAC (14-50R) receptacle that provides 240VAC. Or, it can be split for 120VAC sin- gle-phase auxiliary power. This receptacle has a 50 amp rating. Refer to AUXILIARY POWER RECEP- TACLES section in the Installation section for further information about this receptacle. Also refer to the AUXILIARY POWER OPERATION later in this section.

15. 50 AMP CIRCUIT BREAKERS

These circuit breakers provide separate overload current protection for each 120V circuit at the 240V receptacle.

16. 120VAC RECEPTACLES

These two 120VAC (5-20R) receptacles provide 120VAC for auxiliary power. Each receptacle has a 20 amp total rating. Refer to AUXILIARY POWER RECEPTACLES in the Installation section for further information about these receptacles. Also refer to the AUXILIARY POWER OPERATION later in this section.

17. 20 AMP CIRCUIT BREAKERS

These circuit breakers provide separate overload cur- rent protection for each 120V receptacle.

18. GROUND STUD

Provides a connection point for connecting the machine case to earth ground for the safest grounding procedure. Refer to MACHINE GROUNDING in the Installation section for proper machine grounding infor- mation.

19. 20 AMP CIRCUIT BREAKER

This circuit breaker provides overload protection for the 120 VAC circuit in the 14-pin amphenol.

20. VOLTMETER +/- SWITCH

Changes the polarity display on the wire feeder.

21. 10 AMP CIRCUIT BREAKER

This circuit breaker provides overload protection for the 42 VAC circuit in the 14-pin amphenol.

22. 14 - PIN CONNECTOR (AMPHENOL)

For quick connection of interfacing equipment.

23. ARC CONTROL

The ARC CONTROL potentiometer is active in two modes: CC - STICK and CV - WIRE with different pur- poses in each mode.

CC- STICK mode: In this mode, the ARC CONTROL knob sets the short circuit current during stick welding. Increasing the number from 1 to 10 increases the short circuit current. This prevents sticking of the electrode to the plate at low welding current settings. This also increases spatter. It is recommended that the control be set to the minimum number without electrode stick- ing.

CV - WIRE mode: In this mode increasing the number from 1 to 10 changes the arc from soft and washed in to crisp and narrow. It acts as an inductance control. The proper setting depends on the application and operator preference.

In general, MIG welding performs best in the “SOFT” range and Innershield in the “CRISP” range.

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COMMANDER 500