Output Contactor Remote, Electrode POS NEG

When a Remote Current or Voltage Control is being used, the remote control functions as a fine amperage or voltage adjustment for the AMPERAGE & VOLTAGE adjustment control setting of the welding generator. For example: If the AMPERAGE & VOLTAGE adjustment control on the welding generator is set at midrange, the Remote Current or Voltage Control will provide (from minimum to maximum adjustment) fine amperage or voltage adjustment of one half of the welding generator output for the amperage range selected on the AM- PERE RANGES switch. For complete remote control of the output, rotate the front panel AMPERAGE & VOLT- AGE control to the maximum position.

If remote current or voltage control is not desired, place the CURRENT CONTROL switch in the PANEL posi- tion. Only the front panel controls will then adjust the output.

4-3. OUTPUT/CONTACTOR SWITCH (Figure 4-1)

OUTPUT/

CONTACTOR

REMOTE

WARNING: ELECTRIC SHOCK can kill.

• Do not touch live electrical parts.

•Do not touch weld output terminals when contactor is energized.

•Do not touch welding wire or electrode holder and work clamp at the same time.

When the OUTPUT/CONTACTOR switch is in the ON position, open-circuit voltage is present at the weld out- put terminals for as long as the engine is running.

If remote contactor control is desired, make connec- tions to either the REMOTE-5 or REMOTE-14 recepta- cle as instructed in Section 3-2 or 3-3. Place the OUT- PUT/CONTACTOR switch in the REMOTE position. Open-circuit voltage is present at the weld output termi- nals when the Remote Contactor Control switch is closed.

If remote contactor control is not desired, place the OUTPUT/CONTACTOR switch in the ON position. Open-circuit voltage will be available at the weld output terminals whenever the engine is running.

4-4. AC/DC SELECTOR SWITCH (Figure 4-1)

ELECTRODE POS.

(+)

ELECTRODE
NEG.
(–)	AC

WARNING: ELECTRIC SHOCK can kill.

• Do not use AC output in damp areas, if movement is confined, or if there is a danger of falling.

•Use AC output ONLY if required for the weld- ing process.

•If AC output is required, use remote output control.

•Read and follow Safety Precautions at be- ginning of welding generator Owner’s Manu- al.

CAUTION: ARCING can damage switch contacts.

•Do not change the position of the AC/DC Se- lector switch while welding or under load.

Arcing causes the contacts to become pitted and eventually inoperative.

The Selector switch allows the operator to select DC ELECTRODE NEGATIVE (–), DC ELECTRODE POSI- TIVE (+), or AC without changing weld output connec- tions.

4-5. CIRCUIT BREAKER FOR CONTROL CIR- CUITRY (Figure 4-1)

CIRCUIT

BREAKER

Two circuit breakers, CB5 and CB6, are provided on the CV-2 panel. Circuit breaker CB5 protects the primary of transformer T2 and the unit wiring from overload and damage. If CB5 opens, there would be no 115 volts ac or 24 volts ac output and the wire feeder would stop. Circuit breaker CB6 protects transformer T2 and the unit wiring from overload and damage. If CB6 opens, there would be no 24 volts ac output and the wire feeder would stop if it was using 24 vac. For circuit breaker resetting and ad- ditional information, see Section 6-2.

Miller Electric CV-2 owner manual Output Contactor Remote, Electrode POS NEG, Circuit Breaker