Miller Electric XMT 456 CC Meter Functions For CV Only Models, Preset Volts Blank, Pulse Display

5-3. Meter Functions For CV Only Models

.The meters display the actual weld output values for approximately three seconds after the arc is broken.

	Mode			Meter Reading At Idle				Meter Reading While Welding
				V		A			V		A
	MIG			24.5					24.5		250
				Preset Volts		Blank			Actual Volts	Actual Amps
				V		A			V		A
	Pulsed			PPP		PPP			24.5		250
	MIG
			Pulse Display		Pulse Display				Actual Volts	Actual Amps
5-4. Front Panel Controls For CC/CV Models
		1					2	3		4

7

1 Power Switch

.The fan motor is thermostatically

controlled and only runs when cooling is needed.

2Voltmeter (see Section 5-5)

3Ammeter (see Section 5-5)

4V/A (Voltage/Amperage) Adjust Control

5Voltage/Amperage Control Switch

For front panel control, place switch in Panel position and use the V/A Adjust control.

For remote control, make connections to Re- mote 14 receptacle, and place switch in Re- mote position. In most modes, remote control is a percent of the V/A Adjust control setting. Value selected on V/A Adjust is maximum

6 5

available on remote. In the MIG mode, re- mote control provides full range of unit output regardless of V/A Adjust control setting.

6 Mode Switch

The Mode switch setting determines both the process and output On/Off control (see Sec- tion 5-6). Source of control (panel or remote) for the amount of output is selected on the V/A Control switch.

For Air Carbon Arc (CAC-A) cutting and gouging, place switch in the Stick position. For best results, place Inductance/Dig con- trol in the maximum position.

7 Inductance/Dig Control

Control adjusts Dig when the Stick or CC mode is selected on the Mode switch. When

196 445

set towards minimum, short-circuit amper- age at low arc voltage is the same as normal welding amperage.

When set towards maximum, short-circuit amperage is increased at low arc voltage to assist with arc starts as well as reduce stick- ing while welding (see volt-ampere curves in Section 4-3).

Select setting best suited for application.

Control adjusts inductance when MIG posi- tion is selected on the Mode switch. Induc- tance determines the “wetness” of the weld puddle. When set towards maximum, “wet- ness” (puddle fluidity) increases.

When Pulsed MIG, or one of the TIG modes is selected, this control is not functional.

OM-203 034 Page 23