Lincoln Electric 450 CE manual VRD Voltage Reduction Device Indicator Light, VRD Indicator Lights

b-6 OPERATION b-6

Amperage Display Meter

•Prior to STICK or TIG operation (current flow), the meter displays preset current value.

•Prior to CV operation, the meter displays four dash- es indicating non-presettable AMPS.

•During welding, this meter displays actual average amps.

•After welding, the meter holds the actual current value for 5 seconds. The displays blink indicating that the machine is in the "hold" period.

•Output adjustment while in the "hold" period results in the "prior to operation" characteristics

Weld Terminals On/Remote Toggle Switch

•This switch determines the trigger location.

•When set to the “ON” position, the weld terminals are at OCV (open circuit voltage) and ready to weld.

•When set to the “REMOTE” position, output is enabled through a remote trigger.

Control - Local/Remote Toggle Switch

•Set the switch to “Local” to control output at the machine by the Output Control dial.

•Set the switch to “REMOTE” to control output via a remote device (K857 hand amptrol or K870 foot amptrol) connected to the 6-pinremote connector or a wire feeder connected to the 14-pinconnector.

Thermal Light

•This status light indicates when the power source has been driven into thermal overload. If the output terminals were "ON", the output will be turned back on once the unit cools down to an acceptable tem- perature level. If the unit was operating in the "REMOTE" mode, the trigger will need to be opened before or after the thermal has cleared and closed after the machine has cooled down to an acceptable temperature to establish output.

VRD™ (VOLTAGE REDUCTION DEVICE) INDICATOR LIGHT

There are 2 indicator lights on the case front of the Flextec™ 450 CE above the Voltage LCD Display to indicate the status of VRD operation.

•A green light indicates the OCV (open circuit volt- age) is less than 35V.

•A red light indicates the OCV is at or above 35V. VRD™ is enabled via a dip switch on the Control P.C. board (see Figure B.3). This switch must be in the “On” position for the VRD™ function to be active and the lights to be enabled. If VRD™ is enabled, both lights will illuminate for 5 seconds at power up.

For each weld mode, the VRD™ lights function as shown in Table B.1:

TAbLE b.1

VRD Indicator Lights

	Mode		VRD “ON”	VRD “OFF”
CC-MMAW		OCV	Green (OCV reduced)
CC-GTAW		While welding	Green or Red (depends on weld voltage)*
CV-GAS		OCV	Red (OCV Not Reduced)
C V-Innershield			Weld Terminals ‘ON’
			Red (OCV Not Reduced)	No lights are
			Weld Terminals Remotely Controlled
				active
			Gun Trigger Closed
			Green (NO OCV)
			Weld Terminals Remotely Controlled
			Gun Trigger Open
		While welding	Green or Red (depends on weld voltage)*

*It is normal for the lights to alternate between colors while welding.

FIGURE b.3

Location of Control P.C. Board

VRD Mode Setting

- Switch #5 in the “ON” Position

ON 1 2 3 4 5 6 7 8

OFF

Dip Switch Location on Control P.C. Board

FLEXTEC™ 450 CE