Optional Low Open Circuit Voltage (Ocv) Welding Modes; Alternate Configuration Functions - Miller XMT 450 CC/CV Owner's Manual

9-4.

Optional Low Open Circuit Voltage (OCV) Welding Modes

Low OCV Operation
The unit can be optionally configured for low open circuit voltage (OCV) operation in Stick and Scratch Start TIG modes. When the unit is config-
ured for low OCV operation only a low sensing voltage (approximately 15 VDC) is present between the electrode and the workpiece prior to the
electrode touching the workpiece. Consult a Factory Authorized Service Agent for information regarding how to configure unit for low OCV weld-
ing operation.

9-5. Alternate Configuration Functions

There are 3 ways that the remote control can be configured to operate on this machine. The configuration of the meters can be changed by placing
the process selection switch into Stick mode and turning the output on and off 3−5 times within a few seconds, this can be done by triggering
a feeder or by activating the output on−off switch on a remote control. The amperage window will briefly display what mode is selected before
returning to preset display
C 1
C 2
C 3
.
A complete Parts List is available at www.MillerWelds.com
Configuration 1 is the default that the unit leaves the facto-
ry set for. Stick mode recognizes a remote plugged into
the preset output set at the panel, CC mode displays pre-
set panel control instead of the percentage of the remote.
Configuration 2 changes Stick modes remote operation.
When configuration 2 is selected Stick mode operates in
Panel Only control, meaning any remote control that is
plugged into the remote 14 control will be ignored and
have no effect on the output. When Stick mode is active,
a decimal point will be displayed in the amperage window.
Configuration 3 changes how the display works in the CC
mode. When configuration 3 is selected the amperage
window will display the percentage of preset amperage
being set from the remote amperage control, the panel will
set the maximum amperage. When CC mode is active, a
decimal point will be displayed in the amperage window.
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