Weldforce 202T AC/DC
© Weldclass 2020 | E.&O.E. 21
4.8 VRD Function (MMA / Stick)
This function only applies to Stick (MMA) mode & is not applicable to TIG welding.
VRD function reduces the welding machines’ open circuit voltage (OCV, or no-load voltage) from 95V to a
much safer level of approximately 15V. OCV is the voltage measured across the positive and negative
terminals when welding is not in progress.
The VRD function will de-activate to allow full welding power/voltage when the operator strikes an arc
and the resistance between the electrode and work piece is less than 200 Ohms (i.e. metal to metal
contact).
When the VRD function is active (i.e. when in MMA mode & welding is NOT in progress), the “VRD” indicator
LED on control panel will be lit. During MMA/stick welding, LED will turn off to indicate that VRD has been
turned off to allow welding.
4.9 LCD Multi-Function Display
When welding is not in progress the LCD Readout (10) displays the setting selected/being adjusted
using the Selection Knob (9).
During welding the LCD Readout displays the actual welding current.
Also displays error codes if the protection system (12) is activated.
4.10 Error/Over Temperature Indicator Light
Error/Over Temperature Indicator Light (12) illuminates when duty cycle is exceeded and thermal
protection is activated. When thermal protection is activated, welding output will be disabled until
machines cools sufficiently and overload indicator lamp goes out.
This may also activate if there are other issues or errors.
When there is an error the LCD screen will display an error code to indicate what the error is. Refer
to the following table for error code explanations.
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