Lincoln Electric FLEXTEC 500 P Operator's Manual page 30

FLEXTEC™ 500 P
Output Control Dial
Output control is conducted via a single turn potentiometer.
Adjustment is indicated by the meters.
When in remote modes, this control sets the maximum welding
current or voltage output. Full depression of a foot or hand amptrol
results in the preset level of current or voltage.
Volt Display Meter
• Prior to CV operation (current flow), the meter displays desired
preset voltage value (+/- .1V).
• Prior to STICK or TIG operation, the meter displays the Open
Circuit Voltage of the Power Source or four dashes if the output
has not been turned on.
• During welding, this meter displays actual average volts.
• After welding, the meter holds the actual voltage 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.
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 dashes 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.
CC-SMAW
CC-GTAW
CV-GAS
CV-Innershield
ArcLink
* It is normal for the lights to alternate between colors while welding.
** It is normal for the lights to alternate during OCV preset adjustment, depending on preset voltage level.
TM
VRD
Mode
OCV Green (OCV reduced)
While Welding Green or Red (depends on welding voltage)*
Weld Terminals Locally Controlled
Weld Terminals 'ON'
Green or Red (depends on open circuit voltage)**
Weld Terminals Remotely Controlled
OCV
Gun Trigger Closed
Green or Red (depends on open circuit voltage)**
Weld Terminals Remotely Controlled
Gun Trigger Open
Green (OCV reduced)
While Welding Green or Red (depends on welding voltage)*
Gun Trigger Closed
Green or Red (depends on open circuit voltage)**
OCV
Gun Trigger Open
Green (OCV reduced)
While Welding Green or Red (depends on welding voltage)*
Control - Local/Remote Toggle Switch
• Set the switch to 'local' to control output at the Flextec™ via 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-pin remote
connector or a wire feeder connected to the 14-pin connector.
Wire Feeder Voltmeter Polarity Switch
• This switch configures the 21 sense lead in the 14 pin connector
to the work weld terminal of the machine. It also configures the
292 lead to the User Interface board to determine if voltage
sensing needs to be configured for Electrode Negative Polarity
operation in "ArcLink" mode.
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 temperature 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 re-establish output.
VRD Lights
• There are two indicator lights on the case front of the Flextec™
500 P above the Voltage display to indicate the status of VRD
operation. As shipped, the VRD function is disabled. VRD is
enabled by setting dip switch number 5 to the on position on the
User Interface P.C. board. When VRD is active, a green light
indicates the open circuit voltage is less than 35V peak, a red
light indicates the OCV is at or above 35V peak, Both lights will
illuminate for 5 seconds upon power up. The behavior of the
VRD lights is listed in the table below (Figure C.1). While the
VRD lights are always active when VRD has been enabled, VRD
applies to the constant current modes of operation. Only in
these modes will the OCV be reduced.
Indicator Lights
TM
VRD "ON"
C-4
OPERATION
Figure C.1
TM
VRD "OFF"
No lights are active
No lights are active
No lights are active