Voltage control response, As shown in table b.2, Operating instructions – Lincoln Electric NA-5S User Manual
Page 32
TABLE B.2 – STOPPING SEQUENCE SETTINGS.
When “Stop” Button
is Pressed
Older Models
Newer Models*
Feed motor stops and
Lead #693 to Pin 3
electrode burns back with
Lead #690 to Pin 4
contactor delay (standard)
Feed motor inches up and
Lead #693 to Pin 1
electrode burns back with
Lead #690 to Pin 4
contactor delay
Feed motor inches up and
Lead #693 to Pin 1
contactor opens
Lead #690 to Pin 2
(no burnback)
*NOTE:
VOLTAGE CONTROL
RESPONSE
The NA-5 is provided with selectable voltage
control response. Proper setting depends on
the power source and process being used.
Refer to the appropriate power source
connection diagram for the proper
connection of the jumpers located on the
NA-5 Voltage P.C. Board, shown in Figure
B.3.
To change the voltage control response:
1. Turn off all input power to the NA-5
control.
2. Open the control box.
3. Locate the Voltage P.C. Board
mounted on the right side of the box.
Position the jumper plugs on the
Voltage P.C. Board per the
appropriate power source connection
diagram.
1
2
3
4
Switch #2
1
2
3
4
Switch #2
1
2
3
4
Switch #2
OPERATING INSTRUCTIONS
B-9
B-9
NA-5
Indicates switch in up position
Indicates switch in down position
Indicates switch position does not matter
NA-5
VOLTAGE
A
D
B
RED
JUMPER
PLUG
WHITE
JUMPER
PLUG
FIGURE B.3 – VOLTAGE CONTROL
RESPONSE JUMPER PLUG
LOCATIONS.