Low Security Mode Selection; High Security Mode Selection; Keypad And Display Operation; Keypad And Display Description - Lincoln Electric SVM143-A Operator's Manual

B-5
S1 switch 7 ON = 4-Step without current interlock
operation:
Pwr Sources
ON
1 2 3 4 5
S1
1. Closing Trigger initiates gas flow.
2. Opening Trigger initiates gas preflow timer fol-
lowed by Run-in speed and strike voltage until
arc strike initiates welding. (Trigger is released
before arc is struck, but once established break-
ing arc stops the feeder operation).
3. Reclosing Trigger stops wire feed and initiates
burnback time, then gas postflow time.
4. Reopening Trigger stops gas flow if, or when,
postflow time is over.

Low Security Mode Selection

The DH-10 Control is set up for Low Security Mode
(See "Security Modes" in this section) by setting S1
DIP Switch 8 (Labeled "S"):
S1 switch 8 ON = Low Security mode ON
Pwr Sources
ON
1 2 3 4 5
S1
S1 switch 8 OFF = Low Security mode OFF (as
shipped)
Pwr Sources
ON
1 2 3 4
S1
NOTE: High Security mode must be OFF for Low
Security mode to function.

High Security Mode Selection

The DH-10 Control is set up for High Security Mode
(See Security Modes in this section) by setting S1
DIP switch 5 (Not labeled):
S1 switch 5 ON = High Security mode ON
Pwr Sources
ON
1 2 3 4 5
S1
S1 switch 5 OFF = High Security mode OFF (as
shipped)
Pwr Sources
ON
1 2 3 4 5
S1
OPERATION
Security
M 4
S1
6 7 8
Security
M 4
S1
6 7 8
Security
M 4
S1
5 6 7 8
Security
M 4
S1
6 7 8
Security
M 4
S1
6 7 8

KEYPAD AND DISPLAY OPERATION

R
COLD FEED
COLD FEED
FORWARD REVERSE
A
1 2
FEEDER
COLD FEED
2-STEP STD
4-STEP LOCK
SPOT
1 PREFLOW RUN-IN
VOLTS / WFS
SPOT
BURNBACK
2 POSTFLOW
TIMER
THE LINCOLN ELECTRIC COMPANY CLEVELAND, OHIO U.S.A.

Keypad and Display Description

Keypad - Eight key, membrane type with "snap" tac-
tile feel and embossed domes. Long life design.
Spatter resistant surface.
Displays - Two digital LED displays with 0.56 in.
(14.2 mm) character height. Top (3-1/2 digit) displays
Preset and Actual (while welding) arc voltage in volts
with (+) or (-) polarity indicators, and also displays all
timers in seconds. Bottom (4 digit) displays preset
wire feed speed in IPM, or m/m, and acceleration
selection.
Indicator Lights - Extra bright red LEDs for viewing
at almost any angle. Always indicate the feeder and
procedure selected, trigger mode being used and
function or timer being displayed.
Rotating Encoders - Knob controls increase or
decrease settings of volts and wire feed speed
(initially factory set to minimum). Alternately, the top
encoder adjusts timer settings and bottom selects
acceleration settings when selected for these
parameters to be displayed.

Power-Down Save

Power to the DH-10 is supplied and controlled from
the power source. The DH-10 automatically senses
the loss of power when the power source is turned off.
DH-10
V
GAS PURGE
WFS
B
REMOTE
PROCEDURE
V
VOLTS
TRIGGER
WIRE FEED SPEED
CONTROL
G3030
B-5