Operation; Safety Precautions; Duty Cycle - Lincoln Electric DH-10 Operator's Manual

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SAFETY PRECAUTIONS

WARNING
ELECTRIC SHOCK can kill.
• Do not touch electrically live parts such
as output terminals or internal wiring.
• Unless using cold feed feature when inch-
ing with gun trigger, electrode and drive mech-
anism are "hot" to work and ground and could
remain energized several seconds after the
gun trigger is released.
• Turn OFF input power at welding power
source before Control switch setup or
changing drive roll and/or guide tubes.
• Welding power source must be connected
to system ground per the National
Electrical Code or any applicable local
codes.
• Only qualified personnel should
operate this Equipment.
Observe all additional Safety Guidelines detailed
throughout this manual.

DUTY CYCLE

The DH-10 models are rated at 60% duty cycle * for a
maximum current of 600 amps.
* Based on a 10 minute time period (6 minutes on, and 4 minutes off).
DH-10 CONTROL SWITCH SETUP
Initial set up of the DH-10 control for the system com-
ponents being used and for general operator prefer-
ences is done using a pair of 8-pole DIP switches
located inside the DH-10 control box.
Setup DIP Switch Access
1) Shut off the input power to the DH-10 control by
turning off the power at the welding power source
it is connected to.
2) Remove the two screws on the top of the DH-10
control box door and swing the door down to
open.
3) Locate the two 8-pole DIP switches, near the top
left corner of the DH-10 Control P.C. board,
labeled S1 and S2.
4) Switch settings are only programmed during input
power-up restoration.

OPERATION

Setting the DIP Switches
The DIP switches are each labeled with an "ON"
arrow showing the on direction for each of the 8 indi-
vidual switches in each DIP switch (S1 and S2). The
functions of these switches are also labeled and set
as described below:
Pwr Sources
ON
1 2 3 4
S1
Wire Drive Head Selection
The DH-10 control is set up for proper presettable
wire feed speed by setting S2 DIP switches (1 to 4) for
Head 1 (left side head) and DIP switches (5 to 8) for
Head 2 (right side head) as appropriate per the follow-
ing examples for the head specification and DH drive
external gear selection being used:
NOTE: Set the proper 4 switches labelled for Head 1
(Left Head) or Head 2 (Right Head) as appropriate for
the way that Head is being used.
For K1499-5 (DH-10 Bench) with Left Head 35-500
IPM (0.89-12.7 m/m) & Right Head 55-825 IPM
(1.40-21.0 m/m) Low Speed Ratio set S2 DIP Switch
as follows:
For K1499-5 (DH-10 Bench) with Left Head 50-750
IPM (1.25-19.0 m/m) & Right Head 80-1250 IPM
(2.00-31.8 m/m) High Speed Ratio set S2 DIP Switch
as follows: (initial factory setting)
DH-10
Security
HEAD 1
M 4
S1
ON
5 6 7 8 1 2 3
S2
HEAD 2
HEAD 1
S2
ON
1 2 3 4 5 6 7 8
S2
HEAD 2
HEAD 1
S2
ON
1 2 3 4 5 6 7 8
S2
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HEAD 2
S2
4 5 6 7 8