Lincoln Electric IM714 POWER WAVE 455 - Manual (Page 13)

A-5 INSTALLATION
POWER WAVE 455
A-5
Electrode Voltage Sensing
Enabling or disabling electrode voltage sensing is
automatically configured through software. The 67
electrode sense lead is internal to the control cable to
the wire feeder and always connected when a wire
feeder is present.
I mportant: The electrode polarity must be config-
ured at the feed head for all semi-automatic
processes. Failure to do so may result in extreme-
ly high welding outputs.
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POWER WAVE TO SEMI-AUTOMAT-
IC POWER FEED WIRE FEEDER
INTERCONNECTIONS
The Power Wave 455 and semi-automatic POWER
FEED family communicate via a 5 conductor control
cable (K1543). The control cable consists of two
power leads, one twisted pair for digital communica-
tion, and one lead for voltage sensing. The cables are
designed to be connected end to end for ease of
extension. The output receptacle on the Power Wave
455 is located beneath the spring loaded output cover
at the bottom of the case front. The input receptacle
on the Power Feed is typically located at the back of
the feeder, or on the bottom of the user interface.
For convenience sake, the electrode and control
cables can be routed behind the left or right strain
reliefs (under the spring loaded output cover), and
along the channels formed into the base of the Power
Wave, out the back of the channels, and then to the
wire feeder.
Due to the flexibility of the platform the configuration
may vary. The following is a general description of the
system. For specific configuration information, consult
the semi-automatic Power Feed instruction manual.
Enable the voltage sense leads as follows:
TABLE A.2
Process Electrode Voltage Work Voltage
Sensing 67 lead * Sensing 21 lead
GMAW 67 lead required 21 lead optional
GMAW-P 67 lead required 21 lead optional
FCAW 67 lead required 21 lead optional
GTAW Voltage sense at studs Voltage sense at studs
GMAW Voltage sense at studs Voltage sense at studs
SAW 67 lead required 21 lead optional
CAC-C Voltage sense at studs Voltage sense at studs
* The electrode voltage 67 sense lead is integral to
the control cable to the wire feeder.
In extremely sensitive applications requiring voltage
sense leads, it may be necessary to route the control
cable (67 lead) and the work voltage sense lead (21
lead) away from the electrode and work welding
cables. For more information regarding the placement
of voltage sense leads, see the section entitled
"Welding with Multiple Power Waves."
Work Voltage Sensing
The standard Power Wave 455’s default to the work
stud (work sense lead disabled)
For processes requiring work voltage sensing, con-
nect the (21) work voltage sense lead (K940) from the
Power Wave work sense lead receptacle to the work
piece. Attach the sense lead to the work piece as
close to the weld as practical, but not in the return cur-
rent path. Enable the work voltage sensing in the
Power Wave as follows:
• Do not touch electrically live
parts or electrodes with your
skin or wet clothing.
• Insulate yourself from the work
and ground.
• Always wear dry insulating gloves.
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1. Turn off power to the power source at the discon-
nect switch.
2. Remove the front cover from the power
source.
3. The control board is on the left side of
the power source. Locate the 8-position
DIP switch and look for switch 8 of the
DIP switch.
O N
1
2
3
456
7
8
CAUTION
WARNING
4. Using a pencil or other small object, slide the switch
DOWN to the OFF position if the work sense lead is
NOT connected . Conversely, slide the switch UP to
the ON position if the work sense lead is present.
5. Replace the cover and screws. The PC board will
“ read” the switch at power up, and configure the
work voltage sense lead appropriately.