Lincoln Electric IM716 POWER WAVE 455STT - Manual (Page 13)

A-5 INSTALLATION
POWER WAVE 455/STT
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 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/STT 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 communication, and
one lead for voltage sensing. The cables are designed to
be connected end to end for ease of extension. The out-
put receptacle on the Power Wave 455/STT 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 sys-
tem. 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
STT 67 lead required 21 lead required
GTAW Voltage sense at studs Voltage sense at studs
SMAW 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.
Work Voltage Sensing
The standard Power Wave 455/STT is shipped with the
work voltage sense lead enabled.
For processes requiring work voltage sensing, connect
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 current
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.
• Alwoays wear dry insulating gloves.
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1. Turn off power to the power source at the disconnect
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.
4. Using a pencil or other small object, slide
the switch right to the OFF position if the
work sense lead is NOT connected.
Conversely, slide the switch 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.
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CAUTION
WARNING