Lincoln Electric IM691 POWER WAVE 455R (CE) - Manual (Page 13)

A-6 INSTALLATION
POWER WAVE 455/R (CE)
A-6
Work Voltage Sensing
The Power Waves are shipped from the factory with
the work sense lead enabled.
For processes requiring work voltage sensing, con-
nect the (21) work voltage sense lead from the Power
Wave to the work. Attach the sense lead to the work
as close to the weld as practical. Enable the work volt-
age 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.
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.
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 left 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.
Electrode Voltage Sensing
Enabling or disabling electrode voltage sensing is
automatically configured through software. The 67
electrode sense lead must be connected at the wire
feeder.
VOLTAGE SENSING
The best arc performance occurs when the Power
Waves have accurate data about the arc conditions.
Depending upon the process, inductance within the
electrode and work lead cables can influence the volt-
age apparent at the studs of the welder. Voltage
sense leads improve the accuracy of the arc condi-
tions and can have a dramatic effect on performance.
If the voltage sensing is enabled but the sense
leads are missing or improperly connected,
extremely high welding outputs may occur.
------------------------------------------------------------------------
Do not tightly bundle the work sense lead to the work
lead.
The sense leads connect to the Power Wave at the
four pin connector located underneath the output stud
cover. Lead 67 senses electrode voltage. Lead 21
senses work voltage.
Enable the voltage sense leads as follows:
TABLE 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
SAW 67 lead required 21 lead optional
* The electrode voltage 67 sense lead is integral to the
control cable to the wire feeder.
WARNING
O N
1
2
3
456
7
8
CAUTION