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When the “WATER COOLER PRESSURE” light
turns on, release the key. If this key has been
pressed for 30 seconds and the ‘WATER COOLER
PRESSURE’ light still did not turn on, check the
water cooler for adequate fluid level.
5. WIRE FEEDER 1 +/- POLARITY KEY: Press this
key to change the present voltage sensing polari-
ty of wire feeder 1. The present polarity of wire
feeder 1 is indicated by the “WIRE FEEDER 1+
POLARITY” light. If wire feeder 1 is set for positive
voltage sensing polarity, this light is turned on.
6. WIRE FEEDER 1 ELECTRODE SENSE LEAD
KEY: Press this key to enable or disable the elec-
trode sense lead (lead #67) of wire feeder 1. When
enabled, voltage sensing is done by the electrode
sense lead. When disabled, voltage sensing is
done at the Power Wave output terminal. When
enabled, the “WIRE FEEDER 1 ELECTRODE
SENSE LEAD ENABLED” light will be illuminated.
7. WIRE FEEDER 1 WORK SENSE LEAD KEY:
Press this key to enable or disable the work sense
lead (lead #21) of wire feeder 1. When enabled,
voltage sensing is done by the work sense lead.
When disabled, voltage sensing is done at the
Power Wave output terminal. When enabled, the
“WIRE FEEDER 1 WORK SENSE LEAD
ENABLED” light will be illuminated.
WIRE FEEDER SETUP DESCRIPTION
The Power Wave may be set up for either positive
or negative arc voltage sensing using any two of
the following places:
1. the positive output terminal of the Power Wave
2. the negative output terminal of the Power Wave
3. the electrode sense lead (67 lead) of the wire
feeder
4. the work sense lead (21 lead) of the wire feeder
The SETUP Overlay allows you to select between
which two places arc voltage will be sensed.
Once the selection is made it is not necessary to
reconfirm the selection every time a new overlay is
used or a wire feeder is replaced with another one.
The selection will remain until it is changed with
the SETUP Overlay.
When welding with a stick procedure, the arc volt-
age is automatically measured between the Power
Wave’s output studs.
I. Select arc voltage sensing polarity first.
+/- POLARITY KEY
A. Positive Voltage Sensing Polarity:
In most welding applications the electrode cable is
connected to the + output terminal and the work
cable is connected to the - output terminal of the
power source. This is the positive voltage sensing
polarity, illustrated by Figure B.10. When the
Power Wave and the wire feeder(s) are connected
in this manner, the arc voltage can be measured in
one of four ways. These four ways are shown in
Table B.1.
Table B.1: Positive Voltage Sensing Options
Positive Voltage Reference Negative Voltage Reference
+ Output Terminal - Output Terminal
+ Output Terminal Work Sense (21) Lead*
Electrode Sense (67) Lead - Output Terminal
Electrode Sense (67) Lead Work Sense (21) Lead*
* Consult the factory before using this option.
Use the ELECTRODE SENSE LEAD KEY to
select either the + output terminal or the electrode
sense (67) lead for the positive voltage reference.
The work sense (21) lead is used only in rare cir-
cumstances. For most installations, use the
WORK SENSE LEAD KEY to select the - output
terminal for negative voltage reference. Consult
the factory if use of the work sense (21) lead is
desired.
B. Negative Voltage Sensing Polarity:
In some welding applications (such as Inner-
shield
®
) the electrode cable is connected to the -
output terminal and the work cable is connected
to the + output terminal of the power source. This
is the negative voltage sensing polarity, illustrated
by Figure B.11. When the Power Wave and the
wire feeder(s) are connected in this manner, the
arc voltage can be measured in one of four ways.
These four ways are shown in Table B.2.
Table B.2: Negative Voltage Sensing Options
Positive Voltage Reference Negative Voltage Reference
– Output Terminal + Output Terminal
– Output Terminal Work Sense (21) Lead*
Electrode Sense (67) Lead + Output Terminal
Electrode Sense (67) Lead Work Sense (21) Lead*
* Consult the factory before using this option.
OPERATION
B-18 B-18
POWER WAVE 450
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