Lincoln Electric IM924 POWER WAVE 455M_STT - Manual (Page 15)

A-5 INSTALLATION
POWER WAVE 455M/STT (CE)
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.
Important: 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 455M/STT (CE) 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 exten-
sion. The output receptacle on the Power Wave
455M/STT (CE) is located beneath the spring loaded out-
put cover at the bottom of the case front. The input recep-
tacle 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.
SYSTEM DESCRIPTION
The Power Wave 455M/STT (CE) and Power Feed M
family of products utilize a digital communication system
called ArcLink. Simply put, ArcLink allows large amounts
of information to be passed at very high speeds between
components (nodes) in the system. The system requires
only two wires for communication, and because of its bus-
like structure, the components may be connected to the
network in any order, thus simplifying the system set-up.
Each "system" must contain only one power source.
The number of wire feeders is determined by the type
of wire feeder. Refer to the wire feeder instruction man-
ual for details
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
GMAW Voltage sense at studs Voltage sense at studs
SAW 67 lead required 21 lead optional
CAC 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 455M/STT
(CE) 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:
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.
O N
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456
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CAUTION