Lincoln Electric INVERTEC IM526-B, Operator'S Manual

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remote control adapter and K857 remote control
are required for remote output control).
5. Set the meter polarity switch on the rear of the
Invertec to coincide with wire feeder polarity used.
The wire feeder will now display the welding volt-
age.
6. If K480 is not available, see connection diagram
S19404 for modification of K291 or K404 LN-7
input cable with K867 universal adapter plug.
General Instructions for Connection of Wire
Feeders to Invertec
Wire feeders other than LN-7 and LN-25 may be used
provided that the auxiliary power supply capacity of
the Invertec is not exceeded. K867 universal adapter
plug is required. See connection diagram S19406 and
S19386 at the back of this manual for more informa-
tion.
Remote Control of Invertec
Remote control K857, hand amptrol K963 and foot
amptrol K870 require K864 remote control adapter.
See 19309 instruction at the back of this manual for
connection information.
K954-1 MIG PULSER
The MIG Pulser is a hand-held “pendant” type GMAW
Pulsing option for the V300 Power Source. Refer to
the Mig Pulser’s IM manual (IM555) for connection
information.
Parallel Operation
The Invertec’s are operable in parallel in both CC and
CV modes. For best results, the currents of each
machine should be reasonably well shared. As an
example, with two machines set up in parallel for a
400 amp procedure, each machine should be set to
deliver approximately 200 amps, not 300 amps from
one and 100 amps from the other. This will minimize
nuisance shutdown conditions. In general, more than
two machines in parallel will not be effective due to
the voltage requirements of procedures in that power
range.
To set machine outputs, start with output control pots
and arc force/pinch pots in identical positions. If run-
ning in a CC mode, adjust outputs and arc forces to
maintain current sharing while establishing the proper
output current. In CV modes, the pots in identical
positions. Then switch the machine meters to amps
and adjust one of the output control pots for current
balance. Check the voltage and if readjustment is
necessary, repeat the current balancing step. Pinch
settings should also be kept identical on the
machines.
K900-1 DC TIG Starter Connection
This versatile new kit was made to mate with the
Invertec.
A control cable assembly is supplied with the kit to
connect the kit to an Invertec. The cable can be con-
nected, either end, at the DC TIG Starter kit and at
the Invertec by attaching to the 14-pin Amphenols on
the backs of each unit. Refer to diagram S20405 at
the back of this manual.
A negative output cable assembly is also supplied
with the DC TIG Starter kit to connect the kit with the
Invertec’s negative output terminal.
All Magnum™ one and two piece water-cooled torch-
es with 7/8 left-hand threads and gas-cooled torches
with 7/8 and 5/16 right-hand threads can be connect-
ed to the starter kit.
To secure the DC TIG Starter kit to the bottom of the
Invertec and for more detailed instructions, refer to
the K900-1 manual.
MAR97