Lincoln Electric IM526-B manual Remote Control of Invertec, Parallel Operation

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.

– 9 – MAR97