Lincoln Electric SVM172-A service manual Electrode Routing, Available Cable Assemblies, AA-3

AA-3 INSTALLATION AA-3

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SAFETY PRECAUTION

ELECTRIC SHOCK can kill.

•Only qualified personnel should per- form this installation.

•Turn off the input power to the power source at the disconnect switch or fuse box before working on this equip- ment. Turn off the input power to any other equipment connected to the welding system at the disconnect switch or fuse box before working on this equipment.

•Do not touch electrically hot parts.

•Always connect the Power Wave grounding lug (located inside the reconnect input access door) to a proper safety (Earth) ground.

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ELECTRODE ROUTING

The electrode supply may be either from reels, Readi- Reels, spools, or bulk packaged drums or reels. Observe the following precautions:

a)The electrode must be routed to the wire drive unit so that the bends in the wire are at a minimum, and also that the force required to pull the wire from the reel into the wire drive unit is kept at a minimum.

b)The electrode is “hot” when the gun trigger is pressed and must be insulated from the boom and structure.

c)If more than one wire feed unit shares the same boom and are not sharing the some power source output stud, their wire and reels must be insulated from each other as well as insulated from their mounting structure.

CONTROL CABLE

CONTROL CABLE CONNECTIONS

•All system control cables are the same.

•All control cables can be connected end to end to extend their length.

•All system equipment must be connected to a control cable.

NOTE: The maximum cable length between Power Source and Wire Feeder is 100'(30.5m).

Typical Bench Feeder Connection:

Control cable is connected from the Power Wave 455 output receptacle to the input receptacle on the back of the Wire Drive.

CONTROL CABLE SPECIFICATIONS

It is recommended that only genuine Lincoln control cables be used at all times. Lincoln cables are specifi- cally designed for the communication and power needs of the Power Wave 455 / Power Feed system. The use of non-standard cables, especially in lengths greater than 25 feet(7.6m), can lead to communication problems (system shutdowns), poor motor accelera- tion (poor arc starting) and low wire driving force (wire feeding problems).

Lincoln control cables are copper 5 conductor cable in a SO-type rubber jacket. There is one 20 gauge twist- ed pair for network communications. This pair has an impedance of approximately 120 ohms and a propaga- tion delay per foot of less than 2.1 nanoseconds. There are two 12 gauge conductors that are used to supply the 40 VDC to the network. The fifth wire is 18 gauge and is used as an electrode sense lead.

AVAILABLE CABLE ASSEMBLIES

K1543 Control cable only. Available in lengths of 8'(2.4m), 16'(4.9m), 25'(7.6m), 50'(15.2m) and 100'(30.5m).

POWER FEED 10M SINGLE/DUAL