Lincoln Electric service manual Set the Idealarc DC-655 Power toggle

C-4 C-4

ACCESSORIES

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NOTE: The connection diagram shown in Figure C.1 shows the electrode connected for positive polarity. To change polarity:

a. Set the Idealarc DC-655 POWER toggle

switch to the OFF (0) position.

b. Move the electrode cable to the negative (-)

output terminal. (High inductance or low

FIGURE C.2 – NA-5/-5R WIRE FEEDER CONNECTION TO THE IDEALARC DC-655

14-PIN RECEPTACLE

POWER SOURCE CONTROL CABLE

FOR CONTROL CABLE

WITH 14 PIN MS-TYPE

PLUG CONNECTOR

21	TO NA-5/-5R	OR
	INPUT CABLE PLUG

CONTROL CABLE

FOR CONTROL CABLE

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	inductance, as needed).
c.	Move the work cable to the positive (+) output
	terminal.
d.	If connecting lead #21 to the terminal strip,
	connect it to the +21 terminal (to match work
	polarity). If work polarity changes back to
	negative, lead #21 must be connected to the
	-21 terminal.
e.	Reverse the leads on the back of the ammeter
	and voltmeter in the automatic control box.
f.	If the automatic controls include a variable
	voltage board, connect its jumper lead to pin
	“L”. This will permit the inch down button to
	operate. However, the jumper also disables
	the cold starting/autostop feature of the auto-
	matic controls. Only hot starting will be avail-
	able.
6. Set the DC-655 OUTPUT CONTROL switch to the
“Remote” position and the OUTPUT TERMINALS
switch in the “Remote” position.

CONNECTING THE NA-5/-5R TO THE IDEALARC DC-655 (TERMINAL STRIP)

1.Set the Idealarc DC-655 POWER toggle switch to the OFF (0) position.

2.Disconnect main AC input power to the Idealarc DC-655.

3.Connect the wire feeder control cable leads to the Idealarc DC-655 terminal strip as shown in Figure C.2.

WITH TERMINAL STRIP

LEAD CONNECTORS

+21 - 21 41	4	2	31	32	75	76	77
							C
							B
							A
							32
							31
							2
							4
							GND
NEGATIVE				POSITIVE			21
							BOLT TO CABLES FROM NA-5/-5R
							WIRE CONTACT AS'BLY
							TO WORK

REMOTE VOLTAGE SENSING LEAD

4.Connect the wire feeder control cable ground lead

to the frame terminal marked .

NOTE: The Idealarc DC-655 must be properly grounded.

5.Extend wire feeder control cable lead #21 so it can be connected directly to the work piece.

a.Make a bolted connection using AWG #14 or larger insulated wire. Tape the bolted connec- tion with insulating tape.

b.An S-16586-X remote voltage sensing work lead is available for this purpose.

c.Keep the #21 lead electrically separate from the work cable circuit and connection.

d.Tape the #21 lead to work cable for ease of use.

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IDEALARC DC-655