Miller Electric D-75S Pin Plug Information, Gun Recommendation Table, Installing Drive Rolls

5-4. 14-Pin Plug Information

			Pin*	Pin Information
			A	24 volts ac with respect to socket G.
I J	K	A	B	Contact closure to A completes 24 volts ac contactor control circuit.
			G	Circuit common for 24 volts ac circuit.
		B
H	N	L C	C	+10 volts dc input from power source to wire feeder with respect to socket D.
G	M	D	D	Remote control circuit common.
F	E
			E	0 to +10 volts dc output signal from wire feeder to power source with respect to socket D.
			H	Voltage feedback; 0 to +10 volts dc, 1 volt per 10 arc volts.
			F	Current feedback; 0 to +10 volts dc, 1 volt per 100 amperes.

*The remaining pins are not used.

5-5. Gun Recommendation Table

Process	Gun
GMAW − Hard or Cored Wires	Q-Series Guns: 300, 400, 500,
	And 600 Amp.
FCAW − Self-Shielding Wires	FC-1260 Or FC-1150

5-6. Wire Type, Size, And Feed Speed Capability Table

Motor Speed	Wire Type	Wire Size	Feed Speed Capability
Standard	All	.023 To 5/64 in (0.6 To 2 mm)	50 To 1400 ipm (1.3 To 35.6 mpm)
Low	All	.023 To 1/8 in (0.6 To 3.2 mm)	20 To 400 ipm (0.5 To 10.1 mpm)

5-7. Installing Drive Rolls

4

3

2

1

1Pressure Door Assembly

2Drive Roll

3Ejector Button

4Drive Roll Carrier

Installation

Open pressure door assembly. Lift drive roll swing arm.

Align drive roll slots with three lobes on drive roll carrier.

Insert drive roll onto carrier. Drive roll will snap into place.

When closing swing arm, push firm- ly into position.

Swing arm has built in resistance to prevent swing arm from closing abruptly.

.When using cored welding wire use knurled drive rolls.

Removal

.Remove PD wire guide before removing lower drive rolls.

Lift up drive roll swing arm and press ejector button in middle of drive roll carrier.

804 187-B

OM-228 322 Page 14