Hobart Welding Products TM-944C manual 510, 600, 700

Voltage Readings

a)Tolerance − ±10 % unless specified

b)Wiring Diagram − see Section 8

V1	230 volts ac with power cord plugged in
V2	230 volts ac with Power switch S1 On
V3	24 volts ac with Power switch S1 On
V4	30 volts dc with Power switch S1 On
V5	27 volts dc with gun trigger pressed
V6	230 volts ac with gun trigger pressed
V7	230 volts ac with gun trigger pressed
V8,	13.9 volts ac with Voltage switch S2
V9	in position 1
	16.5 volts ac with Voltage switch S2
	in position 2
	19.1 volts ac with Voltage switch S2
	in position 3
	21.7 volts ac with Voltage switch S2
	in position 4
V10	18.9 volts dc with Voltage switch S2
	in position 1
	22.6 volts dc with Voltage switch S2
	in position 2
	25.1 volts dc with Voltage switch S2
	in position 3
	29.8 volts dc with Voltage switch S2
	in position 4
V11	7.0 to 17.5 volts dc from min. to max. of
	Wire Speed control R1 with
	Voltage switch S2 in position 1
	10.0 to 20.5 volts dc from min. to max. of
	Wire Speed control R1 with
	Voltage switch S2 in position 2
	12.7 to 24.0 volts dc from min. to max. of
	Wire Speed control R1 with
	Voltage switch S2 in position 3
	15.5 to 27.0 volts dc from min. to max. of
	Wire Speed control R1 with
	Voltage switch S2 in position 4

		Resistance Values
a)	Tolerance − ±10% unless specified
b)	Turn Off unit and disconnect input
	power before checking resistance
R1-R6		All values for T1 are less than 1 ohm
R7		Less than 1 ohm at minimum position of
		Wire Speed control R1; 55k ohms at
		maximum position of Wire Speed control R1
R8		Less than 1 ohm
R9		Less than 2 ohms with wire feed motor
		disconnected from circuit

Wire Speed And Drive Motor RPM Feeding Wire*

	Voltage
Wire Diameter	Switch S2	Min.	Max.	Min.	Max.
And Type	Position	RPM	RPM	IPM	IPM
.030/.035 Solid	1	40	135	150	510
or Flux Core	2	50	160	190	600
	3	70	190	260	700
	4	90	205	340	800

*All tests done with .030-.035 liner in H-10 model 10 foot welding gun, smooth groove drive roll.

Values are nominal depending on drive roll pressure and spool hub tension.

Drive Motor RPM At No Load*

Voltage	Min.	Max.
Switch S2
Position	RPM	RPM
1	80	150
2	110	175
3	135	200
4	160	235

*All tests done with the pressure assembly open, not feeding wire. Values are nominal.

194 325-A

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