Hobart Welding Products TM-944C Control Board PC1 Test Point Values 115 VAC Model, Circuit common

6-5. Control Board PC1 Test Point Values (115 VAC Model)

				a)	Tolerance − ±10% unless
			PC1 Voltage Readings		specified
				b)	Reference − to circuit common
					unless noted
			Voltage Readings:
a) Tolerance −	±10% unless specified			b) Reference − as noted
Receptacle		Pin	Value
RC1		1	24 volts ac input, reference to pin RC1-2
		2	24 volts ac input, reference to pin RC1-1
		3,4	35 volts dc with transformer thermostat closed, reference to pin TP-C
		5	35 volts dc with gun trigger closed, reference to TP-C
		6	35 volts dc, reference to TP-C
		7	15.0 volts dc, reference to TP-C
		8	15.0 to 6.5 volts dc from min to max of Wire Feed speed control R1, Reference for TP-C
RC2		1	Negative (−) welder output voltage
		2	Not used
		3	Positive (+) output to wire drive motor
		4	Negative (−) output to wire drive motor
RC4		−−	Circuit common
RC5		−−	Positive (+) welder output voltage with gun trigger closed
TP		A	35 volts dc, reference to TP-C
TP		B	15 volts dc, reference to TP-C
TP		C	Circuit common
TP		D	30 volts dc, reference to TP-C
TP		E	15 volts dc with Wire Speed control R1 at minimum, reference to TP-C
TP		F	11 volts dc with Wire Speed control R1 at maximum, reference to TP-C

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