Miller Electric TM-353E See -1 for, HD1 location, V24, D, E, V22, V21, V20 See Section See also

Test Equipment Needed:

				Voltage Readings
			a)	Tolerance	– ± 10%	unless
				specified
			b) Reference – to circuit
				common	(lead 42)	unless
See Figure 10-1 for	No calibration available			noted
HD1 location	for voltmeter V1		c)	Wiring Diagram		– see
				Section 10
			V1		230 volts ac
			V2		77 volts ac
			V3		82.5 volts ac
		R1	V4		57 volts ac
			V5, V6		115 volts ac
V24			V7		24 volts ac
			V8, V9		18 volts ac
			V10		10 volts ac
			V11		80 volts dc
	R1	V23, B,	V12. V13, V14		115 volts ac
		C, D, E	V15, V16, V17		24 volts ac
		See Section 6-3	V18		115 volts ac with S2
		for waveforms
					in Start or Con-
V25		B, C, D, E
	R3				tinuous
V22			V19		0 to +10 volts dc
V21					with contactor on
	R2		V20, V21		24 volts dc
			V22		0-80 volts dc (rec-
					tified arc voltage)
			V23		maximum 80 volts
					ac/dc
			V24		24 volts dc
A A			V25		16.5 millivolts dc
					per 1 ampere of
A					weld output
A		CR1 energizes
		when open-circuit voltage
		is present; denergizes
		when an
		arc is struck
V20

		See Section 6-3	See also			Resistance Values
			Sections 6-4 and 6-5
		for waveform A
					Tolerance – ± 10% unless specified
			for PC1 data	a)
V18	V19	CR5 energizes when		b)	Turn Off unit and disconnect input
			contactor is on		power before checking resistance
See Section 6-8
				R1		All values for T1, Z1, and T3 are less
for ammeter A1
						than 1 ohm
calibration
				R2		5.3 ohms
				R3		6.1 K ohms
						SC-188 161
Syncrowave 250						TM-353 Page 27