Miller Electric Welder operating instructions Teach Points Explained, Ipm

10-2. Teach Points Explained

IPM

780

750

700

650

600

550

500

450

400

350

300

250

200

150

100

50

150	180	210	240	270
10	20	30	40	50
30	55	80	105	130
1				2
2.5	5	7.5	10	12.5

Example Of A Synergic

Setting For 425 IPM With

All Teach Points Set At

50 IPM Increments

										Apk
										Abk
										PPS
										PWms
										Vpk
300	330	360	370	420	450	480	510	540	565	Apk
60	70	80	90	100	110	120	130	140	150	Abk
160	185	210	235	260	290	315	340	365	400	PPS
		3				4			5	PWms
15	17.5	20	22.5	25	27.5	30	32.5	35	37.5	Vpk

The teach mode allows the user to create custom pulse MIG welding programs. The teach mode has 15 teach points. At each teach point, the user can adjust five parameters: peak amperage (Apk), back- ground amperage (Abk), pulses per second (PPS), pulse width in milliseconds (PWms), and peak voltage (Vpk) to shape the pulse waveform of the weld output.

Wire feed speed teach points can range from the minimum to the maximum wire feed speed of the feeder. When using a standard speed motor, wire feed speed teach points typically range from 50 to 750 ipm. The feed- er uses pulse parameters at teach points to establish the pulse parameters at any wire feed speed setting.

Below the wire feed speed of the lowest teach point, and above the wire feed speed

of the highest teach point, the unit may limit wire feed speed settings in pulse MIG to maintain all pulse parameters within the capability of the unit.

Pulse MIG programs made by the manufacturer have pulse waveform information entered for all 15 teach points. The operator can relocate and modify the setting of one, or any number of the 15 teach points if the factory set information is not appropriate for a specific application.

After the parameters for each teach point are established, an arc must be struck and main- tained for at least 5 seconds in teach mode. This allows the wire feeder to learn the arc voltage length associated with the taught pulse parameters. To ensure a proper arc length reading, electrode stick-out must be

carefully maintained. An alternate method is to adjust the Vpk value, then turn off Teach Mode and weld. If welding is performed with Teach Mode on, Vpk will be updated for other parameter settings.

The taught arc length represents a Trim (arc length) setting of 50. Increasing the value of Trim, increases the actual arc length. Like- wise, decreasing the value of Trim will decrease actual arc length.

In the Pulse mode, the unit does not maintain a constant arc length with variations in elec- trode stick-out. In the Adaptive Pulse mode, the unit adjusts pulse frequency to maintain a constant arc length regardless of varia- tions in electrode stick-out.

Proceed to next section to teach a pulse MIG program.

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