Miller Electric S-74DX Manuel du propriétaire télécharger pdf (Page 25)

OM-1500-9 Page 21

6-8. Adjust Control

1 Adjust Control

The Adjust control is used to

change various sequence parame-

ters, and to select various se-

quences. Refer to the section for

the function in question for informa-

tion related to using the Adjust con-

trol.

1

6-9. Sequence Push Button

1 Sequence Push Button

2 Sequence Push Button LED

3 Welding Sequence LEDs

. For more information on Setting

Sequence Parameters see Section 7-1.

• The Sequence push button allows the

selection of welding sequences. Five weld-

ing sequences are available. The default

sequence is the Weld sequence. The Weld

sequence is active on power up. Three

welding sequence LEDs are located above

the Sequence push button: Start, Crater,

and Preflow/Postflow. The applicable LED

illuminates to indicate which welding se-

quence is active.

• The LED illuminates to indicate that a weld-

ing sequence display mode other than Weld

is activate. Welding sequences other than

Weld must be set prior to initiating the arc.

When the unit enters a welding state, all se-

quence display modes are terminated and

the weld display mode is activated.

If zero time is programmed for a timed se-

quence except for Weld, that sequence will

be skipped.

• In the weld sequence display mode the Se-

quence push button LED is Off. When the

Sequence push button is pressed, the Se-

quence push button flashes and the Start

LEDs flash. In this condition, the unit is in the

Start sequence display mode, and Start se-

quence parameters are shown in the dis-

plays.

• When the Sequence push button is pressed

a second time, the Crater sequence LED

flashes. The Sequence push button LED re-

mains flashing. In this condition, the unit is

in the Crater sequence display mode, and

Crater sequence parameters are shown in

the displays.

• When the Sequence push button is pressed

a third time, the Preflow/Postflow sequence

LED flashes. The Sequence push button

LED remains flashing. In the Preflow display

mode the upper display shows the preflow

time and the lower display indicates the ab-

breviation PRE, to inform the operator that

preflow time is displayed. If the upper dis-

play push button is pressed, the Adjust con-

trol can be used to adjust preflow.

If the lower display push button is pressed, the

Adjust control can be used to select between

preflow PRE and postflow POST. When

POST is selected, the upper display can be

used to specify postflow time.

• When the Sequence push button is pressed

a fourth time, the unit returns to the welding

sequence display mode.

Welding Sequence Diagram

Preflow

Time

Start

Time

Weld

Time

Crater

Time

Postflow

Time

1

2

3

1 2 ... 20 21 22 23 24 25 26 27 28 29 30 ... 43 44

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