Miller Travel Master SB-10D Panduan Pemilik - Halaman 15

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4-3.

SKIP WELDING CONNECTIONS

IMPORTANT: Automatic Weld Controls without a digi-

tal panel are not capable of Skip Welding.

WARNING: ELECTRIC SHOCK can kill.

Do not touch live electrical parts.

Shut down Carriage Control, Automatic Weld

Control, and welding power source, and dis-

connect input power employing lockout/tag-

ging procedures before making internal con-

nections.

Lockout/tagging procedures consist of remov-

ing input plug from receptacle, padlocking line

disconnect switch in open position, removing

fuses from fuse box, or shutting off and red-tag-

ging circuit breaker or other disconnecting de-

vice.

WORN OR CUT CORD can cause serious

personal injury or equipment damage.

Route and secure all cords from welding pow-

er source to Carriage Control and Automatic

Weld Control over top of beam between car-

riage release lever and carriage motor cas-

ing.

Secure cords away from motor pinion gear

and beam gear rack on back of beam.

Secure all cords away from work area.

A. Skip Welding Function

Installing the Skip welding function is an alternative to

the standard installation of this unit. The skip weld func-

tion cannot be used with the Adjustable Start Delay or

RP-10D Pendant option. When the Sidebeam Carriage

Control is modified to accommodate the skip weld func-

tion, the front panel START and STOP buttons are dis-

abled, and, if applicable, the optional Limit Switches are

disabled.

After the skip welding installation is complete, closing a

triple-pole, single-throw switch will start the weld cycle.

The preflow and postflow times determine the length of

time that weld output is NOT present, thereby determin-

ing the skip time. During the skip portion of the welding

cycle (preflow and postflow periods), the carriage trav-

els in the direction selected by the Sidebeam Carriage

Control TRAVEL DIRECTION switch, and it travels at

the speed set by the JOG SPEED control. Upon arc initi-

ation, the carriage travels in the direction selected by the

Carriage Control TRAVEL DIRECTION switch, and it

travels at the speed set on the TRAVEL SPEED control.

The unit will weld for the length of time set on the Auto-

matic Weld Control SPOT TIME control. The unit auto-

matically restarts the weld cycle as long as the triple-

pole, single-throw switch is closed and the SPOT/CON-

TINUOUS switch on the Automatic Weld Control is in

the SPOT position. When the switch is opened, the weld

cycle is stopped.

B. Required Equipment

The following cords must be obtained by the customer

for skip weld connections:

A cord of proper type and length to make connec-

tions in the Automatic Weld Control. The cord

should be a five-conductor cord connected to a

triple-pole, single-throw switch. One conductor of

the cord should tie together two switch commons

of the triple-pole, single-throw switch.

A four-conductor cord of proper type and length

to make connections from the Automatic Weld

Control to the Sidebeam Carriage Control.

C. Preparation For Skip Welding

WARNING: Read and follow safety informa-

tion at beginning of entire Section 4-3 before

proceeding.

If unit has not been previously installed for standard op-

eration, disregard this section and proceed to Section D.

If unit was previously installed for standard operation

and the skip function is desired, proceed as follows:

Disconnect Automatic Weld Control cord from

appropriate terminals on terminal strip 1T and re-

ceptacle RC4 according to the following table:

Disconnect Cord At These

Automatic Weld

Terminal Strip

Control Model

H and K

1DA

F and H

1DA-PS

G and J

Disconnect Sidebeam Carriage Control cord

from terminals A and B on 2T, and leads from

cord to terminals D and L on terminal strip 1T.

Reinstall Carriage Control jumper links between

terminals C and D and terminals K and L on termi-

nal strip 1T, and proceed to Section D.

D. Connections To Automatic Weld Control (Table

4-2 And Figure 4-1)

WARNING: Read and follow safety informa-

tion at beginning of entire Section 4-3 before

proceeding.

Obtain both a five-conductor and a four-conduc-

tor cord as instructed Section 4-3B.

Loosen screw from door on upper panel of the

weld control, and open door.

Loosen strain relief on right side of weld control,

and route end of five-conductor cord not con-

nected to switch through clamp to terminal strips

1T and 2T.

Use Table 4-2 to remove jumper link from weld

control terminal strip 1T.

Terminal Locations

Receptacle RC4

F and H

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