ACU-RITE ENC 250 참조 매뉴얼 - 페이지 10

{카테고리_이름} ACU-RITE ENC 250에 대한 참조 매뉴얼을 온라인으로 검색하거나 PDF를 다운로드하세요. ACU-RITE ENC 250 13 페이지. Linear encoder reading head
ACU-RITE ENC 250에 대해서도 마찬가지입니다: 교체 지침 (2 페이지)

페이지 인쇄

ENC 250

™

MULTI-SECTION

Installing the reading head

The reading head must be mounted in the same location as

it is held by the alignment brackets. To attach the reading

head to the mounting surface, follow these steps:

• Custom designed brackets by the installer should be solid,

and rigidly assembled. Attach brackets to the machine

with [1/4-20] M6 fasteners minimum. Allow clearance for

removing alignment brackets once the reading head has

been installed. Also, allow a small amount of clearance

between the reading head and its mounting surface for

setting the leveling screws. For custom brackets, transfer

punch the two head mounting holes on the bracket and tap

these holes for [8-32 x 1/2"] M4 x 12mm deep minimum.

To mount the reading head proceed as follows:

• Insert, but do not tighten the [8-32] M4 reading head

screws.

• Place a [.001 - .003"] .025 - .076mm shim between the

leveling set screws and mounting bracket.

• Adjust each screw until a slight drag is felt on the shim.

• Evenly tighten the [8-32] M4 reading head mounting

screws so that the head does not shift or twist. Remove

the alignment brackets as done previously.

• Verify the reading head is able to move through the entire

length of machine travel without interference.

Completing the

installation

M3 x 12 CHMS

• Remove the Reading Head shipping tool from the end of

the scale case. Attach the left end cap with M3 x 12 CHM

screws provided in the hardware kit. Tighten these screws

securely to compress the end cap gasket.

• Move the axis so that the reading head is at the tape

tensioning position indicated by the tension label on the

right side of the scale.

• Set the readout's display and encoder resolution to .005

mm. See readout reference manual for setting resolution.

• Remove tensioning hole plug from the right end cap.

• Insert the M4 thumbscrew from the hardware kit through

the washer and polyurethane compression spring into the

tensioning hole. Turn the thumbscrew until it engages the

scale tensioner inside the scale case.

M5 SHSS

• Turn the thumbscrew clockwise to tension the tape until

the display has changed approximately .050mm.

Carefully back off the thumbscrew until the display stops

changing. Reset the display to zero.

• Repeat this procedure two to three times to put the tape

in a relaxed, slack-free position.

• Slowly tighten the thumbscrew until the display reaches

the tensioning value shown on the scale label.

• Tighten the M5 SHSS on the right side of the case to

30 in-lb. [3.4Nm]

• THE M5 SHSS MUST BE TIGHTENED SECURELY

AFTER TENSIONING TO PREVENT TAPE

SLIPPAGE.

• Unscrew and remove the knurled tensioning screw

assembly from the scale case.

Polyurethane

compression spring

Flat washer

Thumbscrew

Tensioning hole

Thumbscrew

Acu-Rite Companies Inc.