Nexen Ph20 Technical Document

(i)

FORMNO.L-20141-A-0100

"PH20"

TRANSPARENT EDGE GUIDE SENSOR

INSTALLATION, OPERATION AND MAINTENANCE GUIDE

(ii)

In accordance with Nexen’s established policy of constant product improvement, the specifications contained in this

manualaresubjecttochangewithoutnotice. Technicaldatalistedinthismanualarebasedonthelatestinformation

available at the time of printing and are also subject to change without notice.

Technical Support: 800-843-7445

(651)484-5900

www.nexengroup.com

NexenGroup,Inc.

560 Oak Grove Parkway

Vadnais Heights, Minnesota 55127

ISO 9001 Certified

(iii)

Read this manual carefully before installation and operation.

Follow Nexen's instructions and integrate this unit into your system with care.

This unit should be installed, operated and maintained by qualified personnel ONLY.

Improper installation can damage your system.

Comply with all applicable codes.

CAUTION

(iv)

(v)

Table of Contents

INTRODUCTION -------------------------------------------------------------------------------------------------------------- 1

INSTALLATION ----------------------------------------------------------------------------------------------------------------- 2

SCREW GUIDER DIMENSIONS ----------------------------------------------------------------------------------------- 3

ELECTRICAL CONNECTIONS ------------------------------------------------------------------------------------------- 2

MAINTENANCE---------------------------------------------------------------------------------------------------------------- 3

SPECIFICATIONS------------------------------------------------------------------------------------------------------------- 3

REPLACEMENT PARTS ---------------------------------------------------------------------------------------------------- 3

WARRANTY--------------------------------------------------------------------------------------------------------------------- 4

(vi)

-NOTES-

1FORMNO.L-20141-A-0100

I.I.

I. INTRODUCTIONINTRODUCTION

INTRODUCTIONINTRODUCTION

INTRODUCTION

The Horton "PH20" Is a photo sensitive edge guide sensor, designed primarily for use with transparent web materials. "PH20"

may also be used with opaque materials, and requires no changes or adjustment when converting from transparent to opaque

webs.

"PH20" generates a light beam using an incandescent lamp which is focused by a lens (See Fig. 1).

This light beam passes through the web and bounces off a reflector to a Cds light receiving element. The Cds cell converts

the light energy it receives into a voltage output to the web guide amplifier. Voltage generated varies in direct proportion to

the amount of light received by the Cds cell. Even the most transparent web has a certain amount of refraction, therefore the

position of the web within the sensor light beam will affect the amount of light reaching the Cds cell.

LensLens

Lens

WebWeb

Web

ReflectorReflector

Reflector

FIGURE 1FIGURE 1

FIGURE 1

FORMNO.L-20141-A-0100 22

II.II.

II. INSTALLATIONINSTALLATION

INSTALLATIONINSTALLATION

INSTALLATION

A. Secure "PH20" to threaded extension of adjustment

screw of Mounting Bracket (See Figs. 2 & 3).

B. Secure Mounting Bracket to customer supplied

sensor mounting bar (1 in. [25 mm] square ) mounted

across web (See Fig. 4).

II.II.

II. ELECTRICAL CONNECTIONSELECTRICAL CONNECTIONS

ELECTRICAL CONNECTIONSELECTRICAL CONNECTIONS

ELECTRICAL CONNECTIONS

A. "PH20" comes with a 16 ft. [5 m], 4 conductor,

shielde d cable. Connect wiring to W e b Guide Amplifier according to instructions provided with

Amplifier (See Fig. 6 for color coding and

significance of wires).

NOTENOTE

NOTE

Make sure lock nut on threaded extension is tightMake sure lock nut on threaded extension is tight

Make sure lock nut on threaded extension is tight

against "PH20"against "PH20"

against "PH20"

C. Make sure Sensor is securely mounted on Mounting

Bracket, and Mounting Bracket is securely mounted

to machine . Looseness in these mountings will

cause Sensor movement and prevent accurate

edge guiding.

FIGURE 3FIGURE 3

FIGURE 3

BarBar

Bar

AdjustmentAdjustment

Adjustment

Screw LockScrew Lock

Screw Lock

Hex.Hex.

Hex.

AdjustmentAdjustment

Adjustment

ScrewScrew

Screw

AdjustmentAdjustment

Adjustment

Screw LockScrew Lock

Screw Lock

Adjustment ScrewAdjustment Screw

Adjustment Screw

Clamping ScrewsClamping Screws

Clamping Screws

FIGURE 5FIGURE 5

FIGURE 5

Install Support Bar onInstall Support Bar on

Install Support Bar on

either side (rewind).either side (rewind).

either side (rewind).

Support Bar must be partSupport Bar must be part

Support Bar must be part

of Rewind Stand.of Rewind Stand.

of Rewind Stand.

Install Support Bar onInstall Support Bar on

Install Support Bar on

either side (unwind).either side (unwind).

either side (unwind).

Support Bar must be partSupport Bar must be part

Support Bar must be part

of Main Machine Frame.of Main Machine Frame.

of Main Machine Frame.

Install Support Bar onInstall Support Bar on

Install Support Bar on

either side (mid-process).either side (mid-process).

either side (mid-process).

Last MachineLast Machine

Last Machine

RollRoll

Roll

Roll attached toRoll attached to

Roll attached to

Unwind StandUnwind Stand

Unwind Stand

First MachineFirst Machine

First Machine

RollRoll

Roll

Guide RollGuide Roll

Guide Roll

MechanismMechanism

Mechanism

Attachment HolesAttachment Holes

Attachment Holes

FIGURE 2FIGURE 2

FIGURE 2

NOTENOTE

NOTE

When positioning "PH20", make sure web passesWhen positioning "PH20", make sure web passes

When positioning "PH20", make sure web passes

through light beam at an angle of 5 to 45 degrees fromthrough light beam at an angle of 5 to 45 degrees from

through light beam at an angle of 5 to 45 degrees from

perpendicular (See Fig. 5).perpendicular (See Fig. 5).

perpendicular (See Fig. 5).

Angle must beAngle must be

Angle must be

5oo

oor greateror greater

or greateror greater

or greater

FIGURE 4FIGURE 4

FIGURE 4

FIGURE 6FIGURE 6

FIGURE 6

"PH20" Schematic Diagram"PH20" Schematic Diagram

"PH20" Schematic Diagram

Cds

Halfmirror

Lamp

8 Black

3 White

7 Red

1 Green

2 Brown

4 Shield

Reflector

3FORMNO.L-20141-A-0100

FIGURE 7FIGURE 7

FIGURE 7

Screw Guider DimensionsScrew Guider Dimensions

Screw Guider Dimensions

+0.2

50 70

40 `80

100 `120

KNOB SCREW

KNOB FOR FIX

MTG.ROD

FORMNO.L-20141-A-0100 44

In accordance with Horton’s established policy of constant product improvement, the specifications contained in this manual are subject to

change without notice. Technical data listed in this manual are based on the latest information available at the time of printing and are also

subject to change without notice.

IV.IV.

IV. MAINTENANCEMAINTENANCE

MAINTENANCEMAINTENANCE

MAINTENANCE

A. Measurement accuracy is affected by foreign

material on "PH20" lens of reflector. Periodically

clean these surfaces with a soft, clean, dry cloth.

B. Incandescent lamps deteriorate during their service

life. If it becomes impossible to achieve electrical

balance with Balance Control Pot on Web Guide

Amplifier, proceed as follows:

1. Set Balance Pot to its mid-travel position.

2. Insert web into Sensor light path until light

spot on web is a half-circle (this centers

web in Sensor).

3. Remove Adjustment Screw Cap (See Fig.

7).

4. Using a small screw driver, adjust light

intensity with the variable resistor exposed

in Step 3 until web position indicator on

W e b Guide Amplifier is in its middle or

balanced position.

5. Reinstall Adjustment Screw Cap.

C. Lamp life is approximately six months, based on an

eight hour per day usage. To replace lamp:

FIGURE 8FIGURE 8

FIGURE 8

1. Loosen screws on Lamp Access Cover

(See Fig. 7).

NOTENOTE

NOTE

These are captive screws and should not separateThese are captive screws and should not separate

These are captive screws and should not separate

from cover.from cover.

from cover.

2. Remove burnt out lamp.

3. Install new lamp.

4. Replace cover and tighten screws.

5. Adjust light intensity (See Section IV,

Para. B).

V.V.

V. SPECIFICATIONSSPECIFICATIONS

SPECIFICATIONSSPECIFICATIONS

SPECIFICATIONS

Light path length . . 1.15 in. [32 mm], lens to reflector

Power supply . . . . . . . . . . . . . . 4.5 VDC

Lamp type . . . . . . . . . . . Incandescent

Wave length . . . . . . . . . . Visual spectrum

Receiver element . . . . . . . . . . . . . Cds cell

Measurement range ± .12 in. [3 mm] from light path center

Measurement accuracy . . . . . . .004 in. [0.1 mm]

Weight . . . . . . . . . . . .2 lbs. [0.9 kg.]

Ambient temperature . . . . . 32 o~122 Fo[0 ~50 oC]

Housing . . . . . . . . . . Aluminum die casting

VI.VI.

VI. REPLACEMENT PARTSREPLACEMENT PARTS

REPLACEMENT PARTSREPLACEMENT PARTS

REPLACEMENT PARTS

Item Description Qty. P/N

1 Lamp 1 1858

CaptiveCaptive

Captive

ScrewsScrews

Screws

Lamp Access CoverLamp Access Cover

Lamp Access Cover

LampLamp

Lamp

AdjustmentAdjustment

Adjustment

Screw CapScrew Cap

Screw Cap

5FORMNO.L-20141-A-0100

WARRANTY

Nexen Group, Inc. (Nexen) warrants its product(s) [the Product(s)] will be free from defects in materials and workmanship under normal use and service

conditionsforaperiod of 12monthsfromthedateofshipment. NO OTHERWARRANTIES,WHETHEREXPRESS,IMPLIED,ORSTATUTORY, INCLUDING

WITHOUTLIMITATIONWARRANTIESOFMERCHANTABILITY,OROFFITNESSFORAPARTICULARPURPOSE,AREGIVEN,ANDALLSUCHOTHER

WARRANTIESAREHEREBYEXPRESSLYDISCLAIMED.

Conditions

This warranty applies only if: (a) the Product has been installed, used, and maintained in accordance with any applicable Nexen installation or maintenance

manual for the Product; (b) the alleged defect is not attributable to normal wear and tear; (c) the Product has not been altered, misused, or used for

purposes other than those for which it was intended; and (d) the claimant has complied with the warranty claim procedures set out below in Warranty Claim

Procedures.

ExclusiveRemedy

"The sole and exclusive remedy for a breach of this warrant shall be, at Nexen’s sole election, repair or replacement with new, serviceably used or

reconditioned Product, or issuance of a credit in the amount of the current Nexen discounted price for the Product."

LimitationofDamages

In no event shall Nexen be liable for any consequential, indirect, incidental, or special damages of any nature whatsoever, including without limitation, lost

profits arising from the sale or use of the Products.

WarrantyClaimProcedures

To make a claim under this warranty, the claimant must give written notice of the alleged defect to Nexen and deliver the Product to Nexen within one year

of the date on which the alleged defect first became apparent.

NexenGroup,Inc.

560OakGroveParkway

VadnaisHeights,MN55127

800-843-7445

InMN:(651)484-5900

Fax:(651)286-1099

www.nexengroup.com

ISO9001Certified

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