Nexen PH20 Documento técnico
(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
Copyright 2000 Nexen Group, Inc.
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.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
LensLens
Lens
WebWeb
WebWeb
Web
ReflectorReflector
ReflectorReflector
Reflector
FIGURE 1FIGURE 1
FIGURE 1FIGURE 1
FIGURE 1
FORMNO.L-20141-A-0100 22
22
2
II.II.
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.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
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 tightMake sure lock nut on threaded extension is tight
Make sure lock nut on threaded extension is tight
against "PH20"against "PH20"
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 3FIGURE 3
FIGURE 3
BarBar
BarBar
Bar
AdjustmentAdjustment
AdjustmentAdjustment
Adjustment
Screw LockScrew Lock
Screw LockScrew Lock
Screw Lock
Hex.Hex.
Hex.Hex.
Hex.
AdjustmentAdjustment
AdjustmentAdjustment
Adjustment
ScrewScrew
ScrewScrew
Screw
AdjustmentAdjustment
AdjustmentAdjustment
Adjustment
Screw LockScrew Lock
Screw LockScrew Lock
Screw Lock
Adjustment ScrewAdjustment Screw
Adjustment ScrewAdjustment Screw
Adjustment Screw
Clamping ScrewsClamping Screws
Clamping ScrewsClamping Screws
Clamping Screws
FIGURE 5FIGURE 5
FIGURE 5FIGURE 5
FIGURE 5
Install Support Bar onInstall Support Bar on
Install Support Bar onInstall Support Bar on
Install Support Bar on
either side (rewind).either side (rewind).
either side (rewind).either side (rewind).
either side (rewind).
Support Bar must be partSupport Bar must be part
Support Bar must be partSupport Bar must be part
Support Bar must be part
of Rewind Stand.of Rewind Stand.
of Rewind Stand.of Rewind Stand.
of Rewind Stand.
Install Support Bar onInstall Support Bar on
Install Support Bar onInstall Support Bar on
Install Support Bar on
either side (unwind).either side (unwind).
either side (unwind).either side (unwind).
either side (unwind).
Support Bar must be partSupport Bar must be part
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.of Main Machine Frame.
of Main Machine Frame.
Install Support Bar onInstall Support Bar on
Install Support Bar onInstall Support Bar on
Install Support Bar on
either side (mid-process).either side (mid-process).
either side (mid-process).either side (mid-process).
either side (mid-process).
Last MachineLast Machine
Last MachineLast Machine
Last Machine
RollRoll
RollRoll
Roll
Roll attached toRoll attached to
Roll attached toRoll attached to
Roll attached to
Unwind StandUnwind Stand
Unwind StandUnwind Stand
Unwind Stand
First MachineFirst Machine
First MachineFirst Machine
First Machine
RollRoll
RollRoll
Roll
Guide RollGuide Roll
Guide RollGuide Roll
Guide Roll
MechanismMechanism
MechanismMechanism
Mechanism
Attachment HolesAttachment Holes
Attachment HolesAttachment Holes
Attachment Holes
FIGURE 2FIGURE 2
FIGURE 2FIGURE 2
FIGURE 2
NOTENOTE
NOTENOTE
NOTE
When positioning "PH20", make sure web passesWhen positioning "PH20", make sure web passes
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 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).perpendicular (See Fig. 5).
perpendicular (See Fig. 5).
Angle must beAngle must be
Angle must beAngle must be
Angle must be
55
55
5oo
oo
oor greateror greater
or greateror greater
or greater
FIGURE 4FIGURE 4
FIGURE 4FIGURE 4
FIGURE 4
FIGURE 6FIGURE 6
FIGURE 6FIGURE 6
FIGURE 6
"PH20" Schematic Diagram"PH20" Schematic Diagram
"PH20" Schematic Diagram"PH20" Schematic Diagram
"PH20" Schematic Diagram
Cds
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 7FIGURE 7
FIGURE 7
Screw Guider DimensionsScrew Guider Dimensions
Screw Guider DimensionsScrew Guider Dimensions
Screw Guider Dimensions
45
40
0
+0.2
25
50 70
40 `80
9
100 `120
9
60
KNOB SCREW
KNOB FOR FIX
MTG.ROD
FORMNO.L-20141-A-0100 44
44
4
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.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 8FIGURE 8
FIGURE 8
1. Loosen screws on Lamp Access Cover
(See Fig. 7).
NOTENOTE
NOTENOTE
NOTE
These are captive screws and should not separateThese are captive screws and should not separate
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.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.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.VI.
VI. REPLACEMENT PARTSREPLACEMENT PARTS
REPLACEMENT PARTSREPLACEMENT PARTS
REPLACEMENT PARTS
Item Description Qty. P/N
1 Lamp 1 1858
CaptiveCaptive
CaptiveCaptive
Captive
ScrewsScrews
ScrewsScrews
Screws
Lamp Access CoverLamp Access Cover
Lamp Access CoverLamp Access Cover
Lamp Access Cover
LampLamp
LampLamp
Lamp
AdjustmentAdjustment
AdjustmentAdjustment
Adjustment
Screw CapScrew Cap
Screw CapScrew Cap
Screw Cap
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