RJG Lynx LE-R-50-REVB User manual

PRODUCT MANUALPRODUCT MANUAL
Training and Technology for Injection Molding
Lynx™ 50‑Inch Stroke/
Velocity Sensor
LE‑R‑50‑REVB

PRINT DATE
REVISION NO.
08.24.2021
1

Product Manual | Lynx™ 50-Inch Stroke/Velocity Sensor LE-R-50-REVB i
PRODUCT MANUAL
Lynx™ 50‑Inch Stroke/Velocity
Sensor
LE‑R‑50‑REVB
INTRODUCTION
DISCLAIMER III
PRIVACY III
ALERTS III
ABBREVIATIONS III
PRODUCT DESCRIPTION
APPLICATIONS 1
STROKE SCREW POSITION 1
VELOCITY SPEED MEASUREMENT 1
OPERATION 1
DIMENSIONS 2
INSTALLATION
INSTALLATION OVERVIEW 3
INSTALLATION SPECIFICATIONS 3
REQUIREMENTS 3
MOUNTING 4
MOUNTING RETROFIT 5
CONNECTIONS 6
ALTERNATE INSTALLATIONS 7
PREFERRED ALTERNATE INSTALL 7
ALTERNATE INSTALL 7

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MAINTENANCE
CLEANING 9
WARRANTY 9
RJG, INC. STANDARD PRODUCT WARRANTY 9
PRODUCT DISCLAIMER 9
TROUBLESHOOTING
COMMON INSTALLATION ERRORS 11
CUSTOMER SUPPORT 12
RELATED PRODUCTS
COMPATIBLE PRODUCTS 13
LYNX CABLES CELX5 13
EDART PROCESS CONTROLLER 13
COPILOT SYSTEM 13
PRODUCT MANUAL
L™ 50-I S/V
S
LE‑R‑50‑REVB

Product Manual | Lynx™ 50-Inch Stroke/Velocity Sensor LE-R-50-REVB iii
INTRODUCTION
Read, understand, and comply with all
following instructions. This guide must be
kept available for reference at all times.
DISCLAIMER
Inasmuch as RJG, Inc. has no control
over the use to which others may put
this material, it does not guarantee that
the same results as those described
herein will be obtained. Nor does RJG,
Inc. guarantee the effectiveness or safety
of any possible or suggested design
for articles of manufacture as illustrated
herein by any photographs, technical
drawings, and the like. Each user of the
material or design or both should make
his own tests to determine the suitability
of the material or any material for the
design as well as the suitability of the
material, process, and/or design for his
own particular use. Statements concerning
possible or suggested uses of the material
or designs described herein are not to be
construed as constituting a license under
any RJG, Inc. patent covering such use
or as recommendations for use of such
material or designs in the infringement of
any patent.
PRIVACY
Designed and developed by RJG, Inc.
Manual design, format and structure
copyright 2020 RJG, Inc. content
documentation copyright 2020 RJG, Inc. All
rights reserved. Material contained herein
may not be copied by hand, mechanical, or
electronic means, either whole or in part,
without the express written consent of RJG,
Inc. Permission will normally be granted for
use in conjunction with inter‑company use
not in conflict with RJG’s best interests.
ALERTS
The following three alert types are used
as needed to further clarify or highlight
information presented in the manual:
DEFINITIONA definition of a term or terms used
in the text.
NOTESLA note provides additional
information about a discussion
topic.
CAUTIONaA caution is used to make the
operator aware of conditions that
can cause damage to equipment
and/or injury to personnel.
ABBREVIATIONS
DIA diameter
MIN minimum
MAX maximum
R. radius

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Product Manual | Lynx™ 50-Inch Stroke/Velocity Sensor LE-R-50-REVB 1
PRODUCT DESCRIPTION
The Lynx™ 50‑inch stroke/velocity
sensor LE‑R‑50‑REVB is a molding
machine‑mountable, linear position/velocity
sensor designed for use with the RJG, Inc.
eDART® and CoPilot® systems. The stroke/
velocity sensor can be used to monitor
standard screw position and speed on most
injection molding machines.
APPLICATIONS
The eDART and CoPilot systems require
various inputs from the injection molding
machine in order to accurately calculate
significant process values for control; one
of those required inputs is the “screw run”
machine sequence signal. The screw run
signal indicates that the screw is currently
rotating/building the next shot for injection.
A screw run signal may be obtained
directly from the injection molding machine
in some cases. For those machines which
do not provide a screw run signal, a stroke/
velocity sensor must be installed to fulfill
the systems’ requirements.
STROKE (SCREW) POSITION
The eDART and CoPilot system use stroke
(screw) position to calculate shot volume
and cushion.
VELOCITY (SPEED) MEASUREMENT
The eDART and CoPilot systems use
velocity (speed) measurements to calculate
injection velocity and plasticizing rates.
OPERATION
The LE‑R‑50‑REVB is mounted on the
injection unit sled near the back. As the
screw moves forward, the cable is pulled
out until the screw reaches bottom—or
the “zero” position. The sensor will detect
the movement of the screw, but not the
movement of the sled. As the screw moves
backward, the sensor cable is retracted.

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DIMENSIONS

Product Manual | Lynx™ 50-Inch Stroke/Velocity Sensor LE-R-50-REVB 3
INSTALLATION
INSTALLATION OVERVIEW
Read all instructions before installing
hardware and related components. Contact
RJG, Inc. Customer Support for any
questions regarding installation. Follow
all installation instructions, notes, and
cautions.
INSTALLATION SPECIFICATIONS
REQUIREMENTS
Determine a mounting location for the
LE‑R‑50‑REVB; the location must provide
the following:
• fixed position on injection unit sled
• a clear, straight, unobstructed cable path
to and from the LE‑R‑50‑REVB body
NOTESLThe stroke/velocity sensor cable
must enter the cable bushing
straight to eliminate wear on the
cable and prevent erroneous
readings.
CAUTIONaScrew travel must not exceed
50” (1,27 mm). Failure to comply
will result in inaccurate readings,
personal injury, and damage or
destruction of equipment.
The maximum off‑center degree allowable
is 5°, and is measured as a distance using
the following equation:
Distancemax = 0.087 x Cable Length
For example, if the cable is extended 20”
at 5°, then 0.087 x 20” = 1.74”; 1.74” is the
Distancemax, or maximum height of the
cable as measured from the center.

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MOUNTING
Mount the LE‑R‑50‑REVB on the molding
machine injection unit sled using the two
included 10‑24x2” cap screws.

Product Manual | Lynx™ 50-Inch Stroke/Velocity Sensor LE-R-50-REVB 5
MOUNTING (RETROFIT)
Perform the following instructions to mount
the LE‑R‑50‑REVB as a replacement for
the LE‑R‑50‑REVA. Contact RJG to order a
template to create the adapter plate.
Mount adapter plate on the molding
machine injection unit sled using the four
included 8‑32x1/2” screws in place of
the previous LE‑R‑50‑REVA monting plate.
Mount the LE‑R‑50‑REVB on the adapter
plate using the two included 10‑24x2” cap
screws.

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CONNECTIONS
The LE‑R‑50‑REVB is connected to the
eDART or CoPilot system with a single Lynx
cable (CE‑LX5‑4M‑F90) featuring a 90°
female end for ease of installation.
INSTALLATION SPECIFICATIONS (continued)
NOTESLStrain‑relieve the Lynx cable so
that movement of the sled does not
place strain on the LE‑R‑50‑REVB
connector.
1. Fixed Installation
Fix the cable so that the bend radius
is no smaller than five times the cable
diameter—1.25” (31,75mm)—to ensure a
long service life.
2. Flexible Installation
The cable length must be sufficient to
adequately absorb the tensile loads; the
bend radius is no smaller than ten times
the cable diameter—2.5” (63,5mm)—to
ensure a long service life.
R (MIN)=5 x DIA
Fixed installation Flexible installation
R (MIN)=10 x DIA
Install the Lynx cable female end on the
LE‑R‑50‑REVB connector.
Install the Lynx cable male end on the
appropriate junction for the eDART or
CoPilot system connector.
There must not be movement between the
cable plug and the connector, as it may
have a tendency to wear on the connector
insert and cause premature failure.

Product Manual | Lynx™ 50-Inch Stroke/Velocity Sensor LE-R-50-REVB 7
ALTERNATE INSTALLATIONS
In the event that the recommended installation method is not possible, the LE‑R‑50‑REVB
may be installed using either the preferred alternate installation, or if also not possible,
the alternate installation. Do not use either of the following two methods if the
recommended installation method is possible.
PREFERRED ALTERNATE INSTALL
The stroke/velocity sensor is mounted on
the molding machine injection unit sled
near the front (below, top). This method
enables the stroke/velocity sensor to
detect the movement of the screw and
not the movement of the sled. However,
this method subjects the sensor to higher
temperatures due to proximity to the barrel
and heater bands. The LE‑R‑50‑REVB must
be mounted at least 6–8” (152–203mm)
away from barrel heaters.
ALTERNATE INSTALLATION
PREFERRED ALTERNATE INSTALLATION
ALTERNATE INSTALL
The stroke/velocity sensor is mounted to
the injection molding machine near the
back of the injection unit sled (below,
bottom). This method enables the stroke/
velocity sensor to detect the movement
of the screw, but also will detect the
movement of the injection unit sled. Also,
some loss of the usable length of the
sensor’s cable will result.

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Product Manual | Lynx™ 50-Inch Stroke/Velocity Sensor LE-R-50-REVB 9
MAINTENANCE
The LE‑R‑50‑REVB does not require
maintenance; ensure mounting bolts remain
tight to prevent damage or erroneous
readings.
CLEANING
Keep the stroke/velocity sensor’s cable
clean and free from debris to ensure a long
service life.
WARRANTY
RJG, INC. STANDARD PRODUCT
WARRANTY
RJG, Inc. is confident in the quality and
robustness of the LE‑R‑50‑REVB stroke/
velocity sensors, and so are offering a
one‑year warranty. RJG’s stroke/velocity
sensors are guaranteed against defects
in material and workmanship for one year
from the original date of purchase. The
warranty is void if it is determined that the
sensor was subjected to abuse or neglect
beyond normal wear and tear of field use,
or in the event that the sensor has been
opened by the customer.
PRODUCT DISCLAIMER
Inasmuch as RJG, Inc. has no control
over the use to which others may put
this material, it does not guarantee that
the same results as those described
here will be obtained. Nor does RJG, Inc.
guarantee the effectiveness or safety
of any possible or suggested design for
articles of manufacture as illustrated herein
by any photographs, technical drawings,
and the like. Each user of the material or
design or both should make his own tests
to determine the suitability of the material
or any material for the design, as well as
the suitability of the material, process,
and/or design for his own particular
use. Statements concerning possible
or suggested uses of the materials or
designs described herein are not to be
construed as constituting a license under
any RJG, Inc. patent covering such use
or as recommendations for use of such
materials or designs in the infringement of
any patent.
RJG, Inc. is not responsible for the
improper installation of this equipment, or
any other equipment RJG manufactures.
Proper RJG equipment installation does
not interfere with original equipment
safety features of the machine. Safety
mechanisms on all machines should never
be removed.

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Product Manual | Lynx™ 50-Inch Stroke/Velocity Sensor LE-R-50-REVB 11
TROUBLESHOOTING
COMMON INSTALLATION ERRORS
1. Cable Interference
The stroke/velocity sensor is installed
so that there is interference along the
cable path. Cable interference will cause
premature cable wear and erroneous
readings.
Remove sensor, then refer to “Installation
Specifications” on page 3 to re‑install
the sensor correctly.
2. Cable is Angled
The stroke/velocity sensor is installed so
that the cable exit/enters the sensor body
at an angle instead of straight ( 1& 2
below). Sensor operation with the cable
at an angle will cause erroneous readings
and premature wear on the nylon cable
bushing.
Remove the sensor, then refer to
“Installation Specifications” on page 3
to re‑install the sensor correctly.
1
2

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CUSTOMER SUPPORT
Contact RJG’s Customer Support team by phone or email.
RJG, Inc. Customer Support
P: 800.472.0566 (Toll Free)
P: +1.231.933.8170
email: [email protected]
www.rjginc.com/support

Product Manual | Lynx™ 50-Inch Stroke/Velocity Sensor LE-R-50-REVB 13
RELATED PRODUCTS
COMPATIBLE PRODUCTS
LYNX CABLES CE‑LX5
The Lynx sensor cable ( 1at right) is a
polyeurethane‑coated cable suited for the
heat and stress found in injection molding
environments. The cable is available in
lengths from 11.8– 472.4” (0,3– 12 m), and
can be ordered with straight or 90° fittings.
One CE‑LX5 is required to interface the
LE‑R‑50‑REVB with the eDART or CoPilot
system.
1
EDART PROCESS CONTROLLER
The eDART process controller ( 2at right)
is the base hardware unit for the eDART
system. The eDART system is the most
powerful process control system in the
industry, allowing molders to stabilize and
control injection molding processes and
contain bad parts, ensuring high quality
and cost‑reduction.
COPILOT SYSTEM
The CoPilot system ( 3at right) is a
process match assistant that monitors
process values based on a stable template
and provides advice to systematically
restore values to the optimal values when
changes occur. The CoPilot also provides a
process change log that includes detailed
date, time, user, problem, solution, and
notes of each process change.
2
3

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