Maxcess MAGPOWR GTS Load Cell User manual

MAGPOWR GTS Load Cell
User Manual
EN
MI 850A347 1 A
MAGPOWR TENSION CONTROL

CONTENTS
www.maxcessintl.com
MAGPOWR GTS Load Cell
MI 850A347 1 A
INTRODUCTION 1-1
About these operating instructions ...................................................................... 1-1
CE marking .......................................................................................................... 1-1
PRODUCT OVERVIEW 2-2
Theory of operation ............................................................................................. 2-2
Model number key ............................................................................................... 2-2
Available models .................................................................................................. 2-3
Selection and sizing ............................................................................................. 2-4
SAFETY INSTRUCTIONS 3-1
Instructions for use .............................................................................................. 3-1
Symbols used ....................................................................................................... 3-2
Proper use............................................................................................................ 3-3
Installation and commissioning............................................................................ 3-3
Maintenance and repair........................................................................................ 3-3
Decommissioning................................................................................................. 3-3
INSTALLATION 4-1
Mechanical and electrical installation ................................................................... 4-1
Top plate adapters ............................................................................................... 4-3
Top plate adapter kits .......................................................................................... 4-3
Adapter kit installation ............................................................................... 4-4
SPECIFICATIONS 5-1
SERVICE AND PARTS 6-1

1-1
INTRODUCTION
www.maxcessintl.com
MAGPOWR GTS Load Cell
MI 850A347 1 A
About these
operating
instructions
All of the information herein is the exclusive proprietary
property of Maxcess International and is disclosed with the
understanding that it will be retained in confidence and will
neither be duplicated nor copied in whole or in part nor be
used for any purpose other than for which disclosed.
Copyright 2011, all rights reserved.
Periodically there will be updates to this manual. The latest
version is available on our website or by calling your regional
office listed on the back page of this publication.
These load cell devices must not be installed or used in a
machine or system which does not comply with the machinery
directive 2006/42/EC.
These load cell devices were designed and manufactured to be
installed as Partly Completed Machinery into a machine or
partly completed machine.
The instructions must be read and used by all persons who
have the responsibility of installing and maintaining these load
cell devices.
These instructions must be retained and incorporated in the
technical documentation for the machine or partly completed
machinery into which the load cell device is installed.
CE marking
Only the 2006/42/EC Machinery directive applies to these
devices and they are not marked with the CE sign.
Electromagnetic Compatibility (EMC)
The load cell device is inherently benign in terms of
electromagnetic compatibility and the EMC directive has not
been applied. The electromagnetic compatibility of the load
cell device can only be assessed in connection with the entire
electrical installation including the control. The machine
builder who installs this partly completed machinery into a
machine is responsible for compliance with the EMC directive.

2-2
PRODUCT OVERVIEW
www.maxcessintl.com
MAGPOWR GTS Load Cell
MI 850A347 1 A
Product overview
The model GTS load cell is designed to be mounted under
standard inch and metric pillow block bearings. All GTS load
cells are pre-drilled and tapped to accept metric pillow block
bearings.
Top Plate Adapter kits are also available to accommodate
special mounting requirements for the metric series of GTS load
cells. GTS load cells are compatible with all MAGPOWR tension
readouts and controls.
Theory of
operation
The load cell construction consists of a beam with a metal foil
strain gage bonded at the bending point of the beam. The
spring constant of the beam causes the beam to deflect with the
applied force. The beam deflection causes the strain in the
metal below the strain gage to vary linearly with the applied
force. The strain gage converts the induced strain into an
electrical signal which is proportional to the induced strain.
Model number key
Series –Size –Maximum force –Connector type –Units type –
Sxx
Series
GTS –Global Load Cell
Size
Models A, B
Maximum force
Pounds = English
Kilograms = Metric
Connector type
EC12
Units type
Blank = English units
M = Metric units (dimensions and force)
Sxx
Specials: Other variations

2-3
PRODUCT OVERVIEW
www.maxcessintl.com
MAGPOWR GTS Load Cell
MI 850A347 1 A
Available models
English series
Force rating
GTSA22-EC12
22 lbs
GTSA55-EC12
55 lbs
GTSA110-EC12
110 lbs
GTSB220-EC12
220 lbs
GTSB550-EC12
550 lbs
GTSB1100-EC12
1100 lbs
GTSB2200-EC12
2200 lbs
Metric series
Force rating
GTSA10-EC12M
10 kg
GTSA25-EC12M
25 kg
GTSA50-EC12M
50 kg
GTSB100-EC12M
100 kg
GTSB250-EC12M
250 kg
GTSB500-EC12M
500 kg
GTSB1000-EC12M
1000 kg

2-4
PRODUCT OVERVIEW
www.maxcessintl.com
MAGPOWR GTS Load Cell
MI 850A347 1 A
Selection and
sizing
To properly size any model GTS load cell select the case (which
resembles your application) from the examples shown below.
Using your known maximum tension, roll weight, and angles as
shown, apply the equation to calculate a load rating "L". Select a
load cell with a load rating greater than that calculated.
Example: in Case 2 below
T = 75 kg
A = 180º, B = 30º
w = 20 kg
then
L= ( 2*T * sin(A/2)*(cos B + sin B) )+w/2
L= ( 2(75) *sin 90º *(cos 30º + sin30º) )+ (20/2)
L= ( (150)(1)(0.866 + 0.500) )+10
L= 215 kg
Select a pair of GTSB250-EC12M load cells
NOTES
Angle B cannot exceed 45º.
The second term (roll weight “W"/2) of the
equation must not exceed 50% of the selected
load cell rating. If it does exceed 50%, select
the next larger load cell rating.
When the resultant force (R) is pulling in a
direction away from the load cell, the signal
leads must be reversed at the terminal block of
the control.
Degrees
Sine
Cosine
Degrees
Sine
Cosine
0
0.0000
1.0000
50
0.7660
0.6428
5
0.0872
0.9962
55
0.8192
0.5736
10
0.1736
0.9848
60
0.8660
0.5000
15
0.2588
0.9659
65
0.9063
0.4226
20
0.3420
0.9397
70
0.9397
0.3420
25
0.4226
0.9063
75
0.9659
0.2588
30
0.5000
0.8660
80
0.9849
0.1736
35
0.5736
0.8192
85
0.9962
0.0872
40
0.6428
0.7660
90
1.0000
0.0000
45
0.7071
0.7071
T
T
T
T
T
T
T
T
R
R
R
R
1
1
1
1
2
2
2
2
A/2
A/2
WR
T
T
B
45° MAX
C
L

3-1
SAFETY INSTRUCTIONS
www.maxcessintl.com
MAGPOWR GTS Load Cell
MI 850A347 1 A
Instructions for
use
To ensure safe and problem free installation of the load cell
device, the load cell must be properly transported and stored,
professionally installed and placed in operation. Proper
operation and maintenance will ensure a long service life of the
device. Only persons who are acquainted with the installation,
commissioning, operation and maintenance of the system and
who possess the necessary qualifications for their activities
may work on the load cell. Note: The safety information may
not be comprehensive.
Please note the following:
The content of these operating instructions
Any safety instructions on the device
The machine manufacturer’s specifications
All national, state, and local requirements for installation,
accident prevention and environmental protection
Information
about safety
instructions
The safety instructions and symbols described in this section
are used in these operating instructions. They are used to avoid
possible dangers for users and to prevent material damage.
SIGNAL WORD
Source of danger and its results
Avoiding dangers
The signal word DANGER refers to the danger of death or
serious bodily injuries.
The signal word WARNING refers to the danger of moderate to
severe bodily injuries.
The signal word CAUTION refers to the danger of slight to
moderate bodily injuries or material damage.
The signal word NOTICE refers to the possibility of damage to
equipment.

3-2
SAFETY INSTRUCTIONS
www.maxcessintl.com
MAGPOWR GTS Load Cell
MI 850A347 1 A
Symbols used
The following safety identification symbols are used in these
operating instructions.
WARNING/CAUTION –General danger or important note
Reference to general hazards that may result in bodily injuries
or damage to device or material.
WARNING/CAUTION –Danger due to crushing
Reference to danger of injury caused by crushing.
WARNING/CAUTION –Danger due to cutting
Reference to danger of injury caused by cutting.
WARNING/CAUTION –Danger due to voltage, electric shock
Reference to danger of injury caused by electric shock due to
voltage.
WARNING/CAUTION –Danger due to hot surfaces
Reference to risk of injury caused by burning.

3-3
SAFETY INSTRUCTIONS
www.maxcessintl.com
MAGPOWR GTS Load Cell
MI 850A347 1 A
Basic safety
information
Proper use
The load cell devices are intended to be used on machines or
systems to monitor the tension in a web.
Indoor operation.
Improper use
Operation outside the technical specifications
Operation in an Ex-area or intrinsically safe area without a
proper barrier.
Any other use than the proper use shall be deemed
inappropriate
Installation and commissioning
Any load cell device that is damaged must not be installed or
put into operation.
Only perform installation, maintenance or repair tasks on the
load cell device when the machine has been stopped and is
secured from being turned on.
Only perform installation, maintenance or repair tasks on the
load cell device when there is no electrical power in the system.
The load cell device must be securely mounted before being
placed in operation.
No modifications may be made to the load cell device.
Do not place electrical cables under mechanical strain.
Maintenance and repair
Warning –Danger of injury from crushing
Maintenance and repair tasks on the load cell device must be
performed only when the machine has been stopped and has
been secured from being turned on again.
Decommissioning
The load cell must be disposed of in accordance with all the
applicable national, state and local regulations.

4-1
INSTALLATION
www.maxcessintl.com
MAGPOWR GTS Load Cell
MI 850A347 1 A
Mechanical and
electrical installation
CAUTION –Possible damage to load cell.
Do not hammer on the load cell.
CAUTION –Possible damage to load cell.
Do not disassemble the load cell –there are no
serviceable parts inside the unit.
WARNING –Danger of injury from crushing.
Maintenance and repair tasks on the load cell device
must be performed only when the machine has been
stopped and has been secured from being turned on
again.
1. Select a mounting location where the wrap angle of
the web does not change.
2. GTS load cells are designed to be mounted under
standard, self-aligning pillow block bearings,
which support an idler roll shaft. Two GTS load
cells should be used to measure tension on one
idler roll. Mount the load cells on opposite sides of
the machine, on a clean and flat surface of the
machine frame. The load cells can be mounted in
any orientation.
3. Observe the wrap angle of the web, and insure that
the resultant force due to web tension is in the
“YES” zone as indicated on the label. If not, turn the
load cell around and recheck the direction of the
resultant force.
NOTE: If the resultant force is “upward” (away from
the load cell), reverse the black (-s) and white (+s)
signal leads at the readout or control terminal
block.
Figure 1. Typical Load Cell Usage
Figure 2. Load Cell Wiring
1
2
3
4