Maxcess GTS User manual

1 850A193-1
01/11 Rev.E
Original Instructions
INSTRUCTION MANUAL
Model GTS
Load Cells For Under Pillow Block Applications
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 at www.magpowr.com or by calling 1-800-
MAGPOWR (624-7697).
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 was 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.
INTRODUCTION
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 standard inch and 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.

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MODEL NUMBER KEY
Series – Size – Maximum Force – UnitsType – Sxx
Series: GTS – Global Tension Sensor
Size: A, B
Maximum
Force: Pounds = English Models
Kilograms = Metric Models
UnitsType: Blank = English units (dimensions and force)
M = Metric units (dimensions and force)
Sxx: Specials: Other variations
AVAILABLE MODELS
English Series
Force Rating
Metric Series
Force Rating
GTSA11 11 lb GTSA5M 5 kg
GTSA22 22 lb GTSA10M 10 kg
GTSA55 55 lb GTSA25M 25 kg
GTSA110 110 lb GTSA50M 50 kg
GTSB220 220 lb GTSB100M 100 kg
GTSB550 550 lb GTSB250M 250 kg
GTSB1100 1100 lb GTSB500M 500 kg
GTSB2200 2200 lb GTSB1000M 1000 kg
SAFETY INSTRUCTIONS
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.
•The content of these instructions must be read and followed.
•All national, state, and local requirements for installation, accident prevention and environmental
protection must be followed.
The safety instructions and symbols described in this section 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 WARNING refers to the danger of moderate to severe bodily injuries or death.
The signal word CAUTION refers to the danger of slight to moderate bodily injuries or material damage.
WARNING/CAUTION – General danger or important note
Reference to general hazards that may result in bodily injuries or damage to device or material.

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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.
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 via an
idler roller on a pillow block bearing mounted to the load cell device.
•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 which 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.
MECHANICAL AND ELECTRICAL INSTALLATION
CAUTION – Possible damage to load cell.
Do not hammer on the GTS load cell.
CAUTION – Possible damage to load cell.
Do not disassemble the load cell – There is nothing inside that you can repair.

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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.
4. When installing the pillow block bearing, DO NOT EXCEED THE SPECIFIED MAXIMUM BOLT PENETRATION. The
maximum bolt penetration for the top mounting threads are given in table 1.
CAUTION – Possible damage to load cell.
Do not exceed the specified maximum bolt penetration.
GTSA/M GTSB/M
Maximum Bolt Penetration 16 mm (0.63 in.) 25.4 mm (1.0 in.)
Table 1. Maximum Bolt Penetration
5. If the shaft is exposed to higher temperatures during operation, an expansion type pillow block bearing must be used
to accommodate shaft expansion.
6. The sensing roll must be concentric and balanced for high speed operation.
7. Connect the load cell to the MAGPOWR readout or control with shielded cable.
Figure 1. Typical GTS Load Cell Usage Figure 2. Load Cell Wiring

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DIMENSIONS
INCH MODEL DIMENSIONS (INCHES)
Model A B C D E F G H J K L M
GTSA 7.25 6.375 5.0 3.750 1.00 2.00 2.50 6 0.422 3/8-16 0.63 0.50
GTSB 11.19 10.000 8.0 6.250 1.25 2.50 3.88 12 0.500 7/16-14 1.00 1.00
METRIC MODEL DIMENSIONS (MILLIMETERS)
Model A B C D E F G H J K L M
GTSAM 184 162 127 95 25 51 64 152 11 M10X1.5 16 13
GTSBM 284 254 203 159 32 64 98 305 13 M12X1.75 25 25
TOP PLATE ADAPTERS

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SPECIFICATIONS
WARNING – Do not use the devices outside of their rated specifications.
Gage Resistance 350 ohm
Gage Type Metal foil, full bridge
Excitation Voltage 10 VDC nominal
Output Signal 21 mVDC nominal at full load rating
Operating Temperature -30ºC to 95ºC
Temperature effect on zero 0.02% of rating per ºC
Combined non-linearity and hysteresis 0.5% of full scale maximum
Repeatability 0.2% of full scale maximum
Overload stops 105% to 150% of full load rating
Deflection at full load GTSA = 0.38 mm [0.015 in.];
GTSB220 & 550 = 0.23 mm [0.009 in.];
GTSB1100 = 0.15 mm [0.006 in.];
GTSB2200 = 0.38 mm [0.015 in.]
Weight GTSA = 1.4 kg [3 lb.];
GTSB = 3.4 kg [7.5 lb.];
TA1 = 0.14 kg [0.3 lb.];
TA2 = 0.18 kg [0.4 lb.];
TA3 = 0.9 kg [1.9 lb.];
Cable Connector PT01W-10-6P; MAGPOWR mating cable assembly Part #SCE15, or mating
connector Part #12B193-6 (pin A, +power; pin b, + signal; pin C, -signal; pin
D, -power)
Climate Class 3K4 (EN60721)
IP Protection Classification IP67 (EN60529)
TOP PLATE ADAPTER KITS
Due to the large number of metric pillow blocks, and in keeping with metric practices, mounting adapter kits are available
for the metric series load cells. Order one kit for each load cell. Load cells are pre-tapped to receive the correct adapter
kit.
Model No. Description
TA1 11 mm T-Slot Kit for GTSAM; includes 2 rails and four M6 screws
TA2 12 mm T-Slot Kit for GTSAM; includes 2 rails and four M6 screws
TA3 Blank Top Plate Kit for GTSBM; includes plate and four M10 screws
INSTALLATION OF ADAPTER KITS
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.
The TA1 and TA2 T-Slot Adapter kits can be installed on any GTSAM load cell.
TA1 and TA2 Installation:
Position the (2) T-Slot rails over the (4) mounting holes in the top of the GTSAM load cell, and install the (4) screws
through the counter-bored holes in each rail.
The TA3 Blank Top Plate Kit can be installed on any GTSBM load cell.
TA3 Installation:
Drill and tap holes in the top plate adapter to accommodate the mounting of the pillow block.
Position the TA3 adapter over the (4) mounting holes in the top of the GTSBM load cell, and install the (4) screws
through the counter-bored holes in the adapter plate.

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CAUTION – Possible damage to load cell.
The Adapter Kit must be installed on the load cell after the pillow block mounting holes have been drilled
and tapped. Do Not drill and tap holes with the Adapter Kits installed on the load cell.
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 = 150 lbs., A = 180º, B = 30º, w = 50 lbs.
then L = ( 2*T * sin(A/2)*(cos B + sin B) )+w/2
L = ( 2(150) *sin 90º*(cos 30º+ sin30º) )+ (50/2)
L = ( (300)(1)(0.866 + 0.500) )+25
L = 435 lbs.
Select a pair of GTSB550 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

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SERVICE REQUESTS AND REPLACEMENT PARTS
To request service or to get replacement parts, contact one of the following addresses:
Fife Corporation
222 West Memorial Rd.
Oklahoma City, OK, 73114, USA
Phone: [phone]
Fax: [phone]
Web: www.maxcessintl.com
Fife-Tidland GmbH
Fifestrasse 1
65779 Kelkheim
Deutschland
Telefon: [phone]
Fax: [phone]
Web: www.maxcess.eu
Siemensstrasse 13-15
48683 Ahaus
Deutschland