1.2.3 Overloading - Repetitive overloading above the
maximum working force, shock or severe overloading
should be avoided because they can damage the unit.
1.2.4 Overvoltage - The excitation voltage should not
exceed 10 VDC or AC (RMS). Excessive voltage can
destroy the semiconductor strain gages.
The voltage between the gage and beam or base
(ground) should not exceed a peak of 50 volts.
Exceeding this voltage can cause an insulation
breakdown between the gage and the beam.
1.0 GENERAL INFORMATION
1.1 RECEIVING AND UNPACKING
Handle and unpack the equipment carefully.
Immediately upon arrival, check the shipment against the
packing list. Any damage should be reported
immediately to the carrier and to the nearest CMC®
representative.
Equipment which will not be installed immediately should
be stored in a clean, dry location. Precautions should be
taken to prevent moisture, dust and dirt from
accumulating in storage and installation area.
1.2 PRECAUTIONS
1.2.1 Shipping - It is recommended that the sensing roll
be removed when the machine is shipped with the
transducers mounted. The shock and vibration
transmitted to the transducers by the sensing roll during
transporting can damage them.
1.2.2 Handling - An impact such as dropping the
transducer or a sharp blow to the transducer can
damage it. The unit should be completely surrounded by
a soft foam cushion when being transported.
1.3 SPECIFICATIONS
Gage Resistance - 220 ohms per leg nominal
Gage Factor - 100 nominal
Excitation Voltage - 5.6 VDC or VAC (RMS)
nominal. Not to exceed
10 VDC or VAC (RMS)
Output Signal
at Rated MWF - 20mV/V, 30mV/V
(Alum, Steel)
Size 1 Steel, Size 2 Steel
Output Impedance - Approximately 850 ohms
at 25EC
Size 1 Aluminum
- Approximately 120 ohms
at 25EC
Required Input
Impedance of
Tension Amplifier - 5000 ohms
Insulation Breakdown
Voltage Gage to Beam - 50 volts peak
Operating Temperature - 0EF to +150EF
1.4 DESCRIPTION
The Cantilever transducers were designed to measure
tension in webs having widths of up to 30 inches.
Sensing beams to which semiconductor strain gages are
bonded form a half bridge circuit. With these high signal
output gages a very small force on the roller is shown as
a change in the tension output signal.
The cantilever transducer cartridge is not fitted with a
sensing roll as standard. Provision is made to mount a
sensing roll in the end of the cartridge. Several shaft
diameters can be selected by choosing an appropriate
adapter. The transducer is nearly insensitive to the
location of the net web force along the length of the roll.
The Cantilever tension transducers* are available in two
sizes, 1 and 2 in four different mounting configurations,
S, FL, PB, and BR. There are also “Metric” and
“English” versions of each size. (*U.S. patent #
4326424. Foreign patents upon request.)
The different configurations are made by adding
mounting hardware modules to the transducer
cartridges. In each of the sizes, the transducer
cartridges are available with the connector mounted
either on the side or the end.
The CLTSC-1T and CLTSC-2T cartridges have the
connector located on the side. These cartridges can be
mounted to the machine frame with a single bolt which
goes through the machine frame for the type “S”
mounting.
The flange mounting kit can be clamped onto the groov e
near the edge at the end of the type CLTSC-1T and
CLTSC-2T cartridge. The cartridge can then be
mounted to the machine frame by the flange with four
mounting bolts for the type “FL” mounting.
The type CLTEC-1T and CLTEC-2T cartridges have
the connector located on the end. The cartridge can be
converted to a pillow block type transducer by adding
the pillow block (PB) mounting kit. The cartridge is
inserted into the pillow block base and then the lockplate
is bolted to the end of the cartridge. The transducer is
mounted to the machine frame with two bolts through
the pillow block base for the type “PB” mounting.
The type CLTEC-1T and CLTEC-2T cartridges can
also be mounted through the machine frame by using the
type BR mounting kit. The cartridge is inserted through
a hole in the machine frame and then the lockplate is
bolted to the end of the cartridge for the type “BR”
mounting.
AO-701352 of 11
2.0 INSTALLATION
2.1 SELECTION OF TRANSDUCER
MOUNTING LOCATION
When selecting a transducer mounting location, keep in
mind that the tension sensing roll must NOT be mounted
where the web wrap can vary. Any change in wrap
angle will be sensed by the transducers as a change in
tension, and indicated as such on the indicator.
Figure 2
In some cases it may be impossible to find a location for
the transducer when the wrap angle does not vary. The
change in indicated tension which will result can be
calculated, and if small may not be significant.
2.2 GENERAL INSTALLATION
INFORMATION
Orient the base of the transducer so that the force
applied by the web will be in line with the load line label
and that the resulting force caused by the web will be
opposite the load line as shown in Figure 3
Figure 3
AO-701353 of 11
2.3 METHODS OF INSTALLATION - “ENGLISH” DIMENSION TRANSDUCERS
2.4 CLT CONFIGURATION GUIDE
These diagrams illustrate the various configuragions provided by the CLT modular design.
Note: Cantilevered Transducers CLT are designed for use with cantilevered rolls only. See operating parameters.
2.5 TRANSDUCER RATINGS
AO-701354 of 11
2.6 SELECTING A CANTILEVERED TRANSDUCER CLT FOR YOUR APPLICATION:
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2.7 DIMENSIONAL DATA
AO-701356 of 11
2.8 METHODS OF INSTALLATION - “METRIC” DIMENSION TRANSDUCERS
2.9 CLT CONFIGURATION GUIDE
These diagrams illustrate the various configuragions provided by the CLT modular design.
Note: Cantilevered Transducers CLT are designed for use with cantilevered rolls only. See operating parameters.
2.10 TRANSDUCER RATINGS
AO-701357 of 11
2.11 SELECTING A CANTILEVERED TRANSDUCER CLT FOR YOUR APPLICATION
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2.12 DIMENSIONAL DATA
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3.0 ELECTRICAL CONNECTIONS
Refer the the installation wiring diagram supplied with
the CLEVELAND-KIDDER tension indicator or
controller for making the transducer connections. Make
certain that the cable does not interfere with the web
path and that it is away from gearing or other moving
parts.
The following wiring diagrams are for reference only.
Most of the CLEVELAND-KIDDER indicators and
controllers will accept a half bridge input as shown in
Figure 4 or in Figure 5. See the applicable installation
wiring diagrams for the tension indicator or controller.
3.1 MATING CONNECTORS FOR
TRANSDUCERS
USE CMC P/N
Mating Straight Connector,
Boot and Clamp Kit MO-09854
Mating 90 Angle Connector,
"
Boot and Clamp Kit MO-09855
3.2 INTRINSICALLY SAFE TRANSDUCERS
These transducers are intrinsically safe only when they
are part of a complete intrinsically safe system using the
TIX-1 tension indicator or wired per CMC control
drawings.
For transducers utilizing a 5.6 VDC (±2.8 VDC)
excitation voltage refer to CMC Control Drawing A800-
42273. For transducers utilizing a +5VDC excitation
voltage refer to CMC Control Drawing A800-42281.
Figure 4
Figure 5
Barrier block assemblies and/or the individual barrier
blocks may be purchased from CMC. Please contact
CMC for part numbers and pricing.
4.0 TEMPERATURE COMPENSATION
The size 1T and 2T steel transducers are supplied with
a temperature compensation network which is in series
with the output signal lead. The compensation circuit is
designed to be used with a tension amplifier which has
an input impedance of 5K Ohms. If other than the input
impedances given above are used, drift will occur in the
tension amplifier output when the transducer
temperature changes. Size 1T aluminum transducers use
a beam material that does not require temperature
compensation.
5.0 TROUBLESHOOTING
5.1 LOW OUTPUT SIGNAL
The transducer may have too large a maximum working
force for the application. Replace with a lower
maximum working force transducer or increase the web
wrap angle.
AO-7013510 of 11
5.2 OUTPUT SIGNAL FAILS TO INCREASE
WITH ADDED LOAD
The transducer is overloaded and is hitting the
mechanical stop. Replace the transducer with one
having a higher maximum working force or reduce the
load. (This may be accomplished by reducing the web
wrap angle.)
5.3 WRONG POLARITY OF OUTPUT
SIGNAL
Transducer may have been incorrectly oriented. Make
certain that the web force is being applied to the top side
of the transducer which is identified by the load line label
as shown in Figure 2 on page 3. If rotation is impossible,
interchange the transducer leads as instructed in the
tension indicator or controller manual.
5.4 NO OUTPUT SIGNAL
Check to see that all connections have been made
completely. Check for places where the connecting
cable might be crimped or cut.
to Pin B ±12 ohms
6.0 SERVICE ASSISTANCE AND
REPAIR
For additional service assistance, please obtain the Type,
MWF, and Serial Number from the nameplate. Contact
the Factory Service Department.
Phone: (216) 524-8800
Fax: (216) 642-2100
Disassembly by improperly trained personnel may result
in additional damage to these units. Should repairs be
required or for warranty repairs, contact the Customer
Service Department for a return authorization number
before returning the unit.
5.5 VERY HIGH OUTPUT WITH NO LOAD
Check cable and connector for good connections and
check continuity of cable with an ohmmeter. Check for
proper wiring to transducer. Check transducer gage
resistance as given in the following chart at room
temperature with no load applied.
TRANSDUCER GAGE RESISTANCE CHECK
Size 1T, 2T Steel
Measurement Resistance
Pin B to Pin C 440 ohms ±72 ohms
Pin A to Pin B 700 to 1400 ohms
Pin A to Pin C Equal to Pin A
to Pin B ±12 ohms
Size 1T (Aluminum)
Measurement Resistance
Pin B to Pin C 440 ohms ±72 ohms
Pin A to Pin B 220 ohms ±36 ohms
Pin A to Pin C Equal to Pin A
AO-7013511 of 11
7.0 WARRANTY AND LIMITATION OF LIABILITY
CLEVELAND MOTION CONTROLS, INC.
LIMITED WARRANTY. LIMITATION OF REMEDY AND
ALL GOODS ARE SOLD SUBJECT TO
THE MUTUAL AGREEMENT THAT
THEY ARE WARRANTED BY THE
COMPANY TO BE FREE FROM DEFECT S
IN MATERIAL AND WORKMANSHIP
FOR ONE YEAR FROM THE DATE OF
SHIPMENT. THE COMPANY'S
WARRANTY DOES NOT COVER, AND IT
MAKES NO WARRANTY WITH
RESPECT TO ANY DEFECT, FAILURE,
DEFICIENCY OR ERROR WHICH IS:
A) NOT REPORTED TO THE
COMPANY WITHIN THE
APPLICABLE WARRANTY
PERIOD; OR
B) DUE TO MISAPPLICATION,
MODIFICATION, DISASSEMBLY,
ABUSE, MISUSE, IMPROPER
INSTALLATION,
UNAUTHORIZED REPAIR,
IMPROPER MAINTENANCE OR
ABNORMAL CONDITIONS OF
TEMPERATURE, DIRT OR
CORROSIVE MATTER; OR
C) DUE TO OPERATION, EITHER
INTENTIONAL OR OTHERWISE,
ABOVE RATED CAPACITIES OR
IN AN OTHERWISE IMPROPER
MANNER.
THE FOREGOING WARRANTY IS IN
LIEU OF ALL OTHER WARRANTIES.
THE PARTIES AGREE THAT THE
IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE AND
ALL OTHER WARRANTIES, EXPRESS
OR IMPLIED, ARE EXCLUDED FROM
THE SALE OF GOODS.
LIABILITY.
THE REMEDY PROVIDED HEREIN IS
BUYER'S SOLE AND EXCLUSIVE
REMEDY. THE BUYER'S REMEDY AND
THE COMPANY'S LIABILITY
(WHETHER UNDER THE THEORIES OF
BREACH OF WARRANTY, CONTRACT,
TORT INCLUDING NEGLIGENCE OR
STRICT LIABILITY OR ANY OTHER
LEGAL THEORY) SHALL BE LIMITED
EXCLUSIVELY AT THE COMPANY'S
OPTION TO REPLACING OR
REPAIRING WITHOUT CHARGE AT
THE COMPANY'S FACTORY OR
ELSEWHERE ANY MATERIAL OR
WORKMANSHIP DEFECTS WHICH
BECOME APPARENT WITHIN ONE
YEAR FROM THE DATE ON WHICH
THE GOODS WERE SHIPPED. THE
COMPANY SHALL NOT BE LIABLE FOR
SPECIAL, INCIDENTAL OR
CONSEQUENTIAL DAMAGES OF ANY
KIND INCLUDING BUT NOT LIMITED
TO DAMAGES FOR LOSS OF USE,
INCOME OR PROFIT, OR LOSSES
SUSTAINED AS A RESULT OF INJURY
(INCLUDING DEATH) TO ANY PERSON
OR DAMAGES TO PROPERTY. THE
COMPANY SHALL HAVE NO LIABILITY
FOR DAMAGES OF ANY KIND ARISING
FROM THE INSTALLATION AND/OR
USE OF THE GOODS BY ANYONE. BY
THE ACCEPTANCE OF THE GOODS,
THE BUYER SHALL ASSUME ALL
LIABILITY FOR ANY DAMAGES WHICH
MAY RESULT FROM USE OR MISUSE
BY THE BUYER, ITS EMPLOYEES OR
BY OTHERS.
AO-7013512 of 11
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