DFE TrueTension TI17C User manual

5 YEAR WARRANTY
DOVER FLEXO ELECTRONICS, INC.
ISO 9001 CERTIFIED
INSTRUCTION MANUAL
TTRUE ENSION™
TENSION INDICATOR
Models TI17C and TI18C
with Quik-Cal™
Model TI17CV
in Vertical Mounting Bracket
Model TI18CV-COV
in Vertical Mounting Bracket with Cover
Model TI18CH
Horizontal Card

217 Pickering Road
Rochester, NH 03867-4630 U.S.A.
For assistance, please call:
TECHNICAL SERVICE - Installations, Start-Up, Troubleshooting, Repairs, Field
Service, Returns. [email protected]
CUSTOMER SERVICE - Replacement Parts, Individual Products, Questions about
Orders, Manuals. [email protected]
SALES - Product Information, Systems Application Questions, and
placing orders for standard products and special systems.
[email protected]
Telephone: [phone] Fax: [phone]
E-mail: [email protected] Internet: www.dfe.com
©2018 Dover Flexo Electronics, Inc. All rights reserved. Dover Flexo Electronics has made reasonable effort to ensure accuracy of this
document. However NO WARRANTY, whether expressed or implied, is given regarding the completeness or correctness of information in
this document. Dover Flexo Electronics shall not be liable for damages of any kind arising from the use or misuse of this document. Dover
Flexo Electronics reserves the right to make changes, additions, and deletions to this document without notice and without obligation.

NEW!
QUIK-CAL™ PUSHBUTTON ZERO-SET AND CALIBRATION-SET
The new Ti17C and Ti18C tension indicators/transducer interfaces are built with a new
labor-saving technology called Quik-Cal! They do not have potentiometers for zero and
calibration settings. Instead, they have pushbuttons. Push the button once, for one second,
and you are done!
No tension display is needed. No screwdriver is needed. No second-person is needed.
ZERO SET
The weight of the transducer roll produces an output that is not caused by web tension.
This is not desirable because it is not a tension measurement. To set the output of the
indicator to zero when there is no tension, just press the ZERO button for one second.
You can even eliminate the need to press the ZERO button! The indicator can
automatically set the output to zero when power is turned on. Just change a jumper setting
on the circuit board.
CAL SET
The weight you select for calibration determines the full-scale tension signal output. The
indicator automatically multiplies the weight by the built-in calibration ratio to calculate full
output.
The calibration ratio is the ratio of the calibration weight to the tension at full output.
The standard calibration ratio is 1:10, or 10%. So if you hang a 15 lb. weight and push the
CAL button, the indicator will produce full output at 150 lbs. tension.
A calibration ratio of 25% is available for low tensions. (This is selected by a jumper on the
circuit board). Use of a 15 lb. calibration weight will produce full output at 60 lbs. tension.
STABILITY is another benefit of this technology. The zero and calibration settings are stored
digitally, so there is no drift over time and temperature variations as there can be with
potentiometers.
Read Section 3.3 for details.
The Ti17C is C marked in its full enclosure version with cover.
The Ti18C is C marked in all configurations.
The Ti17C and Ti18C are UL/cUL Listed in their full enclosure version
with cover.
-a-

-b-

TABLE OF CONTENTS
SECTION ONE PRODUCT DESCRIPTION
1.1 General Description ........................................ 1
1.2 Exploded View of Ti17C and Ti18C ............................ 1
1.3 Specifications ............................................. 2
1.4 Environmental Conditions .................................... 3
1.5 Standard Features ......................................... 3
1.6 Options .................................................. 4
1.7 Accessories .............................................. 5
SECTION TWO INSTALLATION
2.1 Dimensions............................................... 6
2.2 Selection of Mounting Location ............................... 7
2.3 Safety & EMC Requirements ................................. 7
2.4 Installation Instructions ...................................... 9
2.5 Transducer Voltage Selection ................................ 10
2.6 Tension and Meter Output Selection ........................... 10
2.7 Standard Electrical Connections .............................. 11
2.8 Tension Limit Switch External Relay Connections ................. 12
SECTION THREE CALIBRATION AND SETUP
3.1 Preparation ............................................... 13
3.2 Mechanically Zero the Tension Meter .......................... 13
3.3 Calibrate the Output for Accuracy ............................. 13
3.4 Calibration and Adjustment of Tension Limit Switch ............... 15
SECTION FOUR OPERATING INSTRUCTIONS ............................... 17
SECTION FIVE CARE AND MAINTENANCE ................................. 18
SECTION SIX TROUBLESHOOTING GUIDE ................................ 19
SECTION SEVEN REPLACEMENT PARTS .................................... 20
APPENDICES
APPENDIX: A Location of Jumpers and Adjustments (Figures 17, 18) ............. 21
B Electrical connections (Figures 19, 20) ......................... 22
C Transducer Electrical Connections (Figures 21-24) ............... 24
D Typical Tensions of Various Materials .......................... 28
E Environmental Terms ...................................... 29
Terms and Conditions of Sale and Shipment .................... 30
Declaration of Conformity - Ti17C ............................. 31
Declaration of Conformity - Ti18C ............................. 32
Index .................................................... 33

LIST OF ILLUSTRATIONS
FIGURE PAGE
1 Exploded View of Horizontal Mounting Style ..................... 1
2 Exploded View of Vertical Mounting Style ....................... 2
3 Horizontal Mounting Dimensions .............................. 6
4 Vertical and Open Bracket Mounting Dimensions ................. 6
5 Accessory Tension Meter Dimensions .......................... 7
6 Accessory Tension Meter Enclosure Dimensions ................. 7
7 Cover Stud Hardware ....................................... 8
8 Transducer Voltage Jumpers ................................. 10
9 Tension and Meter Output Jumpers ............................ 10
10 Standard Electrical Connections .............................. 11
11 Tension Limit Switch External Relay Connections ................. 12
12 Ti17C / Ti18C PC Board ..................................... 13
13 Web Path ................................................ 14
14 Tension Limit Switch Board Adjustments .......................15
15 Tension Limit Switch Test Point Values ......................... 16
16 Replacement Part Numbers .................................. 20
17 Ti17C / Ti18C PC Board .................................... 21
18 Optional Tension Limit Switch Board ........................... 21
19 Standard Electrical Connections .............................. 22
20 Optional TLS External Relay Electrical Connections ............... 23
21 Models C, RS, & UPB Transducer Wiring ....................... 24
22 RFA Transducer Wiring ..................................... 25
23 TR & NWI Transducer Wiring ................................. 26
24 LT Transducer Wiring ....................................... 27

SECTION 1 PRODUCT DESCRIPTION
1.1 GENERAL DESCRIPTION
The True Tension™ Ti17C and Ti18C Tension Indicators are designed to provide an isolated interface
between any type of DFE tension transducer and a variable speed drive system, computer, tension recorder, or
other devices for tension control and display purposes. They also have a separate output to allow the user to
connect an analog meter to indicate operating tension. A single terminal block plugs into the circuit card, to
which all external connections are made. This plug-in feature allows for easy field installation and servicing.
Models Ti17C and Ti18C are available with three mounting configurations and a choice of 0-10 Vdc or 4-
20mA isolated outputs. Quik-Cal™ pushbutton zero and calibration comes standard. Dual calibration is also
standard.
The only difference between the Ti17C and the Ti18C indicators is their power input requirements. The
Ti17C operates on 115Vac 60Hz (230Vac 50Hz optional) and the Ti18C operates on 24Vdc, power supplied
separately.
The Ti17C is C marked in its full enclosure version with cover. The Ti18C is C marked in all
configurations.
The Ti17C and Ti8C are UL/cUL LISTED in their full enclosure version with cover.
n WARNING: The isolated output is designed to prevent ground loops and noise. It is not intended or
approved for safety isolation of hazardous voltages. Do not install unit where the isolated circuit and chassis
ground are more than 40Vpk differential.
n WARNING: Ti17C models are designed for single phase AC operation only. Do not connect them across
three phase lines or to three phase circuits to prevent product damage and potential hazard.
1.2 EXPLODED VIEWS OF Ti17C and/or Ti18C
Figure 1 - EXPLODED VIEW OF HORIZONTAL MOUNTING STYLE
1

1.2 EXPLODED VIEWS OF Ti17C and/or Ti18C continued...
Figure 2 - EXPLODED VIEW OF VERTICAL MOUNTING STYLE
1.3 SPECIFICATIONS
Power Input: Voltage: .............. Ti17C = 120/230VAC +/- 10%, 50/60Hz, Single Phase
AC operation only for Ti17C.
.............. Ti18C = 24 Vdc +/- 10%.
Typical Current: .............. Ti17C = 120 VAC, 50/60 Hz = 0.102/0.047 Amp AC
.............. 240 VAC, 50/60 Hz = 0.053/0.025 Amp AC
.............. Ti18C = 0.058Amp DC.
Maximum Current: .............. Ti17C = 120/230 VAC = 0.160/0.080 Amp AC
.............. Ti18C = 0.50 Amp DC
Tension Signal Outputs: .............. 0 to +10Vdc OR 4 to 20mA (jumper selectable), both
isolated from input power and transducer circuit.
.............. 0 to +10Vdc capable of over-range, -15% to 120% of full
scale (-1.5Vdc to 12Vdc), to indicate over-range or error
conditions.
.............. 0 to +10Vdc max loading is 5mA. This requires a
2000 Ohm or greater input resistance for equipment
connected to this output.
.............. 4-20mA capable of over-range, -15% to 120% of full
scale (1.6mA to 23mA), to indicate over-range or error
conditions.
2

1.3 SPECIFICATIONS continued...
Tension Signal Outputs: continued... .......... 4-20mA max loop resistance is 500 Ohms.
.............. 0 to 1mA meter output with adjustable damping for
optional tension meter.
Output response Time .............. ~ 4 milliseconds (4.13 ms)
Weight: .............. 0.5 lbs (0.23 kg) horizontal, 2.0 lbs (0.91 kg) vertical
Transducer Signal Input: .............. 0.5Vdc at rated load per pair (1.00Vdc for XRE option).
Transducer Excitation: .............. 5Vdc (10Vdc for the XRE option) jumper selectable.
Accuracy: .............. Max error of 1% over temperature range. 0.1% Typical.
Zero (Tare) Range: .............. Minimum 95% of transducer rating.
Calibration Range: .............. Minimum 50 : 1.
Ambient Temperature Range: .............. 32°F to 104°F (0°C to 40°C).
Accessory tension meter types: .............. Analog 1mA, 3.5" (DFE P/N: 722-1385), or meter in
enclosure for CE models (DFE P/N: 723-2682).
Standard tension meter scales: .............. 0 to: 1, 5, 10, 25, 50, 100, 150, 250, 500, 1000.
1.4 ENVIRONMENTAL CONDITIONS (Ref. Appendix E for Environmental Term definitions)
This equipment is safe for use under the following conditions:
• Indoor use.
• Altitude up to 6500 ft (2000 meters).
• Temperature range: 32° F to 104° F (0° C to 40° C).
• Maximum relative humidity 95% over the temperature range (non-condensing).
• Main supply voltage fluctuations not to exceed +/-10% of the nominal voltage.
• Main supply transient overvoltages according to overvoltage category II of IEC 60364-4-443.
• Pollution Degree 2 in accordance with EN61010-1:2001.
1.5 STANDARD FEATURES
SOME OF THESE FEATURES REQUIRE CONFIGURATION OR EXTERNAL WIRING. REFER TO
SECTION 2.4 FOR INSTALLATION INSTRUCTIONS AND SECTION 2.7 FOR WIRING.
•Quik-Cal™ push-button zero and calibration eliminates pot adjustments to make calibrating simple and fast.
•0 to +10V Tension Output OR 4 to 20mA Tension Output. Proportional to tension. Used as an input to a
controller or instrumentation system. Both are isolated outputs standard. See Section 3.1 for installation and
adjustment.
n WARNING: The isolated output is designed to prevent ground loops and noise. It is not intended or approved
for safety isolation of hazardous voltages. Do not install unit where isolated circuit and chassis ground are more
than 40Vpk differential.
•0-1mA Tension Output. A separate output with adjustable damping, used for driving an optional analog
tension meter.
•Adjustable Meter Damping. Used to adjust the responsiveness of the optional analog tension meter. Does
not affect the 0-10V/4-20mA output.
•Power Voltage Selection. The Ti17C Interface / Indicator is designed to operate at either the standard
115Vac or the optional 230Vac. The Ti18C operates on 24Vdc.
•Easily serviceable. The unit can easily be removed after unplugging the mating connector.
•Small size. Fits where many other products cannot.
3

1.5 STANDARD FEATURES continued...
•Output Isolated from Earth Ground. Isolation is provided between the output circuit and transducer ground,
simplifying installations.
•Dual Calibration. Allows two calibration settings. Dual calibration example applications:
a. One set of transducers operating in a wide tension range. Dual calibration and dual meter scale is used to
enhance the resolution of indicated tension.
b. One set of transducers that may be subject to two different wrap angles or web paths. In this case a dual
meter scale may, or may not, be required.
•Screw Clamp Mating Terminal Block Connector. Allows easy connection of external wiring.
•Status LED. Green LED flashes to verify ZERO and CALIBRATION, and indicates presence of power and
proper circuit operation. If power is on and no faults are detected, LED will be on solid. LED will flash
momentarily to indicate acceptance of a ZERO or CALIBRATION button push.
•Short Circuit Protection. Unit automatically protects transducer excitation and tension output from short
circuits or excessive loading. If a short circuit is detected, the unit will safely shut that portion of the circuit
off until the fault is cleared. Unit automatically recovers when the fault is removed.
1.6 OPTIONS
SOME OF THESE OPTIONAL FEATURES REQUIRE CONFIGURATION OR EXTERNAL WIRING.
REFER TO SECTION 2.4 FOR INSTALLATION INSTRUCTIONS AND SECTION 2.7 FOR WIRING.
•0-100 Microamp Output (100M). 0-100 microamp output to drive tension meter. Jumper selectable.
•25% Calibration Weight (25CW). Used when 25% of full scale calibration weight is desired instead of the
standard 10% calibration weight. Jumper selectable to 10% or 25%.
•230 Volt Input (230). 230Volt, 50 Hz AC power input. Ti17C only.
n WARNING: Ti17C models are designed for single phase AC operation only. Do not connect them across
three phase lines or to three phase circuits to prevent product damage and potential hazard.
•Auto Zero (AZ). Unit will auto zero the output on each power up. Jumper selected on or off.
•Cover (COV). Cover restricts access to board and provides complete enclosure. V version only.
n WARNING: Ti17C models require the full case and properly installed cover for CE approval. Operating
without a properly installed cover as directed in section 2.3 invalidates CE approval and may pose a shock
hazard.
n WARNING: Ti17C and Ti18C models require the full case and properly installed cover for UL/cUL
Listing. Operating without a properly installed cover as directed in section 2.3 invalidates UL/cUL Listing
and may pose a shock hazard.
•DIN Rail Clip (DRC). To be used with 35 mm DIN rail. V version only.
•4 to 20mA Output (I420). Isolated 4-20 mA current output, used in place of isolated 0 to +10V output.
Jumper selected between 0 to +10V and 4-20mA.
•Tension Limit Switch (TLS). An open collector output actuates at a pre-set adjustable trip point. Can be used
as a web break detector, or high tension warning. A red LED activates on the front panel when TLS is
triggered. Low and high trip points are independently adjustable. Trigger delay is adjustable.
n WARNING: TLS must not be used to switch hazardous voltages. It is rated for 24Vdc Maximum.
Maximum current is 250mA. Ensure a proper dropping resistor is used to limit current to 250mA or less.
Excess current or voltage can permanently damage the product and may pose a shock or fire hazard.
• Extended Range (XRE). 10 Vdc excitation for Extended Range transducers. Allows measurement of much
lower tension than usual. Transducers must also have the XR option. Jumper selectable to 5Vdc or 10Vdc.
4

1.7 ACCESSORIES
•Remote Tension Meter. Analog, 1 mA (DFE P/N: 722-1385) supplied as a single unit. Must be installed by
user. This meter is also available in its own enclosure (DFE P/N: 723-2682) for CE compliant models. See
Specifications for standard scales. Any other meter scale can be made for an additional charge
! IMPORTANT: Both Ti17C and Ti18C models require a meter in enclosure along with a properly shielded
cable to maintain CE approval if an accessory meter is used. See Section 2.3 for more information.
5

SECTION 2 INSTALLATION
2.1 DIMENSIONS inches (mm)
Figure 3 - HORIZONTAL MOUNTING DIMENSIONS
Figure 4 - VERTICAL BRACKET MOUNTING DIMENSIONS
6

Figure 5 - ACCESSORY TENSION METER DIMENSIONS (DFE Part# 722-1385)
Figure 6 - ACCESSORY TENSION METER ENCLOSURE DIMENSIONS (DFE Part# 723-2682)
2.2 SELECTION OF MOUNTING LOCATION
To ensure safety and proper operation, the Ti17C or Ti18C must be located away from dusty or wet environ-
ments. The Ti17C or Ti18C Horizontal configuration should be installed in a cabinet or enclosure. The vertical
mount configuration should be mounted to a secure wall or surface that can support in excess of 10 lbs. (4.6 kg).
2.3 SAFETY AND EMC REQUIREMENTS
n WARNING If this equipment is not connected or operated in the manner specified, the operating safety of this
unit or of connected equipment cannot be guaranteed.
n WARNING: The isolated output is designed to prevent ground loops and noise. It is not intended or approved
for safety isolation of hazardous voltages. Do not install unit where isolated circuit and chassis ground are more
than 40Vpk differential.
n WARNING: Ti17C models require the full case and cover for CE approval and UL/cUL Listing. Operating
without a properly installed cover invalidates CE approval and UL/cUL Listing and may pose a shock hazard.
7

2.3 SAFETY AND EMC REQUIREMENTS continued...
n WARNING: Ti17C and Ti18C models require the full case and properly installed cover for UL/cUL Listing.
Operating without a properly installed cover invalidates UL/cUL Listing and may pose a shock hazard.
The cover installation hardware must be fully installed per the following:
The male stud sticking out of the cover requires solid ground bonding to the case for safety. See Figure 7.
An M3 star washer (DFE P/N 124-0040) must be installed over the stud before inserting the cover into the base
enclosure. After inserting the cover with the M3 star wedged between case and cover, install the three remaining
pieces of hardware. Place another M3 star (DFE P/N 124-0040) on the stud first, a split lock washer (DFE P/N
124-0080) second, and the nut (DFE P/N 125-0012) last. Tighten the nut to 0.79N-m (7 in-Lb) of torque for
proper compression and retention. Install the other three M3 screws into the cover to complete the installation.
NOTE: This process needs to be performed any time the cover is removed to ensure safety from shock hazards.
To minimize the need to remove the cover for wiring changes or installation, consider using the accessory Spring
Clamp Mating Terminal Block (DFE P/N: 721-2152). This allows wiring changes without removing the cover.
Figure 7 - COVER STUD HARDWARE INSTRUCTIONS
! IMPORTANT: The DFE Model Ti17C you have purchased has been tested and meets the European Union's
Low Voltage Directive, EMC Directive, and is UL/cUL LISTED only when the available enclosure and cover
have been purchased and when installation is done correctly. For safety reasons, it is necessary to use
appropriate wiring for your line voltage connections and for safety grounding. Make your ground connection
between a reliable earth ground and the safety ground of your indicator using a wire with a gauge of at least 16
AWG (or a cross-sectional area of at least 1mm2) and insulation rating of at least 600V. Make your AC line
voltage connections with wire gauge of at least 16 AWG (or a cross-sectional area of at least 1mm2) and
insulation rating of at least 600V for each conductor. Secure this wiring to prevent inadvertent removal or strain
on the input terminal.
An external switch or circuit breaker is required for power disconnection on the Ti17C, and it is
recommended that this switch or circuit breaker be near the equipment, and be well labeled.
In addition, to meet the EMC Directive, a proper transducer installation, including shielded cables must also
be used. The following is a list of cables available from DFE which meet this requirement:
721-0084 CN 3-conductor cable for type C, RS, THN, and UPB transducers. Use 2 cables, 1 cable per
transducer.
721-0964 CN 6-conductor cable for type RFA, LT, VNW, and TR and NW transducers.
721-0984 CN 6-conductor cable for NWI and TR2 (prior to Oct. 2010).
Other cables manufactured by DFE also meet this requirement. Contact DFE for more information.
8

2.3 SAFETY AND EMC REQUIREMENTS continued...
In addition to the transducer cable shielding, a shielded meter cable (DFE P/N: 721-0967, 15 ft., other lengths
available) and meter in enclosure (DFE P/N: 723-2682) are required to meet the EMC directive when an
accessory meter is used.
Cable shielding must be attached to the SHIELD connection on the terminal block, or to an appropriately
grounded enclosure. If you wish to assemble your own cables, contact DFE for assembly instructions.
! IMPORTANT: The DFE Model Ti18C you have purchased has been tested and meets the European Union's
Low Voltage Directive and EMC Directive only when installation is done correctly. To meet the EMC
Directive, a proper transducer installation, including shielded cables must be used. The following is a list of
cables available from DFE which meet this requirement:
721-0084 CN 3-conductor cable for type C, RS, THN, and UPB transducers. Use 2 cables, 1 cable per
transducer.
721-0964 CN 6-conductor cable for type RFA, LT, VNW, and TR and NW transducers.
721-0984 CN 6-conductor cable for NWI and TR2 (prior to Oct. 2010).
Other cables manufactured by DFE also meet this requirement. Contact DFE for more information.
In addition to the transducer cable shielding, a shielded meter cable (DFE P/N: 721-0967, 15 ft., other lengths
available) and meter in enclosure (DFE P/N: 723-2682) are required to meet the EMC directive when an
accessory meter is used.
Cable shielding must be attached to the SHIELD connection on the terminal block, or to an appropriately
grounded enclosure.
In addition to the above, the DFE Model Ti18C is UL/cUL LISTED only in its full enclosure version with cover.
2.4 INSTALLATION INSTRUCTIONS
Drill your mounting holes for the mounting style you will be using. Be sure to allow ample clearance beside
or in front of the unit for tool access and for wiring.
If you are using the vertical mounting style without the DIN rail option, drill and tap 2 holes 2.26" (57.4 mm)
apart vertically. Insert your M4 or #8 screws and tighten. When tight, reverse them out 3 turns. Place the
enclosure keyholes over the screw heads and lower unit into place. Tighten the screws. If you are using the
horizontal mounting style, mount the indicator circuit card to your panel. If an optional analog meter is used,
drill mounting holes per dimensions in Figure 4 or Figure 5.
9

2.5 TRANSDUCER VOLTAGE SELECTION (Refer to Figure 8)
The tension transducers are excited by either the standard 5 Vdc or, 10 Vdc with the Extended Range option
or LT (low tension) transducer.
!!CAUTION Do NOT use the 10 Vdc excitation unless the transducers are LT type transducers or have the
extended range option! The transducers MAY be DAMAGED!
Set the transducer excitation jumpers as follows:
5 Vdc - Jumper on JP1, pins 1-2. 10 Vdc (XRE) - Jumper on JP1, pins 2-3.
Figure 8 - TRANSDUCER VOLTAGE JUMPERS
2.6 TENSION AND METER OUTPUT SELECTION
Verify that your Ti17C or Ti18C is setup with the correct tension and meter output.
For Tension Output see jumpers JP2 and JP3 on the main board. (Figure 9 below). If 0-10V is required, place
jumpers on pins 1 to 2 on both JP2 and JP3. If 4-20mA is required, place jumpers on pins 2 to 3 on both JP2 and
JP3. NOTE: Both jumpers must be in the same position or incorrect operation will result.
Jumper JP4 determines the output level to the accessory meter on TB1 pins 4(+) to 6(-). The default position
(for use with 0-1mA meters) is the mA position. For 0-100μA meters, move the jumper to the μA position.
Figure 9 - TENSION and METER OUTPUT JUMPERS
10

2.7 ELECTRICAL CONNECTIONS - STANDARD
The indicator is designed to provide a 0-1mA damped meter output, and either a 0-10V isolated OR a 4-20mA
isolated output.
Make your wiring connections as follows:
1. The insulation rating of all line voltage wiring must be at least 600V
2. Keep line voltage wiring physically separated from signal wiring at the terminal block and at any other point
in the installation.
3. Connect cable shields to the Shield terminal on TB1 (Pin 11).
Figure 10 - STANDARD ELECTRICAL CONNECTIONS
11

2.8 TENSION LIMIT SWITCH EXTERNAL RELAY CONNECTIONS (Option)
Figure 11 - TLS EXTERNAL RELAY CONNECTIONS (Option)
12

SECTION 3 CALIBRATION and SETUP
3.1 PREPARATION
1. Select an appropriate calibration weight. Remember that the weight determines the value of web tension that
will produce full output of the Ti17C/Ti18C. A 15lb. weight will result in full output at 150 lbs. tension. (If
the optional cal. ratio of 25% is used, a calibration weight of 15 lbs. will result in a full output at 60 lbs.
tension). A spring scale can also be used, but absolute accuracy may be reduced.
2. Get a length of rope, wire, or cable of appropriate length. It must NOT be extensible (stretchy). This will
cause inaccurate calibration.
3. If you wish to use a calibration ratio of 25%, locate jumper JP6 on the PCB and move it to the 25% position.
3.2 MECHANICALLY ZERO THE TENSION METER
(This step is necessary only if the optional analog tension meter is to be used).
Turn off power to the Ti17C or Ti18C and observe whether the tension meter needle rests at 0. If not, turn the
adjustment screw on the rear of the meter as required to set the meter needle at 0 on the scale.
3.3 CALIBRATE THE OUTPUT FOR ACCURACY
Figure 12 - Ti17C and/or Ti18C PC BOARD (enlarged for clarity)
1. ZERO: Ensure nothing is hanging on or pressing on the tension roll (including the calibration rope). Press the
ZERO pushbutton on the unit front panel for at least 1 second. The unit will store the tension zero one
second after the button is pressed. The unit will flash the green LED (located to the left of JP1) to indicate
the zero has been stored. Release the button. The output will produce 0Vdc or 4mA depending upon the
output selected. The tension meter (if attached) will read zero.
13

3.3 CALIBRATE THE OUTPUT FOR ACCURACY continued...
2. CALIBRATION: Fasten one end of the rope in the machine and thread the other end around the transducer roll
in exactly the same path the web will take. Be sure the rope does not pass around any driven rolls, drag bars,
or anything else that can affect tension. Ideally the rope should hit an idler roll immediately before and after
the tension sensing roll. It does not have to pass over any other rollers once these three are strung. Refer to
Figure 13.
1. Attach the weight to the free end of the rope as shown in Figure 13. The weight should not touch
anything. Wait for the weight to stop swinging.
Figure 13 - WEB PATH
2. Press the CAL pushbutton on the unit front panel for at least 1 second. The unit will store the calibration
information one second after the button is pressed. The unit will flash the green LED (located to the left
of JP1) to indicate the calibration has been stored. The output will read 1.0Vdc or 5.6mA (For 10%
calibration percentage) or 2.5Vdc or 8mA (For 25% calibration percentage). The meter will read 10% of
full scale or 25% depending upon JP6 setting.
3. Remove the weight and observe the output. It should read 0Vdc or 4mA with nothing touching the
tension sensing roller, and if steps 2.1 to 2.3 above were done correctly.
3. METER DAMPING: If the optional analog meter is used, adjust the MTR DAMP potentiometer while the
machine is running to minimize needle movement. Damping only affects the 0-1mA meter output and not the
0-10Vdc or 4-20mA isolated outputs. (See Fig. 12).
4. DUAL CALIBRATION: For dual calibration only, connect a jumper between terminals 3 and 7 of TB1 and
repeat steps 1 (ZERO) through 2 (CALIBRATION). This sets zero and cal for circuit B. Note: You must
keep JP6 (Cal % jumper) in the same position for both calibration runs. When the TB1-3/7 jumper is
installed, “B” calibration is active. With CAL A/B tied to ground, ZERO and CAL button presses apply to
“B”. With nothing connected to CAL A/B, the unit defaults to “A” calibration.
5. AUTO-ZERO: If you want the unit to automatically re-zero every time power is applied, move jumper JP7 to
pins 2-3 (Auto-Zero ON). The default is Auto-Zero OFF (JP7 Pins 1-2). (See Fig. 12).
!CAUTION: Auto-Zero must be used with care. If power can be cycled to the unit (for any reason) while the
web is resting on the tension roller, Auto-Zero should NOT be activated. The unit will store the updated
tension input as the new zero on power up. This can damage the web as the actual tension would be higher
than reported by the unit.
6. Manual re-zero can be performed at any time. Simply ensure nothing is touching the tension roller, and press
ZERO until the green LED (to the left of JP1) flashes, then release. The zero setting is updated, and the
CALIBRATION is maintained.
!CAUTION: Do NOT press ZERO or CAL pushbuttons while the web is running. The unit will store ZERO
or CALIBRATION and the old settings will not be recovered. The only way to recover CALIBRATION is to
perform this procedure starting at step 1.
The output calibration is now complete.
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