Mark-10 7i Instruction Manual

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Model 7i

DIGITAL FORCE / TORQUE INDICATOR

User’s Guide

Model 7i Digital Force / Torque Indicator User’s Guide

Thank you…

Thank you for purchasing a Mark-10 Model 7i force/torque indicator, designed for use with interchangeable remote force and torque sensors. A 7i-sensor combination can be used with some Mark-10 test stands, grips, and data collection software.

With proper usage, we are confident that you will get many years of great service with this product. Mark-10 instruments are ruggedly built for many years of service in laboratory and industrial environments.

This User’s Guide provides setup, safety, and operation instructions. Dimensions and specifications are also provided. For additional information or answers to your questions, please do not hesitate to contact us. Our technical support and engineering teams are eager to assist you.

Before use, each person who is to use the 7i should be fully trained in appropriate operation and safety procedures.

TABLE OF CONTENTS

OVERVIEW .........................................................2

POWER ...............................................................4

SETUP ................................................................5

HOME SCREEN AND CONTROLS ...................7

DIGITAL FILTERS ..............................................9

SET POINTS .....................................................10

BREAK DETECTION ........................................11

OPERATING MODES .......................................13

DATA MEMORY AND STATISTICS ................21

FOOTSWITCH ..................................................23

COEFFICIENT OF FRICTION ..........................24

CUSTOM UNIT .................................................24

COMMUNICATIONS AND OUTPUTS .............25

CALIBRATION .................................................31

PASSWORDS ...................................................35

OTHER SETTINGS ...........................................36

SPECIFICATIONS ............................................39

Model 7i Digital Force / Torque Indicator User’s Guide

1 OVERVIEW

1.1 List of included items

Qty. Part No. Description

1 12-1049 Carrying Case 1 08-1022 AC adapter body with US, EU, or UK prong

1 08-1026 Battery (inside the indicator) 1 - Certificate of conformance 1 09-1165 USB cable 1 - Resource CD (USB driver, MESURTM Lite software,

MESUR

1.2 General Overview

From left to right: Model 5i indicator with Series R01 force sensor, Model 3i indicator with Series R02 force sensor, and Model 7i indicator with Series R50 torque sensor

and serial numbers are also identified in the Information screen of the indicator.

1.3 Accuracy and Resolution

Indicator accuracy must be combined with sensor accuracy to determine the total accuracy of the system. Since sensors may be used with either the 7i, 5i or 3i indicator, the accuracy of the indicator being used must be identified and taken into account, as follows:

Indicator Model Accuracy

7i / 5i ±0.1% of full scale 3i ±0.2% of full scale

The total system accuracy can be calculated by adding the sensor accuracy and indicator accuracy. Refer to the following examples:

gauge DEMO software, User’s Guide)

The 7i is a universal indicator designed for displaying measurements from interchangeable Mark-10 Plug &

Test

sensors. Sensor capacities are available from

0.25 to 10,000 lbF (1 N to 50 kN) of force, and from 10 ozFin to 5,000 lbFin (7 Ncm to 550 Nm) of torque. These sensors can be handheld or mounted to a fixture or test stand for more sophisticated testing requirements.

Plug & Test

sensors are used with either the 7i, 5i, or 3i indicators. They may be disconnected from one indicator and connected to another without the need for re-calibration or re-configuration. All such data is saved within a PCB located inside the smart connector.

The model number, serial number, and capacity of the sensor are identified in the rectangular label located on the Plug & Test

connector. The model

Model 7i Digital Force / Torque Indicator User’s Guide

Example 1

Model MR01-100 sensor with Model 7i Indicator

MR01-100

±0.15% of full scale

This translates into a fixed error of up to:

0.25% x 100 lbF = 0.25 lbF

Example 2

Model MR50-50Z sensor with Model 3i Indicator

MR50-50Z

±0.35% of full scale

This translates into a fixed error of up to:

0.55% x 50 ozFin = 0.275 ozFin

Because accuracy is defined as a percentage of full scale, the fixed error is possible anywhere on the scale from 0 to the capacity. As such, this value represents an increasingly large error as percentage of reading towards the low end of the scale. It is, therefore, recommended that a sensor is selected with capacity as close as possible to the expected load.

The resolution may be different for some sensors depending on whether a 7i, 5i, or 3i indicator is being used. For example, a Series R01 force sensor will display finer resolution when connected to a 7i indicator than when connected to a 3i indicator. Resolution information is shown in the sensors’ user’s guide.

1.4 Safety / Proper Usage

Read through the following safety instructions thoroughly before using the 7i with a sensor:

1. Note the sensor’s capacity before use and ensure that the capacity is not exceeded. Producing a load greater than the indicated safe overload value can damage the sensor. An overload can occur whether the indicator is powered on or off.

2. In order to extend the life of the sensor, avoid repetitive shock and impact loading.

3. When moving the sensor to another location, never lift from the cable or strain relief. This can cause damage to the sensor. Always lift the sensor housing itself.

4. Always ensure that load is applied axially with respect to the sensor.

5. Ensure that the sensor is kept away from water or any other electrically conductive liquids at all times.

6. The sensor and indicator should be serviced by a trained technician only. AC power must be disconnected and the indicator must be powered off before the housing is opened.

7. Always consider the characteristics of the sample being tested before initiating a test. A risk assessment should be carried out beforehand to ensure that all safety measures have been addressed and implemented.

±0.1% of full scale

±0.2% of full scale

Total

±0.25% of full scale

Total

±0.55% of full scale

Model 7i Digital Force / Torque Indicator User’s Guide

8. Typical materials able to be tested include many manufactured items, such as springs, electronic components, fasteners, caps, films, mechanical assemblies, and many others. Items that should not be used with the sensor include potentially flammable substances or products, items that can shatter in an unsafe manner, and any other components that can present an exceedingly hazardous situation when acted upon by a load. Always wear eye and face protection when testing, especially in aforementioned hazardous cases. Extra bodily protection should be worn if a destructive failure of a test sample is possible.

9. In aforementioned hazardous situations, it is strongly recommended that a machine guarding system be employed to protect the operator and others in the vicinity from shards or debris.

10. Sensors have threaded holes or chucks, designed for the mounting of grips, fixtures, or attachments. If any such accessories are used, ensure they are mounted firmly to prevent a potential safety risk to the operator and others in the vicinity. If using an accessory from a supplier other than Mark-10, ensure that it is constructed of suitably rugged materials and components. Similar precautions should be taken when mounting the sensor to a test stand, work bench, or other piece of equipment.

2 POWER

The 7i is powered either by an 8.4V NiMH rechargeable battery or by an AC adapter. Since the batteries are subject to self discharge, it may be necessary to recharge the unit after a prolonged period of storage. Plug the accompanying charger into the AC outlet and insert the charger plug into the receptacle on the indicator (refer to the illustration below). The battery will fully charge in approximately 8 hours.

USB connector

Power input jack

Serial connecto

Caution!

Do not use chargers or batteries other than supplied or instrument damage may occur.

If the AC adapter is plugged in, an icon appears in the lower left corner of the display, as follows:

If the AC adapter is not plugged in, battery power drainage is denoted in a five-step process:

1. When battery life is greater than 75%, the following indicator is present:

2. When battery life is between 50% and 75%, the following indicator is present:

3. When battery life is between 25% and 50%, the following indicator is present:

4. When battery life is less than 25%, the following indicator is present:

5. When battery life drops to approximately 2%, the indicator from step 4 will be flashing.

Several minutes after (timing depends on usage and whether the backlight is turned on or

Model 7i Digital Force / Torque Indicator User’s Guide

off), a message appears, “BATTERY VOLTAGE TOO LOW. POWERING OFF”. An audio tone will sound and the indicator will power off.

The indicator can be configured to automatically power off following a period of inactivity. Refer to the Other Settings section for details.

If battery replacement is necessary, it can be accessed by separating the two halves of the indicator. Refer to the Setup section for details.

3 SETUP

3.1 Connecting a sensor

The Plug & Test marked “Plug & Test into place with a “click”.

connector must be inserted into the receptacle of the 7i, 5i, or 3i indicator with the side

Technology” facing up (see Fig. 3.1). When fully inserted, the connector will lock

Fig. 3.1

Appropriate orientation of Plug & Test number, serial number, and load capacity may be found on the labels affixed to the connector.

connector. Sensor model

To release the connector, press both buttons on either side of the indicator housing to release the sensor (see Fig. 3.2). Pull the connector completely out of the indicator by holding the curved aluminum section. DO NOT pull on the cable or strain relief.

Fig. 3.2

Press both buttons on either side of the indicator housing to release the Plug

& Test

connector.

3.2 Sensor connector orientation

In order to accommodate a variety of testing requirements, the orientation of the Plug & Test

connector may be set up in either of the two positions shown below. To change the orientation, loosen the two captive screws on the back side of the housing, separate the two housing halves, rotate one half 180 degrees, and reassemble. Contact between the two halves is made by the spring pins and contact pads

Model 7i Digital Force / Torque Indicator User’s Guide

on the printed circuit boards.

3.3 Mounting to a plate The 7i can be mounted to a plate with four thumb screws fastened into the appropriate holes in the rear half of the housing. Refer to the Dimensions section for detailed hole information and locations.

Sensor connector

oriented up

Sensor connector

oriented down

3.4 Installing the USB driver

If communicating via USB, install the USB driver provided on the Resource CD. Installation instructions may also be found on the CD or may be downloaded from www.mark-10.com

Caution!

Install the USB driver before physically connecting the indicator to a PC with the USB cable.

Further instructions for configuring and using the indicator’s outputs are provided in the Communications and Outputs section.

Model 7i Digital Force / Torque Indicator User’s Guide

4 HOME SCREEN AND CONTROLS

4.1 Home Screen

No. Name Description 1 Measurement

direction indicator

2 Compression /

Clockwise peak

3 Tension /

Clockwise peak / Static COF

4 Primary reading /

Kinetic COF

5 Load bar

6 Units

– indicates compression direction (for force sensors)

– indicates tension direction (for force sensors)

– indicates clockwise direction (for torque sensors)

– indicates counter-clockwise direction (for torque sensors)

These indicators are used throughout the display and menu. The maximum measured compression or clockwise value. This value may be reset by pressing ZERO or by powering the indicator off and on. The maximum measured tension or counter-clockwise value. If the COF unit is selected, this represents the static coefficient of friction. May be reset by pressing ZERO or by powering the indicator off and on. The current displayed load reading. When the COF unit is selected, this reading represents the kinetic coefficient of friction upon completion of an Averaging sequence. See Operating Modes section for details. If a sensor is not plugged in, this value will be replaced by a message, as follows: SENSOR NOT CONNECTED Analog indicator to help identify when an overload condition is imminent. The bar increases either to the right or to the left from the midpoint of the graph. Increasing to the right indicates compression or clockwise load, increasing to the left indicates tension or counter-clockwise load. If set points are enabled, triangular markers are displayed for visual convenience. This indicator reflects the actual load, which may not correspond to the primary reading (depends on operating mode). The ZERO key does not reset the load bar. See Operating Modes section for details. The current measurement unit. Abbreviations are as follows:

Force units:

lbF – Pound-force ozF – Ounce-force kgF – Kilogram-force gF – Gram-force

689

2 3

Model 7i Digital Force / Torque Indicator User’s Guide

N – Newton kN – Kilonewton mN – Millinewton

Torque units:

lbFft – Pound-foot lbFin – Pound-inch ozFin – Ounce-inch kgFm – Kilogram-meter kgFmm – Kilogram-millimeter gFcm – Gram-centimeter Nm – Newton-meter Ncm – Newton-centimeter Nmm – Newton-millimeter Note: not all sensor models display all the above units. Refer to the capacity / resolution table for the respective sensor series for details.

7 Break Detection

On/Off

8 Mode

The letter “B” appears if the Break Detection function is enabled. Refer to the Break Detection section for details. The current measurement mode. Abbreviations are as follows: RT – Real Time PC – Peak Compression (for force sensors) PT – Peak Tension (for force sensors) PCW – Peak Clockwise (for torque sensors) PCCW – Peak Counter-clockwise (for torque sensors) A – Average Mode ET – External Trigger Mode See Operating Modes section for details about each of these modes

9 Number of stored

data points

10 Battery / AC

adapter indicator

11 Automatic data

output indicator

The number of stored data points in memory, up to 5,000. Displayed only if Memory Storage or Data Capture functions are used. Either the AC adapter icon or battery power icon will be shown, depending on power conditions. Refer to the Power section for details. If Auto Output has been enabled under Serial / USB Settings, this indicator is displayed. When automatic data output is occurring, the icon becomes animated. See Communications section for details.

12 High / low limit

indicators

Correspond to the programmed set points. Indicator definitions are as follows:

– the displayed value is greater than the upper load limit – the displayed value is between the load limits

– the displayed value is less than the lower load limit

13 Set points

The programmed load limit values. Typically used for pass/fail type testing. One, two, or no indicators may be present, depending on the configuration shown in the Set Points menu item.

4.2 Controls

Primary

Label Primary Function

Powers the indicator on and off. Press briefly to power on, press and hold to power off. Active only when the home screen is displayed.

ZERO

Zeroes the primary reading and peaks.

Enters the main menu.

Secondary

Label Secondary Function

ENTER

Various uses, as described in the following sections.

(UP) ESCAPE

Navigates up through the menu and sub-menus. Reverts one step backwards through the menu hierarchy.

Model 7i Digital Force / Torque Indicator User’s Guide

MODE

DATA

UNITS

4.3 Menu navigation basics

Most of the indicator’s various functions and parameters are configured through the main menu. To access the menu press MENU. Use the

selection is denoted with clear text over a dark background. Press ENTER to select a menu item, then use

item.

For parameters that may be either selected or deselected, press ENTER to toggle between selecting and deselecting. An asterisk (*) to the left of the parameter label is used to indicate when the parameter has been selected.

For parameters requiring the input of a numerical value, use the decrement the value. Press and hold either key to auto-increment at a gradually increasing rate. When the desired value has been reached, press ENTER to save the change and revert back to the sub-menu item, or press ESCAPE to revert back to the sub-menu item without saving. Press ESCAPE to revert one step back in the menu hierarchy until back into normal operating mode.

Refer to the following sections for details about setting up particular functions and parameters.

Toggles between measurement modes. Stores a value to memory, transmits the current reading to an external device, and/or initiates automatic data output, depending on setup. Toggles between measurement units.

Turns the LCD backlight on and off.

and keys to scroll through the items. The current

and again to scroll through the sub-menus. Press ENTER again to select the sub-menu

(DOWN) DELETE

DIRECTION

N/A

Navigates down through the menu and sub-menus. Enables and disables Delete mode while viewing stored data / shifts cursor to the right for certain functions. Reverses the display during calibration, and toggles between measurement directions while configuring set points and other menu items. N/A

and keys to increment or

5 DIGITAL FILTERS

Digital filters are provided to help smooth out the readings in situations where there is mechanical interference in the work area or test sample. These filters utilize the moving average technique in which consecutive readings are pushed through a buffer and the displayed reading is the average of the buffer contents. By varying the length of the buffer, a variable smoothing effect can be achieved. The selection of 1 will disable the filter since the average of a single value is the value itself.

To access digital filter settings, select Filters from the menu. The display appears as follows:

DIGITAL FILTERS

(1 = Fastest)

Current Reading 1 Displayed Reading 1

Two filters are available:

Model 7i Digital Force / Torque Indicator User’s Guide

Current Reading – Applies to the peak capture rate of the instrument.

Displayed Reading – Applies to the primary reading on the display.

Available settings: 1,2,4,8,16,32,64,128,256,512,1024,2048,4096,8192. It is recommended to keep the current reading filter at its lowest value for best performance, and the displayed reading filter at its highest value for best visual stability.

6 SET POINTS

6.1 General Information

Set points are useful for tolerance checking (pass/fail), triggering an external device such as a motorized test stand, or alarm indication in process control applications. Two limits, high and low, are specified and stored in the non-volatile memory of the instrument and the primary reading is compared to these limits. The results of the comparisons are indicated through the three outputs provided on the 15-pin connector, thus providing “under”, “in range”, and “over” signaling. These outputs can be connected to indicators, buzzers, or relays as required for the application.

6.2 Configuration

To configure set points, select Set Points from the menu. The screen appears as follows:

SET POINTS Upper Disabled * Upper Enabled

5.000 lbFin Lower Disabled * Lower Enabled

3.500 lbFin

Either one, two, or none of the set points may be enabled. To toggle between measurement directions, press the DIRECTION key.

If two set points have been enabled, they are displayed in the upper left corner of the display. If only one set point has been enabled, the word “OFF” appears in place of the value. If no set points have been enabled, the upper left corner of the display will be blank.

When set points are enabled, the following indicators are shown to the left of the primary reading:

Model 7i Digital Force / Torque Indicator User’s Guide

– the displayed value is greater than the upper

set point (NO GO HIGH)

– the displayed value is between the set points

(GO)

– the displayed value is less than the lower set

point (NO GO LOW)

Note: Set point indicators and outputs reference the displayed reading, not necessarily the current live load.

6.3 Set Point Outputs Schematic Diagram

6.4 Using Set Points to Control a Mark-10 Motorized Test Stand

When using set points to stop/cycle Mark-10 motorized test stands, the upper and lower set points must be set to opposite measuring directions. Both set points must be set, even if the intended application is to stop/cycle at only one of the set points. The opposite set point should be a value sufficiently large that it does not get triggered during the course of the test.

For certain Mark-10 test stands, the upper and lower set point directions are reversed.

7 BREAK DETECTION

The break detection function identifies when a sample has broken, clicked, slipped, or otherwise reached a peak load and then fell by a specified percentage drop. Upon detection of the break, the indicator can perform several automatic functions, depending on the mode in which break detection is enabled, as follows:

1. Transmit the peak reading (Auto Output).

2. Save the peak value to memory (Auto Storage).

3. Zero the primary and peak readings (Auto Zero).

4. Toggle a pin (for example, to stop crosshead movement on a Mark-10 motorized test stand).

Break detection functions and settings are configured from a central location, and apply to any mode in which it is enabled. Refer to the Operating Modes section for details on configuring each mode.

7.1 Configuration

Model 7i Digital Force / Torque Indicator User’s Guide

To enable Break Detection and configure the automatic functions, select Break Detection from the main menu. The display appears as follows:

BREAK DETECTION * Disabled

Enabled-End Test

Enabled-Abort + Break Settings + Auto Output + More

Select “+ More” for additional options:

BREAK DETECTION 2

* Auto Storage * Auto Zero Auto Zero Delay 3 sec.

Any combination of the above functions may be selected.

Function Description

Arms the break detection function. When enabled, the letter “B” appears on the

Enabled-End Test

home screen, between the Mode and Unit indicators. Refer to the Home Screen and Controls section for details. Applies to modes in which a Break Detect Stop Condition is specified.

Enabled-Abort

Break Settings Auto Output Auto Storage Auto Zero

Same as above, except applies to situations in which a premature break occurs before the specified Stop Condition is reached.

Refer to the following sub-sections for details.

Automatically stores the peak reading to memory. Automatically zeroes the display following data transmission and/or storage.

If tones are enabled, a tone will sound when the output, storage, and zero functions have occurred.

7.2 Break Settings

Select Break Settings from the main menu to configure the settings. The display appears as follows:

BREAK DETECTION

SETTINGS

Threshold: 5 % % Drop: 50 %

Model 7i Digital Force / Torque Indicator User’s Guide

Threshold

% Drop

Auto Zero Delay

Sets the percentage of full scale at which the break detection function becomes active. This threshold is provided to ignore peaks that can occur during sample loading and unloading. Available settings: 5–90%, in 5% increments. Sets the percentage drop from the peak reading at which the break is detected. Available settings: 5%–90%, in 5% increments. Sets the time delay before the primary and peak readings are zeroed. Auto zero can be disabled if required. Refer to the Auto Output Settings sub-section for details. Available settings: 1–10 sec., in 1 sec. increments, and 10–60 sec., in 5 sec. increments.

7.3 Auto Output Settings

Scroll to Auto Settings in the Break Detection menu and press ENTER to configure the auto output settings. Any combination may be selected. The display appears as follows:

AUTO OUTPUT

SETTINGS

RS232/USB Output Mitutoyo Output Output Pin: NONE

Parameter Description RS232/USB Output Mitutoyo Output

Output Pin

Automatically output the peak when the break (% drop) is detected. Automatically output the peak when the break (% drop) is detected. Automatically toggle the SP1, SP2, or SP3 pins (active low). If not required, select “NONE”. To stop most Mark-10 motorized test stands when a break occurs, specify SP2 if the break is in the tension/counter-clockwise direction, or SP1 for the compression/clockwise direction. Note: Because the same pins are also used for set points, the stand will stop at whichever condition occurs first.

8 OPERATING MODES

Caution!

In any operating mode, if the capacity of the instrument has been exceeded by more than 110%, the display will show “OVER” to indicate an overload. A continuous audible tone will be sounded until the MENU key has been pressed or the load has been reduced to a safe level.

Several operating modes are possible with the 7i, depending on whether force or torque sensors are used, as follows:

- Real Time (RT)

- Peak Compression (PC) or Peak Clockwise (PCW)

- Peak Tension / Static COF (PT) or Peak Counter-clockwise (PCCW)

- Average Mode / Kinetic Coefficient of Friction (AVG)

- External Trigger (ET)

- Data Capture (CAPT)

st/2nd

- 1

To cycle between the modes, press MODE while in the home screen. Refer to the following sections for details for each mode:

Peak (2PK)

Model 7i Digital Force / Torque Indicator User’s Guide

8.1 Real Time (RT) The primary reading corresponds to the live measured reading.

8.2 Peak Compression (PC) / Peak Clockwise (PCW) The primary reading corresponds to the peak compression or peak clockwise reading observed. If the actual load decreases from the peak value, the peak will still be retained in the primary reading area of the display. Pressing ZERO will reset the value.

8.3 Peak Tension / Static Coefficient of Friction (PT) / Peak Counter-clockwise (PCCW) This is the same as Peak Compression, but for tension or counter-clockwise readings. If the COF unit is selected, the reading in this mode represents the static coefficient of friction.

Note: The static COF is always displayed as the peak tension value in the upper right corner of the display.

8.4 Average Mode / Kinetic Coefficient of Friction (AVG)

Average mode is used to obtain an average load over a specified period of time. This reading also represents the kinetic coefficient of friction, if the COF unit is selected. Applications include measurement of peel force, COF, muscle strength, frictional force or torque, and other tests requiring time-averaged readings.

Before the parameters of Average Mode can be configured, it must be enabled. To do so, select

Average Mode from the menu, scroll to Enabled and press ENTER. The display

appears as follows:

AVERAGE MODE

Disabled * Enabled + Settings + Auto Settings Out

ut Pin: NONE

Then, scroll to Settings and press ENTER to configure the parameters. The parameters are as follows:

AVERAGE MODE SETTINGS

Initial Delay

0.0

Averaging Time

5.5 Trigger Load

1.200 lbFin

Model 7i Digital Force / Torque Indicator User’s Guide

Parameter Description Initial Delay Averaging Time Trigger Load

The time delay, in seconds, before the averaging sequence commences. The time duration, in seconds, of the averaging sequence. The minimum load required to start the averaging sequence. Toggle between measuring directions by pressing the DIRECTION key. Initial delay follows the trigger load.

Upon completion of an averaging sequence, several functions can occur, as configured in the Auto Settings section:

AUTO SETTINGS * RS232/USB Output * Mitutoyo Output * Memory Storage * Auto Zero Auto Zero Delay

5 sec.

Parameter Description

RS232/USB Output

Automatically output the average via RS-232 or USB at the completion of the averaging sequence.

Mitutoyo Output

Automatically output the average via Mitutoyo (Digimatic) at the completion of the averaging sequence.

Memory Storage Auto Zero

Automatically store the average at the completion of the averaging sequence. Automatically zero the reading at the completion of the averaging sequence. This re-arms the indicator for a new averaging sequence as if ZERO has been pressed.

Auto Zero Delay

The amount of time before the auto-zero occurs, in seconds: Available settings: 1-10 sec., in 1 sec. increments, and 10-60 sec., in 5 sec.

increments.

Output Pin

Automatically toggle the SP1, SP2, or SP3 pins (active low). If not required, select “NONE”. To stop a Mark-10 motorized test stand when averaging is completed, specify SP2 if moving in the tension/counter-clockwise direction, or SP1 for the compression/clockwise direction. Note: Because the same pins are also used for set points, the stand will stop at whichever condition occurs first.

After the parameters have been configured and the menu has been exited, press MODE until AVG is displayed. Then press ZERO. Average mode is now armed, and the averaging sequence will commence when the trigger load has occurred. The current status of the averaging sequence is displayed below the primary reading, as follows:

Step Status Description

1 TRIG WAIT The trigger load has not yet occurred. 2 INIT DLY The initial delay is currently taking place. 3 AVERAGING The indicator is collecting readings. The status will be flashing until averaging has

been completed.

4 AVRG DONE Averaging has been completed. The average load is displayed in the primary

reading.

At the completion of the averaging sequence, the peak values are retained until ZERO is pressed. Another averaging sequence may be started after ZERO has been pressed (or auto-zeroed). To exit Average mode, press MODE and select the desired measuring mode.

Model 7i Digital Force / Torque Indicator User’s Guide

9.5 External Trigger (ET)

This mode of operation is useful for measuring electrical contact activation force as well as synchronization of multiple instruments for a “snapshot” view of applied forces. It is possible to capture the reading with a normally open contact (high to low transition of the trigger signal) or a normally closed contact (low to high transition). Certain Mark-10 motorized test stands may be automatically stopped when an external trigger has occurred.

Before the parameters of External Trigger Mode can be configured, it must be enabled. To do so, access the main menu, select External Trigger, scroll to one of the four available options and press ENTER. The options are as follows:

EXTERNAL TRIGGER * Disabled Momentary Hi->Lo Momentary Lo->Hi Maintained High Maintained Low + More

Select “+ More” for additional options:

EXTERNAL TRIGGER 2

+ Auto Settings Output Pin: NONE

Option Description

Momentary High  Low

The display will freeze the captured reading until ZERO is pressed. Applies to a high to low transition of the trigger signal.

Momentary Low  High

The display will freeze the captured reading until ZERO is pressed. Applies to a low to high transition of the trigger signal.

Maintained High

The display will show the captured reading only for as long as a high signal is maintained.

Maintained Low

The display will show the captured reading only for as long as a low signal is maintained.

Auto Settings

Functions exactly as described in Section 5.4. These parameter values are shared between Averaging and External Trigger modes.

Output Pin

Automatically toggle the SP1, SP2, or SP3 pins (active low). If not required, select “NONE”. To stop a Mark-10 ESM301 test stand when an external trigger occurs, specify SP2 if moving in the tension/counter-clockwise direction, or SP1 for the compression/clockwise direction. Note: Because the same pins are also used for set points, the stand will stop at whichever condition occurs first.

After the parameters have been configured and the menu has been exited, press MODE until ET is displayed. External Trigger mode is now armed. Refer to the pin diagram in the Communications and Outputs section for connection information.

To exit External Trigger mode, press MODE and select the desired measuring mode.

Model 7i Digital Force / Torque Indicator User’s Guide

9.5.1 External Trigger Schematic Diagram

+3.3V

SWITCH UNDER TEST

(NO OR NC)

USER - SUPPLIED

BAT54SLT1G

GND

330 Ohm

22k

TO MICROPROCESSOR

0.1 uF

GND

GAUGE

Note: Custom cabling is required to connect to a switch, or to connect a switch and a Mark-10 test stand simultaneously.

9.6 Data Capture (CAPT) This mode of operation is used to capture and store continuous data in the indicator’s memory. The capture frequency can be adjusted to accommodate quick-action as well as longer duration tests. Saved data can be downloaded in bulk via USB or RS-232.

9.6.1 Configuration

After Data Capture has been enabled, it may be selected by pressing the MODE key until CAPT is displayed. The display appears as follows:

DATA CAPTURE * Enabled Period (H:M:S.x) 00 :00 :00.00007 + Start Condition + Stop Condition + Auto Settings

Function Description Enabled Period

If enabled, CAPT appears as one of the operating modes. The capture period may be adjusted by pressing the

and keys to change

the value of the hours (H), minutes (M), seconds (S), and fractions of seconds (x) fields. Press the key to advance to the next field.

Available settings: Hours: 0-24, Minutes: 0-59, Seconds: 0-59,

Fraction of Seconds: 0.00007-0.99995, in 0.00007 (70 μS) increments.

Start Condition Auto Settings

See following sub-sections for details.

Note: For best performance, it is recommended to keep the current reading filter at its lowest value. See Digital Filters section for details.

9.6.2 Start Condition

Data capture is initiated when the Start Condition has been triggered. Several triggers are available, as shown below:

Model 7i Digital Force / Torque Indicator User’s Guide

START CONDITION

Momentary HiLo Momentary LoHi * Maintained High Maintained Low + More

Select “+ More” for additional options:

START CONDITION 2

Start Load

3.500 lbFin

* DATA Key

Function Data capture is initiated when: Momentary HiLo Momentary LoHi Maintained High

See External Trigger sub-section for details for each of these functions.

An external trigger occurs.

Maintained Low Start Load

The desired trigger load is reached. Toggle between measurement directions by pressing the DIRECTION key.

DATA Key

The DATA key is manually pressed.

9.6.3 Stop Condition

Data capture is automatically terminated when the Stop Condition has been reached. Several conditions are available, as shown below:

STOP CONDITION

* Samples: 10 Stop Load

2.500 lbFin Memory Full DATA Key

Function Data capture terminates when: Samples Stop Load Memory Full DATA Key

The desired number of samples (data points) has been captured. The desired load has been reached. 5,000 data points have been captured. The DATA key is manually pressed.

When data capture has stopped, the data may be automatically transmitted in bulk to a PC program such as MESUR

gauge (see the following sub-section for details). Data may also be transmitted manually

through the Memory section.

Note 1: If the Stop Condition does not occur, data capture stops automatically when the memory is full.

Model 7i Digital Force / Torque Indicator User’s Guide

Note 2: Data capture may be manually stopped at any time by pressing the ZERO key. A

message appears at the bottom of the screen: “CAPTURE CANCELLED”.

The next Data Capture sequence cannot occur until the ZERO key is pressed or until the indicator is automatically re-armed (see the following sub-section for details). If another Data Capture sequence is initiated before the memory is cleared, these data points are appended to the existing data stored in memory.

9.6.4 Auto Settings

The following functions can occur automatically upon termination of data capture:

AUTO SETTINGS

Transmit XMIT & Clear Mem Re-Arm

Function Description Transmit XMIT & Clear Mem Re-Arm

Transmit all saved data via USB or RS-232. Transmit all saved data via USB or RS-232, and clear the memory. Re-arm the indicator for the next Data Capture sequence.

9.7 First / Second Peak (2PK) This function is designed to accurately capture first and second peaks which can occur in torque tool testing, materials testing and other applications.

9.7.1 Configuration

Several functions can be performed automatically upon detection of the second peak:

1. Transmit the first peak reading and/or…

2. Transmit the second peak reading and/or…

3. Save the first peak value to memory and/or…

4. Save the second peak value to memory and/or…

5. Zero the peak readings and/or…

6. Toggle an output pin

These automatic functions can help automate and expedite testing processes. If tones are enabled, an audible tone will sound when the output, storage, and zero functions have occurred. In order for First / Second Peak detection to be active, the appropriate operating mode must be selected. See the Operating Modes section for details. The display appears as follows:

FIRST/SECOND PEAK * Enabled + Peak Settings + Auto Output * Auto Store PK1 * Auto Store PK2 * Auto Zero

Any combination of the above functions may be selected.

Function Description

Enabled

If enabled, 2PK appears as one of the operating modes. In the main display, the

Model 7i Digital Force / Torque Indicator User’s Guide

Peak readings will reference the first and second peaks – first peak on top, second peak below. Refer to the Home Screen & Controls section for details.

Peak Settings Auto Output Auto Store PK1 Auto Store PK2 Auto Zero

See following sub-sections for details.

Automatically stores the first peak reading to memory. Automatically stores the second peak reading to memory. Automatically zeroes the display following data transmission and/or storage.

9.7.2 Peak Settings

The display appears as follows:

PEAK SETTINGS

Threshold 1: 5 %

% Drop 1: 10 % Threshold 2: 5 % % Drop 2: 10 % Auto Zero Delay 3 sec.

Threshold 1

Sets the percentage of full scale at which the first/second peak detection feature becomes active. This threshold is provided to ignore peaks that can occur during sample loading and unloading. Available settings: 1–90%, in 1% increments between 1–5%, and in 5% increments between 5–90%.

% (Percentage) Drop 1

Identifies the first peak via detection of a specified percentage drop from peak. Available settings: 5–95%, in 5% increments.

Threshold 2

Same as with Threshold 1, but refers to a percentage increase above the first peak.

% (Percentage) Drop 2 Auto Zero Delay

Same as Percentage Drop 1 but for the second peak. Sets the time delay before the peak readings are zeroed. Available settings:

1–10 sec. in 1 sec. increments, and 10–60 sec. in 5 sec. increments.

Thresholds and percentage drops are illustrated below:

Model 7i Digital Force / Torque Indicator User’s Guide

9.7.3 Auto Output Settings

Scroll to Auto Output Settings and press ENTER to select the desired automatic outputs. Select RS232/USB and/or Mitutoyo outputs, and select First and/or Second peaks, and an Output Pin, if desired. The display appears as follows:

AUTO OUTPUT

SETTINGS RS232/USB Output Mitutoyo Output First Peak Second Peak Output Pin: NONE

Parameter Description RS232/USB Output Mitutoyo Output First Peak Second Peak Output Pin

Automatically output the selected peak(s) after the 2 Automatically output the selected peak(s) after the 2 Automatically output the first peak. Automatically output the second peak. Automatically toggle the SP1, SP2, or SP3 pins (active low). If not required, select “NONE”. To stop a Mark-10 ESM301 test stand when a 1

peak is detected.

st/2nd

peak capture sequence is completed, specify SP2 if moving in the tension/counter-clockwise direction, or SP1 for the compression/clockwise direction. Note: Because the same pins are also used for set points, the stand will stop at whichever condition occurs first.

10 DATA MEMORY AND STATISTICS

The 7i has a storage capacity of 5,000 data points. Readings may be stored, viewed, and output to an external device. Individual, or all data points may be deleted. Statistics are calculated for the data in memory.

To enable memory storage, select DATA Key from the menu, then scroll to Memory Storage and press ENTER. Then exit the menu. In the home screen, the data record number 0000 appears below the primary reading. Press DATA at any time to save the displayed reading. The record number will increment each time DATA is pressed. If DATA is pressed when memory is full the message “MEMORY FULL” will be flashed at the bottom of the display and a double audio tone will be sounded.

To view, edit, and output stored readings and statistics, select Memory from the menu. The screen appears as follows:

MEMORY

View Data

View Statistics Output Data Output Statistics Output Data & Stats Clear All Data

10.1 View Data

All the saved data points may be viewed. The record number is displayed, along with the corresponding value and currently set unit of measurement. Any readings may be deleted individually. To do so, scroll to

Model 7i Digital Force / Torque Indicator User’s Guide

the desired reading and press DELETE. The letter “D” appears to the left of the record number, indicating that the indicator is in Delete mode, as follows:

0001 2.458 lbFin 0002 2.224 lbFin 0003 2.446 lbFin 0004 1.890 lbFin D 0005 2.098 lbFin 0006 1.998 lbFin 0007 2.042 lbFin

Press ENTER to delete the value. To exit Delete mode, press DELETE again. Any number of readings may be individually deleted, however, all readings may also be cleared simultaneously. Refer to the Clear

All Data section for details.

10.2 Statistics

Statistical calculations are performed for the saved values. Calculations include number of readings, minimum, maximum, mean, and standard deviation.

10.3 Output Data

Press ENTER to output data to an external device. The display will show, “SENDING DATA…”, then “DATA SENT”. If there was a problem with communication, the display will show, “DATA NOT SENT”. Saved data can be transmitted to a data collection program such as MESUR

gauge. Refer to their

respective user’s guides for details.

10.4 Output Statistics

Press ENTER to output statistics to an external device. The display will show, “SENDING STATS…”, then “STATS SENT”. If there was a problem with communication, the display will show, “STATS NOT SENT”.

10.5 Output Data & Stats Press ENTER to output data and statistics to an external device. The display will show, “SENDING DATA”, then “SENDING STATS…”, then “DATA SENT”, then “STATS SENT”. If there was a problem with communication, the display will show, “DATA NOT SENT” and/or “STATS NOT SENT”.

10.6 Clear All Data Press ENTER to clear all data from the memory. A prompt will be shown, “CLEAR ALL DATA?”. Select Yes to clear all the data, or No to return to the sub-menu.

Shortcut for clearing all data: In the main menu, highlight Memory and press DELETE. The same prompt will be shown as above.

For output of data and/or statistics, RS-232 or USB output must be enabled. Data formatting is <CR><LF> following each value. Units can be either included or excluded. Output of data via the Mitutoyo output is possible; however, output of statistics is not. Refer to the Communications and Outputs section for details.

Note: Data is not retained while the indicator is powered off. However, the indicator protects against accidental or automatic power-off. If manually powering the instrument off, or if the inactivity time limit for the Automatic Shutoff function has been reached, the following warning message appears:

Model 7i Digital Force / Torque Indicator User’s Guide

*** WARNING ***

DATA IN MEMORY

WILL BE LOST

CANCEL

POWER OFF

If no option is selected, this screen will be displayed indefinitely, or until battery power has been depleted.

11 FOOTSWITCH

This feature allows the indicator to execute up to three functions in sequence, separated by an optional delay, when the External Trigger input (pin 14 on the I/O connector) transitions from a high level to a low level. The ET input has an internal pull-up resistor. One suggested method for triggering the footswitch sequence would be to provide a relay or contact closure to ground.

To enable the footswitch settings, select Footswitch from the menu. The display appears as follows:

FOOTSWITCH Enabled Step 1: NONE Delay 1: 0 sec. Step 2: NONE Delay 2: 0 sec. + More

Select “+ More” for additional options:

FOOTSWITCH 2

Step 3: NONE Active Low (NO) Active High (NC)

Function Description Enabled Step 1 / 2 / 3

Delay 1 / 2 /3

Active Low (NO) Active High (NC)

Press ENTER to enable, and an asterisk appears. Set the desired command. Available commands: ?, ?C, ?PT, ?PC, ?A, Z, CLR, PM, DATA Key, and NONE. DATA Key simulates a press of the DATA key. Explanations for other commands may be found in the Communications and Outputs section. Set the desired delay between commands. Available settings: 0 – 5 sec. in 1 sec. increments, and 5 – 60 in 5 sec. increments. Normally open contact between pin and ground. Normally closed contact between pin and ground.

Model 7i Digital Force / Torque Indicator User’s Guide

12 COEFFICIENT OF FRICTION

The 7i, with an appropriate force sensor, can determine the static and kinetic coefficients of friction (COF) between two materials through the Averaging and peak tension capture functions. The process for determining COF requires dragging a block of a known mass (usually 200 g) over a surface at a constant speed. The force required to do so is divided by the weight of the block. For example, a force of 100 gF divided by 200 g equals 0.5 COF.

Although many COF testing applications require a sled weight of 200 g, the indicator allows the user to change the sled weight to comply with other requirements. To modify the sled weight, select COF from the menu. The display appears as follows:

COF

Enabled Sled Weight Unit g Sled Weight

200.0

Available sled weight settings: 10% to 100% of the sensor’s capacity

Motorized test stands and suitable fixtures are recommended for COF measurement applications.

Recommended products: ESM301 test stand and G1086 COF fixture

13 CUSTOM UNIT

A user-defined unit of measurement may be configured for special applications. A base unit is specified, along with a multiplier, and 5-character name. Typical applications:

1. To measure the torque produced by pressing on a lever in a mechanical assembly, configure the multiplier based on the length of the lever, thereby converting a unit such as N into Ncm.

2. To measure the pressure produced by a circular compression plate on a foam sample, configure the multiplier based on the area of the plate, thereby converting a unit such as lbF into psi.

To access this feature, select Custom Unit from the menu. The display appears as follows:

CUSTOM UNIT

Enabled Base Unit: lbF Unit Name: UNITx Multiplier

1.000

Model 7i Digital Force / Torque Indicator User’s Guide

Function Description

Enabled

Base Unit Unit Name

Multiplier

Press ENTER to enable, and an asterisk appears. After exiting the menu, the custom unit appears as one of the available units. Select any available standard unit.

Specify up to 5 alphanumeric characters, using the key to advance to the next character, and the character “_” refers to a space. Note: Unit names with the same abbreviations as other standard units are not allowed. If a disallowed name is entered, a warning message appears. Select a value relative to the base unit. Available values: 0.001 – 1,000 Note: Lowest measured value must correspond to a resolution of at least 0.00001. Highest measured value must correspond to a maximum displayed reading of 500,000.

and keys to scroll through the available characters. The

14 COMMUNICATIONS AND OUTPUTS

Communication with the 7i indicator is achieved through the micro USB or 15-pin serial ports located at the bottom of the instrument, as shown in the illustration in the Power section. Communication is possible only when the indicator is in the main operating screen (i.e. not in a menu or configuration area).

14.1 Serial / USB

To set up RS-232 and USB communication, select Serial/USB Settings from the menu. The screen appears as follows:

SERIAL/USB SETTINGS

* RS232 Selected USB Selected + Baud Rate + Data Format + Auto Out

Select either RS-232 or USB input (output is always active for both the USB and RS-232 ports). RS-232 must be selected when communicating through a Mark-10 test stand controller. When communicating from the indicator directly to a PC or data collector, either RS-232 or USB can be selected as required. Press DATA to transmit individual data points or to commence an automatic output sequence (see Automatic Output sub-section for details). Single point or continuous data may also be requested via ASCII commands from an external device (see Command Set sub-section for details).

Communication settings are permanently set to the following:

Data Bits: 8 Stop Bits: 1 Parity: None

Other settings are configured as follows:

14.1.1 Baud Rate

Select the baud rate as required for the application. It must be set to the same value as the receiving device. When communicating with a Mark-10 test stand controller, the baud rate must be set to 9,600.

14.1.2 Data Format

Select the desired data format. The screen appears as follows:

Model 7i Digital Force / Torque Indicator User’s Guide

DATA FORMAT

* Numeric + Units Numeric Only Invert Polarity Omit Polarity

Selection Description

Numeric + Units

Output format includes the value and unit of measure. Compression/clockwise values have positive polarity, tension/counter-clockwise values have negative polarity.

Numeric Only Invert Polarity

Output format includes the value only. Polarity same as above. Compression/clockwise values have negative polarity, tension/counter-clockwise values have positive polarity. May be selected in addition to the Numeric + Units / Numeric Only selection.

Omit Polarity

Both directions are formatted with positive polarity. May be selected in addition to the Numeric + Units / Numeric Only selection.

14.1.3 Automatic Output

The indicator has the ability to output data continuously via RS-232 or USB. To enable automatic output, select Auto Output from the Serial/USB Settings sub-menu. The screen appears as follows:

AUTO OUTPUT

* Disabled Enabled Readings / sec. 10

Select Enabled to activate automatic output. The number of readings per second can be set to 1, 2, 5, 10, 25, 50, 125, or 250. The capabilities of the receiving device should be considered when selecting the data output rate.

After the settings have been saved, revert to the home screen. An icon appears in the lower left corner of the display, as follows:

This indicates that automatic data output has been armed. Automatic output of data may be initiated by pressing DATA or by sending the appropriate ASCII command from an external device (see Command Set sub-section for details). The icon will become animated, signaling that automatic output is occurring. Press DATA again to end the data transmission.

14.2 Mitutoyo BCD settings This output is useful for connection to data collectors, printers, multiplexers, or any other device capable of accepting Mitutoyo (Digimatic) BCD data. Individual data points may be transmitted by pressing DATA or by requesting it from the Mitutoyo communication device (if available). To enable Mitutoyo output, select the desired format – either with polarity or without polarity. The screen appears as follows:

Model 7i Digital Force / Torque Indicator User’s Guide

MITUTOYO BCD

* Disabled Enabled * Without Polarity With Polarity

14.3 Analog Output

This output can be used for chart recorders, oscilloscopes, data acquisition systems, or any other compatible devices with analog inputs. The output produces ±1 volt at full scale of the instrument. The polarity of the signal is positive for compression and negative for tension.

14.4 DATA Key Functions The DATA key can be configured to perform several functions. To configure the DATA key, select DATA Key from the menu. The display appears as follows:

DATA KEY * RS232/USB Output Mitutoyo Output Memory Storage * Auto Zero

Auto Zero Delay

5 sec.

Selection Function when pressing DATA RS232/USB Output Mitutoyo Output Memory Storage Auto Zero

Outputs data via the serial and USB ports Outputs data via Mitutoyo (Digimatic) Stores a reading to memory (refer to the Memory section for details) Automatically zero the reading as if the ZERO key has been pressed after the reading is output and/or it is stored in memory.

Auto Zero Delay

The amount of time before the auto-zero occurs, in seconds: 1 – 10 seconds in 1 second increments, and 10 – 60 seconds in 5 second increments.

Any combination of the above functions may be selected.

Model 7i Digital Force / Torque Indicator User’s Guide

14.5 I/O Connector Pin Diagram (DB-9HD-15 female)

Pin No. Description

1 Signal Ground --2 * Tension / Counter-clockwise

Overload *

3 RS-232 Receive Input

Input /

Output

Output *

4 RS-232 Transmit Output 5 +12V DC Output 6 Analog Output Output 7 * Compression / Clockwise

Output *

Overload *

8 Mitutoyo Clock or

9 Mitutoyo Data or

10 Mitutoyo Request or

11 ** Set Point Pin 1 (SP1)** Output ** 12 ** Set Point Pin 2 (SP2)** Output ** 13 ** Set Point Pin 3 (SP3)** Output ** 14 External Trigger Input 15 * Mitutoyo Ready or

Output Bit 2 (mutually exclusive)

Output Bit 0 (mutually exclusive)

Input Bit 3 (mutually exclusive)

Output Bit 1 (mutually exclusive) *

Output

Input

Output *

* Maximum voltage: 40V. ** The output assignments depend on several factors described in the table below. Output functions always reference the primary reading on the display, regardless of the current mode.

Load Pin 11 Pin 12 Pin 13

Upper and Lower Set Points are C / CW

Greater than or equal to upper set point On Off Off Between upper and lower set points Off Off On Less than or equal to lower set point Off On Off

Upper and Lower Set Points are T / CCW

Greater than or equal to upper set point Off On Off Between upper and lower set points Off Off On Less than or equal to lower set point On Off Off

Upper Set Point is C / CW, Lower Set Point is T / CCW

Greater than or equal to upper set point, in C / CW Off On Off Between upper and lower set points Off Off On Greater than or equal to lower set point, in T / CCW On Off Off

Upper Set Point is T / CCW, Lower Set Point is C / CW

Greater than or equal to upper set point, in T / CCW Off On Off Between upper and lower set points Off Off On Greater than or equal to lower set point, in C / CW On Off Off

C = compression, T = tension, CW = clockwise, CCW = counter-clockwise

Model 7i Digital Force / Torque Indicator User’s Guide

14.6 Command Set / Gauge Control Language 2 (GCL2)

The 7i may be controlled by an external device through the RS-232 or USB channels. The following is a list of supported commands and their explanations. All commands must be terminated with a Carriage Return character or with a Carriage Return/Line Feed combination. The indicator responses are always terminated with a Carriage Return/Line Feed.

Request Readings

? Request the displayed reading (dependant on operating mode) ?C Request the current (real time) reading ?CW Request the peak clockwise reading ?CCW Request the peak counter-clockwise reading ?PT Request the peak tension reading (corresponds to static COF) ?PC Request the peak compression reading ?ET Request the reading obtained during the External trigger mode ?A Request the average reading obtained during the Average mode (corresponds to kinetic COF) ?P1 Request 1

peak reading

Units LB Switch unit to pound-force OZ Switch unit to ounce-force KG Switch unit to kilogram-force G Switch unit to gram-force N Switch unit to Newton MN Switch unit to milli-Newton KN Switch unit to kilo-Newton LBFT Switch unit to pound-foot LBIN Switch unit to pound-inch OZIN Switch unit to ounce-inch KGM Switch unit to kilogram-meter KGMM Switch unit to kilogram-millimeter GCM Switch unit to gram-centimeter NM Switch unit to Newton-meter NCM Switch unit to Newton-centimeter NMM Switch unit to Newton-millimeter COF Switch units to Coefficient of Friction CU Switch to user-defined custom unit

COFE Enable Coefficient of Friction unit COFD Disable Coefficient of Friction unit CUE Enable user-defined custom unit CUD Disable user-defined custom unit

Basic Functions (available measurement directions depend on the sensor used) CUR Select Current (real time) mode PT Select Peak Tension mode PC Select Peak Compression mode PCW Select Peak Clockwise mode PCCW Select Peak Counter-clockwise mode FSPK Select First / Second Peak mode (must first be enabled in the menu) CAPT Select Data Capture mode (must first be enabled in the menu) CLR Clear peaks Z Zero display and perform the CLR function

Model 7i Digital Force / Torque Indicator User’s Guide

Filters

FLTPn Digital filter for displayed readings FLTCn Digital filter for current readings n= 0-10, filter = 2

, ex: n=0= no filter, n=10=1024 samples averaged

Memory & Statistics MEM Transmit all stored readings STA Transmit statistics CLRMEM Delete all stored readings from memory

Set Points

SPHD Disable high set point SPLD Disable low set point SPHn High set point. n=value (+ for C/CW, - for T/CCW) SPLn Low set point. n=value (+ for C/CW, - for T/CCW)

USB/RS-232 Communication

FULL USB/RS-232 transmission with units NUM USB/RS-232 transmission without units (only numeric values) AOUTn Auto-transmit n times per second n=1, 2, 5, 10, 25, 50, 125, 250. 0=disabled

Note: n = 1 = yields 50 times per second. This is provided for backward compatibility with the legacy indicator model BGI.

IPOLn Invert polarity of output. n=1=invert polarity. n=0=normal (default)

Note: Normal polarity is positive for compression/CW and negative for

tension/CCW. OPOLn Omit polarity of output. n=1=omit polarity. n=0=include polarity (default) Note: The “+” sign is always omitted. A “–“ sign is sent when polarity is enabled.

Mitutoyo Communication MIT Enable Mitutoyo output MITD Disable Mitutoyo output POL Mitutoyo output with polarity (+ for compression, - for tension) NPOL Mitutoyo output without polarity (absolute value) PM Print/send data to a Mitutoyo-compatible device

Averaging

A Enable Average mode AD Disable Average mode AM Select Average mode (if enabled) for primary reading TRFn Trigger load. n=value (+ for C/CW, - for T/CCW) DELn Initial delay. n=0.1-300.0 seconds ATn Average time. n=0.1-300.0 seconds

External Trigger ETH Enable high level-triggered External trigger mode ETL Enable low level-triggered External trigger mode ETHL Enable reading captured on a high to low transition ETLH Enable reading captured on a low to high transition ETD Disable External trigger mode

Input / Output Bits

Sn Set output bit (open drain, pull to ground). n=0, 1, 2 Cn Clear output bit. n=0, 1, 2 Rn Read current status of output bit or level of input pin. n=0, 1, 2 ,3

Personality

Model 7i Digital Force / Torque Indicator User’s Guide

RN Read product name RM Read model number RV Read firmware version number RS Read serial number Other Commands AOFFn Auto-shutoff. n=0-30 minutes. 0=auto shutoff disabled SAVE Save current settings in nonvolatile memory LIST List current settings and status

Following is an example LIST output: V1.00;LBF;CUR;FLTC8;FLTP1;AOUT00;AOFF5;FULL;IPOL0;OPOL0;MIT;POL;B0

All fields are separated by “;”. The first field shows the firmware version, the last field shows the remaining battery power (B0=full charge, B3=minimum power). All other fields show the status of settings and features using the same abbreviations as the commands to set them.

Any detected errors are reported back by means of the following error codes:

*10 Illegal command *11 Not applicable *21 Invalid specifier *22 Value too large

15 CALIBRATION

15.1 Initial Physical Setup

The sensor should be mounted vertically to a test stand or fixture rugged enough to withstand a load equal to the full capacity of the sensor. Certified deadweights, torque arms/wheels, and/or master load cells should be used, along with appropriate mounting brackets and fixtures. Caution should be taken while handling such equipment.

15.2 Calibration Procedure

In the interests of simplicity and brevity, the following instructions use force terminology only. Such wording is displayed only when a force sensor is being calibrated. When a torque sensor is being calibrated, the terms COMPRESSION and TENSION are replaced by CLOCKWISE and COUNTER- CLOCKWISE, respectively.

1. Select Calibration from the menu. The display appears as follows:

CALIBRATION

Enter # cal points

(1 to 10)

Compression:

Tension:

The sensor can be calibrated at up to 10 points in each direction. Enter the number of calibration points for each direction (compression and tension or clockwise and counter-clockwise). At least one point must be selected for each direction. For single-direction sensors such as Mark-10’s Series R02, only one direction is allowed.

Note: To achieve the accuracy specification of ±0.1% + sensor, it is recommended to calibrate the sensor at 5 or more even increments in both the tension and compression directions. For

Model 7i Digital Force / Torque Indicator User’s Guide

example, a sensor with capacity of 10 lbF should be calibrated at 2, 4, 6, 8, and 10 lbF loads in each direction.

2. To escape the Calibration menu at any time, press ESCAPE. The display appears as follows:

CALIBRATION

NOT COMPLETE

Cancel Exit w/o saving

Selecting “Cancel” will revert back to the Calibration setup. Selecting “Exit w/o saving” will return to the menu without saving changes.

3. After the number of calibration points has been entered, press ENTER. The display appears as follows:

CALIBRATION

OFFSET

Place sensor horizontally, then press ZERO.

4. Place the force sensor horizontally on a level surface free from vibration, then press ZERO. The indicator will calculate internal offsets, and the display appears as follows:

CALIBRATION

OFFSET

Please wait…

CALIBRATION

OFFSET

Sensor passed Analog passed

CALIBRATION

OFFSET

Sensor failed Analog failed

If failed:

5. The following screen appears after the offsets have been calculated:

CALIBRATION

COMPRESSION

Attach necessary weight fixtures, then press ENTER.

Model 7i Digital Force / Torque Indicator User’s Guide

Attach weight fixtures (brackets, hooks, etc), as required. Do not yet attach any weights or apply any calibration loads. Press ENTER.

6. The display appears as follows:

CALIBRATION

COMPRESSION

Optionally exercise sensor, then press ENTER.

Optionally exercise the sensor several times (at full scale, if possible), then press ENTER.

7. The display appears as follows:

CALIBRATION

COMPRESSION

Gain adjust

Apply full scale load

10.000 lbF +/-20%,

then press ENTER.

Apply a weight equal to the full scale of the instrument, then press ENTER.

8. After displaying “Please wait…” the display appears as follows:

CALIBRATION

COMPRESSION

Ensure no load,

then press ZERO.

Remove the load applied in Step 8, leave the fixtures in place, then press ZERO.

9. The display appears as follows:

CALIBRATION

COMPRESSION

Apply load

1 OF 5

Enter load:

2.000 lbF

Press ENTER.

Use the UP and DOWN keys to adjust the load value as required. The load values default to even increments, as indicated by the previously entered number of data points (even increments are recommended for best results). For example, if a 50 lbF capacity sensor is calibrated, and 5 data points were selected, the load values will default to 10, 20, 30, 40, and 50 lb. Apply the calibration load. Then press ENTER.

Repeat the above step for the number of data points selected.

10. After all the compression calibration points have been completed, the display appears as follows:

Model 7i Digital Force / Torque Indicator User’s Guide

CALIBRATION

COMPRESSION COMPLETE

Reverse direction for tension. Attach necessary weight fixtures, then

ress ENTER.

Press ENTER.

11. At the completion of the tension calibration, the display appears as follows:

CALIBRATION

COMPLETE

Save & exit Exit w/o saving

To save the calibration information, select “Save & exit”. To exit without saving the data select “Exit without saving”.

12. Any errors are reported by the following screens:

CALIBRATION

Units must be gF.

Please try again

Press ENTER.

Displayed at the start of calibration if a disallowed unit is selected.

CALIBRATION

Load not stable.

Please try again.

Ensure that the load is not swinging, oscillating, or vibrating in any manner. Then try again.

CALIBRATION

COMPRESSION

Load too low.

Please try again.

Model 7i Digital Force / Torque Indicator User’s Guide

(

Causes:

1. The calibration weight does not match the set value.

2. If using a PTA configurable adapter, ensure that the output signal leads (SG+ and SG-) have

been installed into the appropriate terminal blocks. Some sensor manufacturers consider SG+ to be a compression value, while others consider it to be a tension value. If the indicator is expecting a compression load but it is receiving a tension signal, calibration cannot continue. Verify that the tension/compression indicator on the home screen properly corresponds to the load direction, and switch the signal leads, if required.

CALIBRATION

TENSION

Load too close

to previous.

Please try again.

The entered calibration point is too close to the previous point.

16 PASSWORDS

Two separate passwords may be set to control access to the Calibration section and to the menu and other keys. To access the passwords setup screen, select Passwords from the menu. The display appears as follows:

PASSWORDS Calibration Menu Key Units Key Mode Key Zero Key Data Ke

16.1 Calibration Password

Select Calibration from the sub-menu. The display appears as follows:

CALIBRATION

PASSWORD

* Disabled Enabled Set Password

0000 – 9999)

To set the password, select Enabled, then Set Password. Use the UP and DOWN keys to increment and decrement the value, from 0 to 9999. When the desired value has been selected, press ENTER, then

ESC to exit the sub-menu.

16.2 MENU Key Password

If enabled, every time the MENU key is selected, a password must be provided. Select Menu Key from the sub-menu. Follow the same procedure as described above.

Model 7i Digital Force / Torque Indicator User’s Guide

16.3 Locking Out Other Keys Other keys may be locked out individually. Select any combination of keys (UNITS, MODE, ZERO, DATA) by pressing ENTER in the Passwords sub-menu. Pressing a locked key will prompt the message

“KEY PROTECTED” and then revert to the previous screen.

16.4 Password Prompts

If passwords have been enabled, the following will be displayed when pressing the MENU key or accessing the Calibration section:

ENTER PASSWORD

(0000 – 9999)

5000

Use the UP and DOWN keys to select the correct password, then press ENTER to continue.

If the incorrect password has been entered, the display appears as follows:

INCORRECT

PASSWORD

Reset password

Request code:

XXXX

To re-enter the password, press ESC to exit to the home screen. Then, access the desired function and enter the password again when prompted.

If the password has been misplaced, it can be reset. Press ENTER to generate a request code. The

request code must be supplied to Mark-10 or a distributor, who will then provide a corresponding authorization code. Enter the activation code to disable the password.

17 OTHER SETTINGS

17.1 Automatic Shutoff

The indicator may be configured to automatically power off following a period of inactivity while on battery power. Inactivity is defined as the absence of any key presses or load changes of 100 counts or less. To access these settings, select Automatic Shutoff from the menu. The display appears as follows:

AUTOMATIC SHUTOFF

Disabled * Enabled Set Minutes 5

Model 7i Digital Force / Torque Indicator User’s Guide

Selection Description Disabled Enabled Set Minutes

Disable automatic shutoff. Enable automatic shutoff. The length of time of inactivity. Available settings: 5-30, in 5 minute increments.

Note: If the AC adapter is plugged in, the indicator will ignore these settings and remain powered on until the POWER key is pressed.

17.2 Backlight

Although the backlight may be turned on and off at any time by pressing the BACKLIGHT key, there are several available initial settings (applicable upon powering on the indicator). To access these settings, select Backlight from the menu. The display appears as follows:

BACKLIGHT

Off On * Auto Set Minutes 1

Selection Description Off On Auto

Backlight to be off upon powering on the indicator. Backlight to be on upon powering on the indicator. Backlight to be on upon powering indicator, but will shut off after a period of inactivity (as defined in the Automatic Shutoff sub-section). The backlight will turn on again when activity resumes. The length of time of inactivity is programmed in minutes via the

Set Minutes parameter. Available settings: 1-10, in 1 minute increments.

Note: If the AC adapter is plugged in, the indicator will ignore these settings and keep the backlight on,

unless the BACKLIGHT key is pressed. Selecting the On or Off setting in the Backlight menu will manually turn the backlight on or off as if the Backlight button were pressed.

17.3 LCD Contrast

The contrast of the display may be adjusted. Select LCD Contrast from the menu. The screen appears as follows:

LCD CONTRAST

Set Contrast

Press ENTER to modify the contrast. Select a value from 0 to 25, 25 producing the most contrast.

17.4 Tones

Audible tones can be enabled for all key presses and alerts, such as overload, set point value reached, etc. The Set Point alert can be configured to be either a momentary tone or a continuous tone (until the load is restored to a value between the set points). To configure the functions for which audible tones will apply, select Tones from the menu. The screen appears as follows:

Model 7i Digital Force / Torque Indicator User’s Guide

TONES

Keys * Alerts Set Points * Momentary Continuous

17.5 Initial settings

This section is used to configure the initial settings upon powering on the indicator. The initial units of measurement and the primary reading measurement mode may be configured. To access these settings, select Initial Settings from the menu. The screen appears as follows:

INITIAL SETTINGS

Units lbF Mode Real Time

17.6 Restore Default Settings

Default factory settings can be restored by selecting Restore Defaults from the menu. The settings may be found in the Specifications section. The screen appears as follows:

RESTORE DEFAULT

SETTINGS?

Yes

17.7 Information / Welcome Screen

The following screen is displayed at power-up and can be accessed at any time by selecting Information from the menu:

Digital Indicator

Model M7i Ind. SN: 1234567 Sensor: MR51-50 Sensor SN: 9876543 Version: 1.0

Model 7i Digital Force / Torque Indicator User’s Guide

18 SPECIFICATIONS

18.1 General

Accuracy: Sampling rate: Power:

Battery life:

Measurement units:

Outputs:

Weight:

Included accessories:

Environmental requirements:

Warranty:

18.2 Factory Default Settings

Parameter Setting

Set points Upper Disabled (defaults to 80% of full scale, C/CW, when enabled) Lower Disabled (defaults to 40% of full scale, C/CW, when enabled) Filters Current 16 Displayed 2048 Average mode Disabled Initial Delay 0 Trigger Load 10% of full scale Averaging Time (sec.) 5.0 Auto Output Settings All disabled Auto Zero Delay 5 sec. External Trigger Disabled Auto Output Settings All disabled Auto Zero Delay 5 sec. DATA Key Functions RS-232/USB Output Enabled Mitutoyo Output Disabled Memory Storage Enabled Auto Zero Disabled Auto Zero Delay 5 sec. Serial/USB RS-232 Output Selected Enabled USB Output Selected Disabled Baud Rate 9,600

±0.1% of full scale + sensor 14,000 Hz AC or rechargeable battery. Low battery indicator appears when battery level is low, and

indicator powers off automatically when power reaches critical stage.

Backlight on: Backlight off:

lbF, ozF, gF, kgF, N, kN, mN, lbFft, lbFin, ozFin, kgFm, kgFmm, gFcm, Nm, Ncm, Nmm (depending on sensor)

USB / RS-232:

Language 2) for full computer control.

Mitutoyo (Digimatic): Analog: General purpose: Set points:

0.7 lb [0.3 kg]

Carrying case, AC adapter, battery, USB cable, resource CD (USB driver, MESUR software, MESURTMgauge DEMO software, and user’s guide), NIST-traceable certificate of calibration

40 - 100°F, max. 96% humidity, non-condensating

3 years (see individual statement for further details)

up to 7 hours of continuous use up to 12 hours of continuous use

Fully configurable up to 115,200 baud. Includes GCL2 (Gauge Control

Serial BCD suitable for all Mitutoyo SPC-compatible devices.

±1 VCD, ±2% of full scale at capacity.

Three open drain outputs, one input.

Three open drain lines.

Lite

Model 7i Digital Force / Torque Indicator User’s Guide

Data Format Numeric + Units Auto Output Disabled Outputs per Sec. 125 Mitutoyo BCD Output Disabled Break Detection Disabled Threshold 10% of full scale % Drop 50% of peak Auto Zero Delay 5 sec. Auto Output Settings All disabled Auto Storage Disabled Auto Zero Disabled First, Second Peak Disabled Thresholds 10% % Drops 50% Auto Zero Delay 5 sec. Auto Output Settings All disabled Auto Store Peaks Disabled Data Capture Disabled Period 00:00:01:00000 Start Condition Start load of 10% of full scale Stop Condition Stop load of 20% of full scale Auto Settings All disabled Footswitch Disabled Steps 1 / 2 / 3 None Delays 1 / 2 / 3 0 sec. COF Disabled Sled Weight 20% of full scale Custom Unit Disabled Base Unit lbF Multiplier 1.000 Tones Keys Enabled Alerts Enabled Set Points Momentary Automatic Shutoff Enabled Set Minutes 5 Backlight Auto Set Minutes 1 Initial Settings Units Depends on sensor Mode Real Time Passwords All disabled

18.5 Dimensions (IN [MM])

Model 7i Digital Force / Torque Indicator User’s Guide

Mark-10 Corporation has been an innovator in the force and torque measurement fields

since 1979. We strive to achieve 100% customer satisfaction through excellence in product

design, manufacturing and customer support. In addition to our standard line of products we

can provide modifications and custom designs for OEM applications. Our engineering team

is eager to satisfy any special requirements. Please contact us for further information or

suggestions for improvement.

Force and torque measurement engineered better

Mark-10 Corporation

11 Dixon Avenue Copiague, NY 11726 USA 1-888-MARK-TEN Tel: 631-842-9200 Fax: 631-842-9201 Internet: www.mark-10.com E-mail: info@mark-10.com

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