Users Guide Model 7i Digital Force/Torque Indicator www.cooperinstruments.
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.
Model 7i Digital Force / Torque Indicator User’s Guide 1 OVERVIEW 1.1 List of included items Qty. 1 1 1 1 1 1 Part No. 12-1049 08-1022 08-1026 09-1165 - Description Carrying Case AC adapter body with US, EU, or UK prong Battery (inside the indicator) Certificate of conformance USB cable Resource CD (USB driver, MESURTM Lite software, MESURTMgauge DEMO software, User’s Guide) 1.
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 + 7i ±0.1% of full scale = Total ±0.25% of full scale = Total ±0.55% 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 + 3i ±0.2% of full scale This translates into a fixed error of up to: 0.55% x 50 ozFin = 0.
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.
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.
Model 7i Digital Force / Torque Indicator User’s Guide on the printed circuit boards. Sensor connector oriented up Sensor connector oriented down 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. 3.4 Installing the USB driver If communicating via USB, install the USB driver provided on the Resource CD.
Model 7i Digital Force / Torque Indicator User’s Guide 4 HOME SCREEN AND CONTROLS 4.1 Home Screen 1 13 2 3 12 4 11 10 5 9 No.
Model 7i Digital Force / Torque Indicator User’s Guide N – Newton kN – Kilonewton mN – Millinewton 7 Break Detection On/Off Mode 8 9 10 11 Number of stored data points Battery / AC adapter indicator Automatic data output indicator 12 High / low limit indicators 13 Set points 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
Model 7i Digital Force / Torque Indicator MODE DATA UNITS 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. User’s Guide (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.
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.
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.
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.
Model 7i Digital Force / Torque Indicator Threshold % Drop Auto Zero Delay User’s Guide 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.
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.
Model 7i Digital Force / Torque Indicator Parameter Initial Delay Averaging Time Trigger Load User’s Guide Description 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.
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).
Model 7i Digital Force / Torque Indicator User’s Guide 9.5.1 External Trigger Schematic Diagram +3.3V BAT54SLT1G 22k SWITCH UNDER TEST (NO OR NC) 330 Ohm 14 TO MICROPROCESSOR IN 0.1 uF 1 GND GND GAUGE USER - SUPPLIED 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.
Model 7i Digital Force / Torque Indicator User’s Guide START CONDITION Momentary HiLo Momentary LoHi * Maintained High Maintained Low + More Select “+ More” for additional options: START CONDITION 2 Start Load 3.500 lbFin * DATA Key Function Momentary HiLo Momentary LoHi Maintained High Maintained Low Start Load Data capture is initiated when: An external trigger occurs. See External Trigger sub-section for details for each of these functions. The desired trigger load is reached.
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).
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.
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.
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 0002 0003 0004 D 0005 0006 0007 2.458 lbFin 2.224 lbFin 2.446 lbFin 1.890 lbFin 2.098 lbFin 1.998 lbFin 2.042 lbFin Press ENTER to delete the value. To exit Delete mode, press DELETE again.
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.
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.
Model 7i Digital Force / Torque Indicator Function Enabled Base Unit Unit Name Multiplier User’s Guide Description 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 and keys to scroll through the available characters. The character “_” refers to a space.
Model 7i Digital Force / Torque Indicator User’s Guide DATA FORMAT * Numeric + Units Numeric Only Invert Polarity Omit Polarity Selection Numeric + Units Numeric Only Invert Polarity Omit Polarity Description Output format includes the value and unit of measure. Compression/clockwise values have positive polarity, tension/counter-clockwise values have negative polarity. Output format includes the value only. Polarity same as above.
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.
Model 7i Digital Force / Torque Indicator User’s Guide 14.5 I/O Connector Pin Diagram (DB-9HD-15 female) Pin No.
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.
Model 7i Digital Force / Torque Indicator User’s Guide Memory & Statistics MEM Transmit all stored readings STA Transmit statistics Set Points SPHD SPLD SPHn SPLn Disable high set point Disable low set point High set point. n=value (+ for C/CW, - for T/CCW) Low set point. n=value (+ for C/CW, - for T/CCW) Note: High set point value must be greater than low set point value if both values are set to the same polarity.
Model 7i Digital Force / Torque Indicator User’s Guide 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).
Model 7i Digital Force / Torque Indicator User’s Guide 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.
Model 7i Digital Force / Torque Indicator User’s Guide 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.
Model 7i Digital Force / Torque Indicator User’s Guide CALIBRATION COMPRESSION COMPLETE Reverse direction for tension. Attach necessary weight fixtures, then press 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.
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.
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.
Model 7i Digital Force / Torque Indicator Selection Disabled Enabled Set Minutes User’s Guide Description 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.
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.
Model 7i Digital Force / Torque Indicator User’s Guide 18 SPECIFICATIONS 18.1 General Accuracy: Sampling rate: Power: Battery life: Measurement units: Outputs: ±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.
Model 7i Digital Force / Torque Indicator Data Format Auto Output Outputs per Sec.
WARRANTY REPAIR POLICY Limited Warranty On Products Any Cooper Instruments product which, under normal operating conditions, proves defective in material or in workmanship within one year of the date of shipment by Cooper will be repaired or replaced free of charge provided that a return material authorization is obtained from Cooper and the defective product is sent, transportation charges prepaid, with notice of the defect, and it is established that the product has been properly installed, maintained, an
