LTL 730 Dynamometer and Crane Scale User’s Manual Cooper Instruments and Systems PH: 540-349-4746 • FAX: 540-347-4755 www.cooperinstruments.
CF 150 LTL 730 ii 5/16/06
CONTENTS 1.0 Specifications .................................................................................................................... 1 2.0 Safe Operation .................................................................................................................. 1 2.1 Radio Safety .................................................................................................................. 2 2.2 Radio Communications Reliability...........................................................
1.0 SPECIFICATIONS Communicator Specifications Dynamometer Specifications Enclosure: Designed to NEMA 3 / IP44 with optional sleeve. Suitable for protected outdoor use. Instrument size: 9.0 x 4.6 x 1.8 inch (228 x 117 x 45mm). Accuracy: Not applicable. Only sends and receives digital information. Display: 128 x 64 dot-graphic LCD display can show full readings up to 5 instruments. Battery life: 60 hours wireline, 20 hours radio using four AA alkaline batteries under typical use.
Any zeroed deadload must be considered as part of the ultimate load. Although this instrument has a substantial overload protection rating, the instrument should not be used above the rated capacity. Doing so can significantly impact fatigue life of the instrument and cause premature and abrupt failure. If a higher capacity reading is needed, Cooper Instruments insists that a larger instrument be used. Safety is always a concern in overhead lifting and tensioning applications.
Radio systems are vulnerable to interference, resulting in delays between the dynamometer scale and remote. In some instances of interference, the display shown on the remote may be several seconds old. This can result in a hazardous situation when the system is used as the reference for acceptable loads in cases such as proof loading and monitoring of binding or overload.
Zero key ESC key Arrow key Use this key to zero the force indicated on the display. Use this key to escape from portions of the menu structure and return to previous choices or displays. Use this key to access any available soft keys not currently viewed. 4.2 LTL 730 Connector The connector on the LTL 730 is recessed for protection. It is used to connect the instrument to a Communicator remote display/controller, printer or external power supply. Contact Cooper Instruments for details. 4.
Display Mode key Use this key to cycle between Communicator display modes. They are LTL 730 specific force value, LTL 730 specific peak value, multiple display of force values and multiple display of peak values. Keypad keys Use these keys to enter numeric characters. Use for address assignments and other miscellaneous data entry. Communicator Connectors The Communicator may have between 2-3 connectors. CELL is for wireline communications with an LTL 730. COM1 is for serial communications.
6.0 LTL 730 SETUP To begin using the LTL 730, it is recommended that you set it up to suit your specific needs and equipment. You can access the SETUP menu with the softkeys. Refer to section 11.0 for some common configurations. Same as Communicator Same as Communicator Name of LTL 730 Figure 4. Operator setup menu for the LTL 730 6.1 Setup Menu Press the appropriate soft key shown in Figure 4 to accomplish the functions listed on the following pages.
Peak force and unit of measure on 2nd line 104.5 lbf 302.5 lbf Format #3 Live force value plus unit of measure on 1st line Peak force and unit of measure on 2nd line Descriptive prefixes on each line Force 104.5 lbf Peak 302.5 lbf Format #4 Fixed position output. Works well with RS-232 utilities, such as WedgeLink, for parsing into a spreadsheet such as Microsoft Excel. (comma- separated). Excel 1 2 A 104.5 302.5 B lbf lbf Fixed characters.
Contr Blite Press this key to adjust the contrast of the LCD display. Press the Up soft key to lighten the contrast. Press the Down soft key to darken the contrast. There is a keypad shortcut for increasing and decreasing contrast. While in normal display mode press Arrow key and F2 simultaneously to increase contrast. There is a keypad shortcut for increasing and decreasing contrast. While in normal display mode press Arrow key and F2 simultaneously to increase contrast.
Comm The serial test is an internally conducted diagnostic that requires a jumper across transmit and receive. This requires a plug or cable assembly. Pressing the Serial soft key accesses the following soft keys: COM1 Press this key to test COM1 in a loopback test. COM2 Press this key to test COM2 in a loopback test. To perform a COMM test, the unit must be configured to use RS-232 communications. 7.
7.1 Configuration Menu Figure 7. Configuration menu Config Setup The first soft key is Setup. Press this and you access the setup menu shown in Figure 4. All its features are covered in that section of the manual. Config Reso Reso stands for resolution. Resolution is the value by which the LTL 730 displays increments. Press this key to set the unit to standard (1000 divisions) resolution or enhanced (5000 divisions) resolution.
2. Press COM 2 or COM 1. COM2 is used to configure the optional radio board, if installed. The following display appears. 3. Select a transmission level using the Sel keys to scroll through the four choices; Disabled (default), RS232, RS485, and RF. RF stands for Radio Frequency and means transmission would be by radio (requires optional radio board). Press Enter to accept the setting. If you set the Trans Level to RF, steps 3-5 are automatically set and do not appear.
6. Select a databit value using the Sel keys to toggle between the two choices; 7 or 8 (default). Press Enter to accept the setting. The following display appears. 7. Select a mode of communication you want using the Sel keys to scroll through these choices; Continuous, , Poll, Remote and Prink Key Only. Press Enter to accept the setting. If you choose Continuous, you will be prompted to select a print format for the transmission and a rate at which you want to send the transmission.
2. Select a display mode value using the Sel key to scroll through the choices. Press Enter to accept the displayed setting. The display returns to the first soft key set of the Configuration menu. Config Units The next soft key is Units. Use this item to set the units of measure you want available when you use the Units key in the normal operating mode. This can also assign custom units. Custom units are typically used for any of three purposes: 1.
The following screen is displayed: Select Yes if you only want the instrument to automatically shut down when there is inactivity. Select No if you want the instrument to power down after the timer counts down, regardless of any activity. Config ChPwd The next soft key is ChPwd. Use this to change the password used to access the configuration menu. IMPORTANT: Changing the password denies access to this menu without entry of the new password. Contact Cooper Instruments if you lose your password.
8.3 Force Measurement Rezero Rezeroing allows the weight or load of fixturing to be invisible to the measurement. The zeroed load must always be considered as part of the maximum capacity. 1. 2. 3. 4. 5. Turn on the unit with the On/Off key. Remove any weight from the LTL 730. Zero the LTL 730 by pressing the ZERO key. Apply the tare force to the LTL 730 and press the ZERO key. Apply the force to the LTL 730 and read the net force on the display.
9.0 COMMUNICATOR OPERATION Use the UP and DOWN arrow keys on the Communicator to scroll through the displays of all active LTL 730s and a total screen. The Cooper Instruments Communicator is a remote display and control module designed to work with the LTL 730. It can be connected by wire or can communicate by radio if both the Communicator and LTL 730 are equipped with optional radio boards. The Communicator may simultaneously view and control several dynamometers at one time.
Figure 9. Setup menu 9.2 Setup Menu Ptfmt Ntwrk Misc Select from print formats 1-7. See Print Formats section on the following pages. Setup the network. First choice is Radio Channel #. Can pick 1-64. All LTL 730s set to this same number will communicate with this Communicator. Next choice is number of LTL 730s in the network. Pick from 1-15. Next choice, you must set the address for each LTL 730. Each LTL 730 in the network must have a unique number. Pick from 1-15.
Test About Lets you test the following items: Batt Press this to check the battery condition. Display shows voltage condition of the batteries. Disp Press this to perform a display test. Press any key to stop the test. Keys Press this key to test individual key function. Press ESC to stop the test. Comm Press this key to perform LOOP/NOLOOP tests onCOM1. Press ESC to return to Test soft key display. COM1 must be enabled in Config menu to test. Ntwrk Press this key to perform a radio test.
Units Power Chpwd Reset Press this key to set the following: Choice of power-up unit of measure Enable or disable lbf, kgf, N, custom unit 1 and 2 Press this to set the following: Enable Auto-shutdown (Y/N) Shutdown Timer (set minutes before idleness causes unit to shut off) Press this to change the Config menu password. Press and you are given the choice of resetting the Communicator to its factory defaults. 9.
Example: CellDescriptionLive ForceUnits 1North104.5lbf 2South4801lbf Total4905.5lbf Format #7 Outputs print format #6 plus peak values for all LTL 730s. 10.0 GENERAL INFORMATION 10.1 Changing Batteries To replace discharged batteries, unscrew the battery compartment cap on the right side of the dynamometer. Remove the two C cells and replace them with the + poles inserted first.
Many things can degrade radio signals, such as brick walls, metal reinforced concrete, machinery and even wiring within walls. Other systems such as wireless networks and cordless phones may degrade or interfere with operation of the Cooper Instruments radio-equipped system. As an FCC approved instrument on a license-free radio band, the instrument must accept interference received from other devices that share the same frequency and airspace.
A punch sized slightly smaller than the holes in the spacer may be helpful. The spacers should “sandwich” the dynamometer body, but should not be drawn completely tight. Remove the four large circular foam plugs from the carry case and it can continue to be used with the spacers attached. 11.
Key Settings (LTL 730 2): COM1 Trans Level – Disabled COM2 Trans Level – RF Radio Channel (1-64): 1 (must match Communicator setting) Network ID (1-15): 2 Network Identifier: B Key Settings (LTL 730 3): COM1 Trans Level – Disabled COM2 Trans Level – RF Radio Channel (1-64): 1 (must match Communicator setting) Network ID (1-15): 3 Network Identifier: C Key Settings (LTL 730 4): COM1 Trans Level – Disabled COM2 Trans Level – RF Radio Channel (1-64): 1 (must match Communicator setting) Network ID (1-15): 4 Net
Problem Possible Cause Solution appear accurate system straight. Verify system is applying force directly through the dynamometer with no off center or torsional loads being applied to the instrument. If being compared against dead-weights, check your local gravitational constant (see Force Measurement & Weighing Differences section). Use custom units to compensate or calibrate on-site. Place LTL 730 in low-resolution mode. Lift an arbitrary weight several times as close to capacity as possible.
14.2 Alignment Insure shackles are oriented parallel with the instrument. Apply load in the center of the shackle bow. 14.3 Proper Pin Fit A proper fitting pin is important in order to generate an even stress distribution and avoid yield stresses. To achieve published accuracy you must use the shackle pins and centering spacers provided by Cooper Instruments. 14.4 Torque and Bending Torque and bending should be avoided. Use swivels on the lifting wire for anti-torque and avoid side forces. 14.
Use hardware that allows single point attachment and freedom of alignment. Do not use hardware that is undersize or restricts self-alignment. This results in poor measurement performance and possible dangerous safety conditions. Do not torque, bend or sideload. 15.
