MSI 7300 Dynalink 2 Manual
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Introduction 7 1.5 Specifications Table 1-1. MSI-7300 Specifications Accuracy Rated accuracy: ±0.1% of capacity. Ty pical accuracy ±(0.1%+1d) of reading. ‘d’ equals one displayable increment. Resolution Standard displayed resolution: 2000-2 500 ‘d’ . H i-Res mode increases resolution to 5000-6250 ‘d’. Inte rnal A/D resolution: 24 bits. Overload Power Display Operating Tem p Operating Tim e Load Cell & Enclos ure Load Cell F1 and F2 Calibration Auto Zero Maintenance Auto-Off Mode Units Filtering Totalization Peak Setpoints Service Counte r WARNINGThe MSI-7300 has a safe mechanical overload of 200% of capacity. Overloads greater than 200% may result in physical damage to the link. The ultimate over load is rated to 500%-700% of capacity (see Ta b l e 1-2). At ultimate overload, structural failure and dropped loads may occur. Dropped loads ma y cause serious personal injury or death. Safe link mechanical overload, 200% of capacity. Ultimate link overload, >500% of capacity. Typical ultimate over load is 700% or greater. Note that the Dyna-Link is designed to have a gr eater safety factor than the connecting shackles which have a typical ultimate safety factor of 600% Battery operated, see Table 1-2 for ba ttery size and quan tity per unit. Alkaline cells can be replaced with rechargeable NiMH cells. Five digit, 1.22 in (31 mm) numeric digits. Six digi t, 1 in (26 mm) on 100000 lb units and higher - 40°F to +122°F (-40°C to +50°C), Ra ted ac curacy range -10°C to +40°C. >150 hours typical (Alkaline C cells) / >300 hour s typical (Alkaline D cells). NEMA 4/IP65 anodized aluminum, 2024-T351 Aircraft Quality. 2000 Ω Bridge Programmable multifunction buttons for use as TEST, TOTAL, UNIT, PEAK, TARE, NET/GROSS, VIEW TOTAL, PRINT AND High Res mode. Fully digital calibration from the front panel or through a computer interface. Standard, can be disabled internally. Prolongs battery life by turning the power off after 15, 30, 45, or 60 minutes (oper a tor determined) of no Dyna-Link activity. kg, lb, Tons (US short ton), Metric To ns, ki lonewtons (other Units available with custom calibrations). Selectable - OFF, Low (LO), Medium (HI-1), High (HI-2). Standard - Press button or automatic; TOTAL weight up to 99999 X1000 un its Uses unfiltered faster reading of A/D, (>220 readings per second). Two internal standard setpoints and two ul trabright LEDs on indicator panel Two independent 16 bit registers; re gister 1 updated each time the force exceeds 25% of capacity; register 2 u pdated each time the force exceeds overload; when register 1 exceeds 163 83 or register 2 exceeds 1023, display reads “LCnt” for load cell counter; test function shows the two readings in order.
8 MSI-7300 Operator’s Manual 1.5.1 Standard Capacities and Resolution Table 1-2. Standard Capacities and Resolutions CapacityStd‘d’StdCountsHiRes ‘d’HiRes CountsUltimate OverloadConfig 1000 lb 500 kg 0.5 Ton 4.9 kN 0.5 lb 0.2 kg 0.0002 T 0.002 kN2000 2500 2500 24500.2 lb 0.1 kg 0.0001 T 0.001 kN 5000 5000 5000 4900>>700% Alum 2 C-Cells 2500 lb 1250 kg 1.25 ton 12.25 kN 1 lb 0.5 kg 0.0005 T 0.005 kN2500 2500 2500 24500.5 lb 0.2 kg 0.0002 T 0.002 kN 5000 6250 5000 4900 700% Alum 2 C-Cells 5000 lb 2500 kg 2.5 Ton 24.5 kN 2 lb 1 kg 0.001 T 0.01 kN2500 2500 2500 24501 lb 0.5 kg 0.0005 T 0.005 kN 5000 5000 5000 4900 700% Alum 2 C-Cells 10000 lb 5000 kg 5.0 Ton 4.9 kN 5 lb 2 kg 0.002 T 0.02 kN2000 2500 2500 24502 lb 1 kg 0.001 T 0.01 kN 5000 5000 5000 4900 700% Alum 2 C-Cells 25000 lb 12500 kg 12.5 Ton 122.5 kN 10 lb 5 kg 0.005 T 0.05 kN2500 2500 2500 24505 lb 2 kg 0.002 T 0.02 kN 5000 6250 6250 6125 700% Alum 2 D-Cells 50000 lb 25000 kg 25 Ton 245 kN 20 lb 10 kg 0.01 T 0.1 kN2500 2500 2500 245010 lb 5 kg .005 T 0.05 kN 5000 5000 5000 4900 600% Alum 2 D-Cells 100000 lb 50000 kg 50 Ton 490 kN 50 lb 20 kg 0.02 T 0.2 kN2000 2500 2500 245020 lb 10 kg 0.01 T 0.1 kN 5000 5000 5000 4900 550% Alum 2 D-Cells 120000 lb 60000 kg 60 Ton 588 kN 50 lb 20 kg 0.02 T 0.2 kN2400 3000 3000 294020 lb 10 kg 0.01 T 0.1 kN 6000 6000 6000 5880 500% Steel 2 D-Cells 180000 lb 90000 kg 90 Ton 882 kN 100 lb 50 kg 0.05 T 0.5 kN1800 1800 1800 176450 lb 20 kg 0.02 T 0.2 kN 3600 3600 4500 4410 500% Steel 2 D-Cells 260000 lb 130000 kg 130 Ton 1275 kN 100 lb 50 kg 0.05 T 0.5 kN2600 2600 2600 255050 lb 20 kg 0.02 T 0.2 kN 5200 6500 6500 6375 500% Steel 2 D-Cells 380000 lb 190000 kg 190 Ton 1863 kN 200 lb 100 kg 0.1 T 1 kN1900 1900 1900 1863100 lb 50 kg 0.05 T 0.5 kN 3800 3800 3800 3726 500% Steel 2 D-Cells 550000 lb 225000 kg 225 Ton 2206 kN 200 lb 100 kg 0. 1 T 1 kN2750 2250 2500 2206100 lb 50 kg 0.05 T 0.5 kN 5500 4500 5000 4412 440% Steel 3 D-Cells NoteShort ton and metric ton resolutions are the same.
Introduction 9 1.6 Features • Designed to meet or exceed all U.S. an d International safety and environmental standards. • Greater than 150 hours operation with two standa rd Alkaline ‘C’ cells. Greater than 300 hours with two standard Alkaline ‘D’ Cells (25000 lb/12500 kg capacities and above). Also works with off the shelf NiMH rechargeable cells. • Automatic power off conserves battery life by sensing no activity after 15,30,45 or 60 minutes, determined by operator, and turns power off. • Rugged construction throughout. IP65/NEMA4 for outdoor use. • Designed for use with USA made Crosby shackles (optional). • Shackle holes reinforced with steel sleeves (25000 lb/12500 kg capacities and above) to reduce wear. • Shackle stops ensure ease of mounting. The stops prevent the shackles from falling to the side of the unit and are held in position for easy rigging. • MSI’s ScaleCore technology provides precision, high resolution (2500 division st andard and up to 10,000 possible) 24 bit A/D conversion coupled with an advanced RISC microcontroller. • Five large, 1.22 inch (31 mm) LCD dig its for clear tension readings from a distance. Six digits, i in (26 mm) on units 100,000 lb and over. • Easy to maintain: Full digital calibration assures reliable, repeatable measurem ents. Can be calibrated without test weights using MSI C-Cal technology. • Selectable kg/lb/tons (US Short)/metric tons/kilonewtons. • Automatic or manual weight totalization for loading operations. • Easily customized for specia l applications. • Hi speed PEAK mode for stre ss and drop test analysis. • Two setpoints can be set for any in-range tensio n/weight value for operator alerts or process control. Optional audible alarm output. • ScaleCore technology provides quick and easy firmware updates and calibration/ setup back up. • Two Service counters ensure load train safety b y warning the user to perform safety checks when the lift count gets high or the Dyna-Link has been overloaded repeatedly. Counter 1 (LFCnt) records the number of lifts above 25% of capacity. Counter 2 (OLCnt) records the number of times the Dyna-Link overloads.
10 MSI-7300 Operator’s Manual 1.7 Options Options which you may have ordered w ith your Dyna-Link 2 may include the following: • Audible alarm (triggered by setpoint 1) • Top and bottom shackles • Portable carry case • Serial I/O cable (RS-232) • RF remote display (will also operate ha rd-wired). See RF remote display for ScaleCore user guide. • Hardwired cable for remote display. • RF remote modem, RS-232, for direct connection to computers, scoreboards, or serial printers. See RF modem for ScaleCore user guide. • RF remote modem, USB, for direct conn ection to computers. See RF modem for ScaleCore user guide. • RF remote gateway for direct connection to an Ethernet LAN and for use with MSI’ s SCC MP program. See RF modem for ScaleCore user guide. • RF or hardwired scoreboard display. 1.8 Unpacking When unpacking the Dyna-Link 2 from the shipping container, ensure that all assembly parts are accounted for. Check for any visible damage and immediately report any damage to your shipper. Retain the original shipping container for future shipping or transporting. 1.9 Assembly 1. Identify and locate the following: • Batteries, two ‘C’ cells or ‘D’ cel ls depending on capacity • Top shackle and pin (option or customer supplied) • Bottom shackle and pin (option or customer supplied) • Two cotter pins 2. Slide top shackle over load cell and insert the pin. 3. Screw the shackle nut onto the pin. WARNING Note NoteIt is not necessary or desirable to tighten the nut too tight. Make sure the nut is down far enough to expose the cotter pin hole. 4. Lock the shackle pin in place with the supplied cotter pin. Bend the cotter pin. 5. Repeat steps 1-3 for the bottom shackle. 6. Remove the battery access port cover with a coin or a large screwdriver. 7. Insert the two batteries, positive end first, into the battery shaft. 8. Reinstall the battery access port cover. The Dyna -Link 2 is now ready for use. The Dyna-Link2 will automatically start when the batteries are installed. The Dyna-Link 2 load train will be unsafe for use i f the shackle pins are not properly secured with cotter pins.
Introduction 11 1.10 Battery Replacement Disposable Batteries The BT annunciator will display when the is battery is beginning to get low. When the BT annunciator starts to blink, the batterie s are close to being completely drained. For maximum life, use the batteries until the system shuts off. Rechargeable Batteries When using Nickle-Metal-Hydri de (NiMH) Cells, it is recommended that the cells are recharged immediately after the BT annunciator starts to blink. Do not allow the batteries to discharge completely, it may compromise the recharge life of the battery. NiMH Cells in C and D sizes have a lower capacity then the Alkaline C and D sizes. MSI recommends having two sets of NiMH batteries, so one set can be charging while the other is in use. NoteNiMH ‘D’ cells are often repackaged ‘C’ cells so you don’t get an increase in battery life for Dyna-Links large enough for ‘D’ cells. The use of NiCad batteri es is not recommended. If the Dyna-Link 2 will not be used for an extended period, the batteries should be removed. A small current is used when powered off which will discharge the batteries in about six months.
12 MSI-7300 Operator’s Manual 2.0 Operation 2.1 Power To turn on the Power 1. Press POWER. • The LCD will show all segments for a display test. • The software version number will display. The D yna-Link 2 is ready for use. 2.2 Zero Takes out small deviations in zero when the Dyna-Link 2 is unloaded. See Section 3.6 for zeroing (Taring) pack age or pallet weights. Note NoteThe tension reading must be stable within the motion window for the zero function to work. 1. Press ZERO. The display reads 0 (or 0.0 or 0.00, etc). The backup memory stores the zero reading, and can restore it even if power fails. Zero - Rules for Use: • Works in GROSS mode or NET mode. Zeroing while in NET mode will zero the gross tension causing the display to show the negative tare value. • The unit must be stable within the motion window, it will not zero until the stable ann unciat or is on. • The unit will “remember” that it has a zero reques t for two seconds. If motion clears in that time, it will zero. • The unit will accept a zero setting over th e full range of the Dyna-Link. Zero setti ngs abo ve 4% of full Dyna-Link will subtract from th e overall capacity. For example, if you zero out 100 lb on a 1000 lb Dyna-Link, the overall capacity will reduce to 900 lb plus the allowed over-range amount.
User Key Functions (F1and F2) 13 3.0 User Key Functions (F1and F2) There are optional functions that can be programmed for the function keys (F1 andF2) on the front panel, as well as on the RF remote display. See Section 4.2 for setup instructions. NoteThe functions PRINT (F3), and TARE are available full time on the RF remote display. 3.1 OFF No USER key function assigned. The F-Key is disabled. 3.2 TEST The TEST function provides an LCD test that lig hts all LCD segments and the LED at once and then counts from 00000 to 99999. Other internal tests are performed and if any test fails, an error code will display. See Section 7.2 for a description of all error codes. 3.3 TOTAL NoteThe Total Mode must be programmed from the setup menus before the USER key will function. See Section 4.5. For accumulation of multiple weighmen ts. The accumulator always uses the displayed weight, so GROSS and NET readings can be added into the same TOTAL. There are four modes of totalizing: manual and three auto modes. The manual mode requires the TOTAL key be pressed with the tension on the unit. The tension will then be added to the previously accumulated value. This assures that a weight on the scale is only added to the total once. Both the manual and three auto total modes require that the tension on the Dyna-Link return below 0.5% (relative to full scale) of GROSS ZERO or NET ZERO before the next weighment can be added. Applied weight must be ≥ 1% of full scale above GROSS ZERO or NET ZERO before it can be totaled. 3.3.1 MANUAL TOTAL The Fx-TOTAL key under the MANUAL TOTAL mode functions in this manner: 1. With the tension at more than 1% of capacity, push the Fx-TOTAL key to add the current tension to the TOTAL weight. The Fx LED blinks to indicate the tension value was accepted. The TOTAL LCD an nunciator and the total weight is displayed for about five seconds, then the number of samples is displayed for about two seconds. 2. Remove the weight, when the tension is les s than 1% of capacity, place next load to be accumulated on the unit. 3. Repeat until all loads to be accumu lated have been added to the total. 4. To view the total weight accumulated, push the Fx-TOTAL key with the tension at less than 1% of capacity (no weight on unit), the total weight will display for five seconds (view total) without chan ging the total value. The TOTAL LCD annunciator and the total weight is displa yed for about five seconds and then the number of samples is displayed for about two seconds.
14 MSI-7300 Operator’s Manual 3.3.2 AUTO TOTAL The Fx-TOTAL key under the AUTO TOTAL mode functions as auto total on/auto total off: The auto mode has three variations which are programmed in the setup menu: •AutoL oad – Any settled tension above the ‘rise above’ threshold will be automatically totaled. Then the Dyna-Link must fall below the ‘drop below’ threshold before another total is allowed. • AutoN orm – This mode takes the last settled weight to auto total with. The total occurs only once the scale goes below the th reshold. This allows the load to be adjusted without a total occurring. Once the load is re moved, the scale uses the last settled reading for total. • AutoHig h – Similar to the AutoNorm mode except the scale uses the highest settled reading. Useful for loads that can’t be removed all at once. 3.4 Clear Total The Fx-VIEW TOTAL key activates the total weight display followed by the number of samples. While the display is showing the total, total is cleared by pressing ZERO. 3.5 Net / Gross Switches the display between net and gross modes. Net tension is defined as gross tension minus a tare weight. To switch between net mode and gross mode: 1. Press the Fx-NetGross key (setup to the net/gross function). 2. The Fx-NetGross key will only function if a tare value has been established. 3. Switching back to gross mode from net mode will not clear the tare value. This all ows the operator to use the gross mode temporarily without having to reestablish the tare value. Only clearing the tare or setting a new tare will change the tare value held before switching into gross mode. 3.6 TARE In force measurement applications, tare is useful as a wa y to display differential force. By taring out a known force, only positive and negative deviations from the tared force are displayed. This can also increas e accuracy as any initial error is removed leaving only slope error. In scale applicati ons, tare is typically used to zero out a known weight such as rigging, a packing container, or pallet and display the load in NET tension/weight. To use tare, one of the two function keys must be configured to the TA R E function. A tare value is entered by pressing the Fx-TARE key. The TA R Efunction in the Dyna-Link 2 is defined as a tare-in/tare -out operation. The first press of the Fx-TARE key stores the current tension/weig ht as a tare value and then the Dyna-Link subtracts the tare value from the gross tension and changes the display to NET mode. The next press of the Fx-TARE key will clear the tare value and revert the display to GROSS mode. The optional RF remote display has a TA R E key permanently available.
User Key Functions (F1and F2) 15 3.6.1 To Tare and Display the Net Tension 1. Press (programmed as TA R E). 2. The tension reading must be stable within the motion window for the tare functio n to work. 3. The digits display 0 and the tension mode changes to NET. 4. The backup memory in the Dyna -Link 2 stores the tare reading, and can restore it even if power fails. 3.6.2 To Clear the Tare and Revert to Gross Tension 1. Press (programmed as TA R E). 2. The NET annunciator will turn off. 3. Absence of the NET annunciator is the only indication that you are in GROSStension mode. NoteTo view the GROSS tension without clearing the tare value, program the remaining function key to the function NET/GROSS. 3.6.3 Tare- Rules for Use: 1. Only positive gross tension readings can be tared. 2. The stable annunciator must be on. The tension/force reading must be stable. 3. Setting or changing the tare has no effect on the gross zero setting. 4. Taring will reduce the apparent over range of the Dyna-Link. For example, tarin g 100 pounds of rigging on a 1000 lb Dyna-Link, the Dyna-Link will overload at a net tension of 900 lb (1000-100) plus any additional allowed overload (usually ~4% or 9d). 5. The Dyna-Link stores the tare value in non-volatile memory is restored when power is cycled. 3.7 PEAK HOLD Peak hold will only update the display when a higher peak tension reading is established. The peak hold function uses a high speed mode of the A/D converter allowing it to capture transient tensions at a far higher rate than typical dynamometers. Peak hold is cleared and re enabled with th e Fx-Peak Hold key. When a new peak is detected, the Fx LED will fl ash three times. The accuracy of the system in peak hold mode is slightly reduced to .2% of capacity ± 5d. The filter setting is turned off while in peak hold mode to ensure the fastest acquisition rate. Example Peak Hold Application The peak hold function is useful in materials and ‘Fall’ tests. Common tests for fiber ro pe in clude overall breaking strain (OB€), breaking force, and cycled breaking strain. The Dyna-Link 2 combined with a force test stand, meets the speed and accuracy requirements to properly conduct these tests.
1) Program a function key to PeakHold (P-Hld) In this example we’ll use F1for Peak Hold. 2) Prepare the test stand and test sample. 3) Press ZERO to zero out any residual strain on the link. 4) Press F1 PkHold . Confirm that the “Pk” annunciator is on. A small jump in the reading may occur depending on the stability of your test stand. 5) Apply the test force. The F1 LED will blink three times for every new peak it detects. 6) When the test force is removed, the Peak value can be recorded. 7) To run a new test, press F1 PkHold to clear the peak value. Confirm the “Pk” annunciator is off. Then repeat steps 3-6. Peak Hold kg lbMkNTo n kglbMkNTo nPk kglbMkNTo n kglbMkNTo nPk Example Peak Captured Value Peak Hold kg lbMkNTo n kglbMkNTo n kglbMkNTo n kglbMkNTo n Peak Cleared Value F1 F1 0 ZERO See Section 4.2 for Function Key setup 16 MSI-7300 Operator’s Manual Figure 3-1. Capture Peak Force 3.8 2-UNITS/ 5-UNITS The Fx-2.Unit key will switch the force units be tween pounds force and kilograms force. Selecting the Fx-5.Unit setting will scroll through all available units: lb, kg, tons (U.S. short), metric tons, and kilonewtons.