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36

MAINTENANCE

7.  Calibration

7.1 

CLOSED-BOX CALIBRATION

The 3411 features closed-box calibration.  The advantage of closed-box calibration is that the user 
does not have to disassemble the case or make any mechanical adjustments to the 3411.

The torque readout can be calibrated using external reference sources.  Correction factors for offset 
and gain are stored in nonvolatile memory.  They remain in effect until the user or the calibration 
house updates them.

7.2 

CALIBRATION SCHEDULE

Calibrate the 3411:

•  After any repairs are performed.
•  At least once a year; more frequently to ensure required accuracy.

7.3 

BASIC CALIBRATION PROCESS

The basic calibration process consists of three steps which must be performed in the following order:

1.  Initial Procedure
2.  Torque Offset and Gain
3.   Frequency Gain

Items needed for calibrating the 3411:

•  External voltage reference of 0 to 10 volts DC
•  Digital multimeter (DMM)
•  Frequency generator capable of generating a square wave 0V to 5V
•  Frequency meter capable of a measuring square wave 0V to 5V

Both measuring instruments should have a accuracy of 0.005% or better. 

7.3.1 

i

nitiaL

 c

aLiBration

 p

roceDure

1.  Allow the 3411 to stabilize in an environment with:
 

•  An ambient temperature of 18°C to 25°C.

 

•  Relative humidity less than 80%.

2.  Turn on the 3411.
3.  Allow the 3411 to warm up for at least 30 minutes.

7.3.2 

t

orque

 o

ffSet

 

anD

 g

ain

Connect the external voltage reference common to the input connector.

•  Pin 13 of the transducer connector

Connect the external voltage reference high to the input connector.

•  Pin 14 of the transducer connector

Содержание 3411

Страница 1: ...Model 3411 Torque Display User s Manual...

Страница 2: ...bited TRADEMARKS LabVIEW is a trademark of National Instruments Corporation National Instruments is a trademark of National Instruments Corporation Windows is a registered trademark of Microsoft Corpo...

Страница 3: ...d proper operation make sure that all Magtrol Torque Transducers and electronic products are earth grounded 2 Make sure that all torque transducers and motors under test are equipped with appropriate...

Страница 4: ...quencies updated 8 1 05 13 15 2nd Edition Appendix C Computer controlled operation prior to version X added Appendix C 05 13 15 2nd Edition Digital filter equations updated 8 1 05 13 15 2nd Edition Ch...

Страница 5: ...UTPUTS 7 3 INSTALLATION CONFIGURATION 9 3 1 POWERING UP THE 3411 9 3 1 1 LINE VOLTAGE 9 3 1 2 SELF TEST 9 3 1 3 DEFAULT DISPLAY 10 4 MANUALLY CONTROLLED OPERATION 11 4 1 SETTING DESIRED OPERATING PARA...

Страница 6: ...OCEDURE 35 7 3 2 TORQUE OFFSET AND GAIN 35 7 3 3 SPEED DAC CALIBRATION 36 7 3 4 FREQUENCY GAIN 36 8 THEORY 38 8 1 FILTER PARAMETERS 38 9 TROUBLESHOOTING 39 APPENDIX A SCHEMATICS 40 A 1 3411 SCHEMATIC...

Страница 7: ...ure 4 6 User Setup 13 Figure 4 7 IP Address View 14 Figure 4 8 Filter Selection Setup 14 Figure 4 9 Contrast Setup 15 Figure 4 10 Analog Speed BNC Output Setup 15 Figure 4 11 TM Invert Setup 16 5 COMP...

Страница 8: ...erview of the 3411 Torque Transducer Display The mechanical and electrical characteristics of the unit are given here Chapter 2 CONTROLS Description of the elements located on the front and rear panel...

Страница 9: ...This is used to draw the operator s attention to information directives procedures etc which if ignored may result in damage being caused to the material being used The associated text describes the...

Страница 10: ...d for use with Magtrol s TM In Line Torque Transducers and TF Torque Flange Sensors the new features of the 3411 include Isolated USB Interface Ethernet connectivity Quadrature decoding high resolutio...

Страница 11: ...tware is a user friendly LabView executable program used to automatically collect torque speed and mechanical power data The data can be printed displayed graphically or quickly saved as a Microsoft E...

Страница 12: ...10VDC direct from transducer Speed Output BNC 5VHC pulse buffered from transducer or 10VDC analog ENVIRONMENT Operating Temperature 5 C to 50 C Relative Humidity 80 Temperature Coefficient 0 001 5 C t...

Страница 13: ...serted in series between a Magtrol controller and any Magtrol dynamometer or torque transducer Speed torque and index signals are then outputted through BNC connectors to an oscilloscope or other DAQ...

Страница 14: ...00 can provide complete PC control via the USB or optional IEEE 488 or RS 232 interface With up to 500 readings per second the DSP7000 is ideally suited for both the test lab and the production line T...

Страница 15: ...SETUP TARE RESET TARE The following table provides a quick reference on how to use each button For more detailed information refer to Chapter 4 Manually Controlled Operation Button Function POWER SWI...

Страница 16: ...ay The possible selections include oz in oz ft lb in lb ft g cm kg cm mN m cN m N m daN m POWER UNITS Use to change the units that the power reading is displayed in Use the arrow keys to scroll throug...

Страница 17: ...s and receptacles for connecting to appropriate equipment Figure 2 2 Rear Panel 2 2 1 Rear Panel Inputs and Outputs Attach Ethernet cable here Figure 2 3 Ethernet Connector ETHERNET Isolated USB Conne...

Страница 18: ...ch IEC approved power cord here Connect transducer signal cable here 14 13 12 11 10 9 8 TORQUE SIGNAL TORQUE COMMON BITE N C TACH A N C 5 V COM 7 5 V OUT 6 N C 5 24 VDC COM 4 24 VDC COM 3 24 VDC 2 TAC...

Страница 19: ...to reduce the risk of electric shock 3 1 1 Line Voltage The 3411 will operate with either of the following power sources without any modifications 120 V 50 60 Hz 230 V 50 60 Hz 3 1 2 Self Test Note T...

Страница 20: ...loaded firmware and FPGA versions POWER TORQUE SPEED MAGTROL 3411 Figure 3 2 Title Display 1 up to 1 minute POWER TORQUE SPEED FW REVXX FPGA REVXX Figure 3 3 Title Display 2 5 seconds 3 1 3 Default Di...

Страница 21: ...button to save and return to the Default Display 4 1 2 Pulse Per Rev Setup Select the encoders pulses per revolution value 1 Press the PULSE PER REV button The display will appear as follows POWER TOR...

Страница 22: ...ions include Watts kW hp 1 Press the POWER UNITS button The display will appear as follows POWER TORQUE SPEED XX Figure 4 4 Power Units Setup 2 Press the UP DOWN arrow buttons until desired power unit...

Страница 23: ...is active the connected transducers output voltage will be displayed in the following format POWER TORQUE SPEED BITE X XXX Figure 4 5 BITE Setup 4 1 5 2 User Setup The 3411 allows the user to save up...

Страница 24: ...tons until FILTER SELECTION shows in the display 3 Press ENTER to go to the filter selection menu The display will appear as follows POWER TORQUE SPEED XX HZ Figure 4 8 Filter Selection Setup 4 Press...

Страница 25: ...range 1 x 1 0 106 1 Press the SYSTEM SETUP button 2 Press the UP DOWN arrow buttons until SPEED BNC OUTPUT shows in the display 3 Press ENTER to go to the speed BNC output setup menu 4 Press the UP DO...

Страница 26: ...desired TM invert selection appears in the display 5 Press ENTER to save and return to the Default Display 4 1 6 Tare Button The torque offset voltage may be changed using the tare button The torque...

Страница 27: ...11 to any available USB port on your personal computer using the provided USB cable Once plugged in your computer will automatically begin searching for the appropriate drivers to use Clicking on the...

Страница 28: ...vers for the USB Communications Device Class COM port can be found on the Torque 7 installation disc included with your 3411 They can also be obtained from our webpage http www magtrol com by followin...

Страница 29: ...20 Magtrol Model 3411 Torque Display Chapter 5 Computer Controlled Operation OPERATION 4 Open Windows Device Manager...

Страница 30: ...orque Display Chapter 5 Computer Controlled Operation OPERATION 5 Left click over the USB Communications Class Device 3411 device and select the update driver software option 6 Select Browse my comput...

Страница 31: ...22 Magtrol Model 3411 Torque Display Chapter 5 Computer Controlled Operation OPERATION 7 Select Let me pick from a list of device drivers on my computer 8 Select Ports COM LPT and click next...

Страница 32: ...23 Magtrol Model 3411 Torque Display Chapter 5 Computer Controlled Operation OPERATION 9 Select Have Disk 10 Locate the torque3411 inf on your file system and select it to install...

Страница 33: ...24 Magtrol Model 3411 Torque Display Chapter 5 Computer Controlled Operation OPERATION 11 Choose Torque 3411 Serial Port and click Next 12 Ignore the warning and click yes to continue installation...

Страница 34: ...er personal computer By default the 3411 is assigned an IP address by DHCP To discover what IP address it has been assigned click the SYSTEM SETUP button on the front panel and select the IP ADDRESS V...

Страница 35: ...button except for the following caveats Whenever you are prompted to input a number such as the torque scale or encoder pulse per revolution you cannot use the arrow buttons to change this number You...

Страница 36: ...rrent username and password If the username or password is forgotten it can be reset to the default admin admin by sending the AUTH command over USB section 6 3 Figure 5 2 3411 Administration Settings...

Страница 37: ...n of the firmware installed Figure 5 4 Update Firmware 5 4 MAG NET COMMANDS In order to use the Mag NET command set you must first establish a connection with the 3411 There are currently three method...

Страница 38: ...e instrument descriptor will follow this format USB board manufacturer ID model code serial number USB interface number INSTR For the 3411 it will appear as USB0 0xxxxx 0xxxxx units serial number INST...

Страница 39: ...indicate the polarity of the torque and may be used as a shaft direction indicator where 1 With TM INVERT off R will indicate positive L will indicate negative The speed will equal the displayed valu...

Страница 40: ...ero TS Sets Tare Reads current torque and uses as tare value UE Sets encoder units to Values for range from 1 to 99999 UP Sets the Power Units Values for are 0 hp 1 W 2 kW UR Sets display torque units...

Страница 41: ...g the static ip address has no effect Contact your network administrator for details IPAD Read current IP address Typical Return 192 168 14 35 GATEWAY XXX XXX XXX XXX Sets the gateway address used You...

Страница 42: ...DHCP is already disabled UPD may be used to change a single static network setting i e only the netmask or only the gateway Contact your network administrator for details WHOST XXXXXXXXXXXXXXX Save n...

Страница 43: ...e is FN X XXX FN X XXX Command to set the Negative Full Scale gain User enters X XXX meter reading Response is CAL COMPLETE CALS Command to start frequency Calibration Response is FREQ XXXXX XX prompt...

Страница 44: ...t 32 bit value Integer 2 Display speed Speed derived by using a 0 2 second gate slow Display value Float 3 Torque display Torque derived by using a heavily average slow Display value Float 4 Quadratur...

Страница 45: ...ps which must be performed in the following order 1 Initial Procedure 2 Torque Offset and Gain 3 Frequency Gain Items needed for calibrating the 3411 External voltage reference of 0 to 10 volts DC Dig...

Страница 46: ...NC Output 3 Send the CALDAC command 4 The response will be READ ZERO 5 User will read the meter and send the ZDAC XX XXX command where XX XXX represents the voltage read This offset is immediately app...

Страница 47: ...3411 Torque Display Chapter 7 Calibration MAINTENANCE 5 Send the command FREQ XXXXXX XX where X XXXX is your speed meter reading in Hz 6 The response will be CAL COMPLETE 7 Send the command MODE0 to...

Страница 48: ...ed and averaged samples average applied to filter at a rate of 488 28125 Hz Filter Cutoff Frequencies 2 Hz 5 Hz 10 Hz 20 Hz 50 Hz 100 Hz Filter Output Equivalent to second order Butterworth analog fil...

Страница 49: ...atch the unit s programmed set of instructions Use correct command and format Mechanical power reads much higher or lower than expected Torque units or scale factor is incorrect Set torque input units...

Страница 50: ...01uf C19 12VA COM 12VA COM 10 Volt Input 10 over range 30 1k R13 1nF C9 120pf C10 10k R10 12 7k R14 71 5k R11 787 R8 2k R9 5VD 3 3VD 3 3VD COM 2 4 5 3 U3 74VHC1G14 12VD IN 1k R12 D2 30 1k R6 1nF C3 12...

Страница 51: ...PRESSED SAVE DATA IN CURRENT SETUP SYSTEM SETUP PRESSED TARE PRESSED REST TARE PRESSED UNIT USES CURRENT READING AS ZERO UNIT USES FACTORY CALIBRATED ZERO AS ZERO RED LED ON RED LED OFF INPUT NUMBER...

Страница 52: ...ED USER SETUP SELECTED NO NO BITE SIGNAL LOW FOR 5 SECONDS AND VALUE IS DISPLAYED YES YES SYSTEM SETUP SCROLL TO DESIRED SELECTION IP ADDRESS VIEW SELECTED NO YES FILTER SETUP SELECTED NO YES CONTRAST...

Страница 53: ...a wall outlet switch or router Turn the power to the 3411 on if already on power cycle Use the IP ADDRESS VIEW system setup option to discover the IP address assigned to your 3411 Refer to section 4...

Страница 54: ...ings web page In the home web page press TSP to display the torque speed and power web page Select the Periodic check box so that power torque and speed values will refresh at 0 5 second intervals Pre...

Страница 55: ...ger as a Virtual COM port C 2 1 USB Driver Setup for WindowsXP Windows7 32BIT Copy the 3411 USB driver files from the Torque 7 CD onto the local drive of your PC The files are located in the 3411 DRIV...

Страница 56: ...NDICES Figure C 6 Installation Options Window 4 Click the Next button The following screen will display The driver will be installed Figure C 7 Installation Finish Window 5 Click Finish button Found n...

Страница 57: ...B Driver directory into local drive of your PC 1 Run CP210xVCPInstaller_x64 exe 2 Power on the 3411 A window in the right corner will show Installing device driver software and then show Magtrol 3411...

Страница 58: ...ment a quotation listing all the necessary parts and labor costs if any will be faxed or e mailed to you 6 After receiving your repair estimate provide Magtrol with a P O number as soon as possible A...

Страница 59: ...ardenville Parkway Buffalo New York 14224 USA Phone 1 716 668 5555 Fax 1 716 668 8705 E mail magtrol magtrol com MAGTROL SA Route de Montena 77 1728 Rossens Fribourg Switzerland Phone 41 0 26 407 3000...

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