ETH Messtechnik GmbH, Hagstr. 10, 74417 Gschwend, Germany 1.2 Description GMV2-K is a microprocessor-based measuring, control and analyzing unit for the most common screwing and laboratory applications. Due to its compact design and optional battery operation, the unit is very suited for portable use. Measured values can be stored and printed out with date and time of day.
ETH-messtechnik gmbh D-74415 Gschwend P.O. 16 Nr.: 162e Operating Instructions GMV2-K revised: 09.05.2019 Rev.: 0 2.2 Front panel of unit Assessment of torque Overall assessment Memory number Field for Data Transducer full error messages record Key without Parameter set function...
Suitable connection cables are available for different types of torque transducers! This standard GMV2-K unit has been designed for use with active transducers with a ± 1.25V to ± 10V signal. A ±0.5mV/V to ±4mV/V passive input and a digital input are available as an option. Please use the appropriate cable only which can be obtained from ETH.
3.4 Improved support for a number of inputs When the GMV2-K supports inputs for a number of transducer models, each of the available inputs can be selected as required. The GMV2-K socket designation, the transducer model and, if applicable, the measuring range (stndrt / large) will be displayed.
ETH-messtechnik gmbh D-74415 Gschwend P.O. 16 Nr.: 162e Operating Instructions GMV2-K revised: 09.05.2019 Rev.: 0 3.6 Adjustable overload range Menu path: • “Menu -> Param -> Param set -> Change -> Edit” • “Menu -> Measure -> Overload The measuring range can now be much larger than the nominal signal of the transducer. The overload range can be programmed separately for each parameter set from 0% to 100% of the transducer end value –...
3.11 Detecting new transducers and new measuring ranges When ETH transducers that are equipped with a memory chip are used, the GMV2-K detects the removal and insertion of the transducer, and when the measuring range is changed. The device is subsequently zeroed and the system checks that the settings in the parameter set match the transducer settings.
The menu structure is shown in page 39. The actual functions are situated at the end of the "branches". When the unit is first switched on it is in normal operating mode, that is, in level 0 in the menu structure. The GMV2-K is only ready here.
• Different inputs for different transducer types can be selected in the "Type" / “Sig./Ua” menu depending on the configuration level of the unit. GMV2-K is equipped with an active input as standard. A passive input and a digital input are available as an option. If the type is selected, the transducer output signal can be entered in volts or mV/V.
The "After Time" defines how long the peak measuring and angle counting remain active after the power-operated screwdriver has been switched off. The value “0” disables the time period so that the GMV2-K is always ready. It should not be too small. Otherwise, the power-operated screwdriver with its centrifugal mass runs on when the measurement has been stopped.
09.05.2019 Rev.: 0 4.6.3 Settings The GMV2-K settings are described in detail in secs 5 and 6. 4.6.4 Parameter set This is the most important menu. A parameter set must be created (programmed) before measurements can be taken or screws can be screwed.
ETH-messtechnik gmbh D-74415 Gschwend P.O. 16 Nr.: 162e Operating Instructions GMV2-K revised: 09.05.2019 Rev.: 0 Initial settings 6.1 Language Menu path: Menu-> Parameter-> Program-> Initial setting-> Language The unit is fully multilingual. If the language is changed, screen texts, key labels and date format are adapted accordingly.
ETH-messtechnik gmbh D-74415 Gschwend P.O. 16 Nr.: 162e Operating Instructions GMV2-K revised: 09.05.2019 Rev.: 0 6.6 Display illumination Menu path: Menu-> Output-> Display-> Light LCD lighting is turned on and off by pressing the "Light" key. Note: In standby mode, display illumination is switched off after a set period if no keys are pressed (see Sec. 3.13). Press a •...
ETH-messtechnik gmbh D-74415 Gschwend P.O. 16 Nr.: 162e Operating Instructions GMV2-K revised: 09.05.2019 Rev.: 0 7.4 Speed measurements This measuring mode is a variation of the tracking measurement and is not a separate operating mode! It is only a function in its own right in "Menu-> Measure-> Track-> Speed" (parameter set no. 0). During parameter set programming, speed measurement is activated by selecting tracking measurement without angle measurement and finally starting speed measurement with "yes".
ETH-messtechnik gmbh D-74415 Gschwend P.O. 16 Nr.: 162e Operating Instructions GMV2-K revised: 09.05.2019 Rev.: 0 The Entry Editor Introduction The entry editor is used to enter torques, angles, times or to make a selection. Operation is thus standardized. The editor has three important functions: •...
Typically, the parameters are precisely adapted for the screwing task at hand. It makes sense to assemble all individual parameters for a screwing sequence in one parameter set. GMV2-K can save 49 such parameter sets. A wide range of screwing operations can thus be carried out conveniently and in quick succession. When the system is switched on, the last actual set is selected.
ETH-messtechnik gmbh D-74415 Gschwend P.O. 16 Nr.: 162e Operating Instructions GMV2-K revised: 09.05.2019 Rev.: 0 9.4 Parameter set display Menu paths: 1.) Menu-> Parameter-> ParSet-> Display 2.) Menu-> Output-> Display-> Param The function for displaying individual parameters in a set can be called up in two different ways.
Menu-> Parameter -> ParSet-> new To quickly set all necessary parameters for the analyzing unit, a parameter set should be created for this purpose. GMV2-K can store 49 different sets. The sets are not lost when the unit is switched off.
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Overload: This is the percentage by which the measuring range of the GMV2-K is greater than the nominal transducer signal. This allows torques that are greater then the full scale value of the transducer to be measured. It can be used with pulse-type screwdrivers with the correction factor.
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ETH-messtechnik gmbh D-74415 Gschwend P.O. 16 Nr.: 162e Operating Instructions GMV2-K revised: 09.05.2019 Rev.: 0 • Torque Limit min: If the measured torque is less than this limit value, NOK assessment is carried out. Allowed setting range is 5% to 100% of transducer full scale value including overload range, however maximum "Torque Limit max"! Counter-clockwise rotation: unsigned number entry! A correction factor alters the valid setting range!
ETH-messtechnik gmbh D-74415 Gschwend P.O. 16 Nr.: 162e Operating Instructions GMV2-K revised: 09.05.2019 Rev.: 0 • Data record length: The number of similar screwings to be stored in one data record. Many measured values can thus be subdivided sensibly and printing and archiving are easier. Particularly useful for cylinder heads and wheel rims.
ETH-messtechnik gmbh D-74415 Gschwend P.O. 16 Nr.: 162e Operating Instructions GMV2-K revised: 09.05.2019 Rev.: 0 Screwing Technology 10.1 Time-Based Sequence Diagram IO-screwing with shut off based on torque and display of angle Torque / Angle * * time for storing measurements without confirmation : <...
Angle Shut off based on angle is also possible with GMV2-K. This is independent of an additional torque shut off and operates in the same way. Angle counting in the peak operating mode begins when the trigger torque is exceeded. The maximum angle of rotation is measured.
ETH-messtechnik gmbh D-74415 Gschwend P.O. 16 Nr.: 162e Operating Instructions GMV2-K revised: 09.05.2019 Rev.: 0 Notes: • If the measured value lies outside the setpoint values (NOK), storing must be confirmed, which in turn interrupts the erasing procedure. • If the torque drops temporarily during screwing, the erasure time must be selected sufficiently large.
ETH-messtechnik gmbh D-74415 Gschwend P.O. 16 Nr.: 162e Operating Instructions GMV2-K revised: 09.05.2019 Rev.: 0 12 Printing out the stored measured values Menu path: Menu-> Output-> RS 232-> Store Measured values are always printed out here in sets and are ordered firstly according to the used parameter set number and secondly according to the data record number.
You can select the number of the serial port being used from a list. The displayed baud rate must be the same as the baud rate selected in GMV2-K. We recommend using a baud rate of 4800.
Now you can transfer single measured values, a single data record, or all data records to the GMV2-K. In “Menu – Output – RS232 – Store” you can select which data you wish to transmit. You can then see the measured values being scanned into the table on the PC.
The analog output is only scaled to ±5 V when the overload range is set to “7%” (standard). However, it is then independent of the input and from the input sensitivity! When the GMV2-K is zeroadjusted, the output signal is zeroed! Peak storage is not performed.
The 10-pin, rectangular connector on the cable is inserted in the INPUT socket on the Digimatic printer. The 9-pin SUB-D connector on the cable is connected with the RS-232 C socket on the GMV2-K. DP-1 HS must be selected on the GMV2-K under "Menu / Parameter /Setting / Initial setting / Printer". The baud rate need not be set.
The old limits are printed out when you press the CL followed by the TOL.LIMIT key. Wait until the printout is finished, then quickly confirm with "yes" on the GMV2-K. Now press the data key on the printer. The "NO DATA" error message may appear.
Error in the settings has been rectified. Warning EPROM Memory Error in internal GMV2-K program memory Major fault The calibration interval has elapsed. Please return the GMV2-K for calibration Warning Calibr. date Calibr. memory Error in calibration memory has been eliminated.
ETH-messtechnik gmbh D-74415 Gschwend P.O. 16 Nr.: 162e Operating Instructions GMV2-K revised: 09.05.2019 Rev.: 0 15 Pin Assignments The description of the pin assignments refers to the unit and are on the rear, as seen from outside. Active and digital transducer socket...
ETH-messtechnik gmbh D-74415 Gschwend P.O. 16 Nr.: 162e Operating Instructions GMV2-K revised: 09.05.2019 Rev.: 0 IN / OUT connector (optional) (7-pin connector) Standard Assignment Shutdown hydraulic unit opener Shutdown hydraulic unit turnkey Shutdown hydraulic unit root Notes: • Inputs and outputs as well as the socket are optional and not available on all devices.
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