ETH-messtechnik gmbh
D-74415 Gschwend P.O. 16
Nr.: 162e
Operating Instructions GMV2-K
revised: 09.05.2019
Rev.: 0
Subject to change without prior notice
28
10.3 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. The angle can be reset by clearing the peak value or by zeroadjusting the transducer.
The allowed angle range is ±6,000 degrees. Clockwise or counter-clockwise rotation is possible with peak measuring. Shut
off based on angle is delayed without rise in torque (screw breaking off).
Note:
•
Angle measurement is only available in version "W"!
11 Storing measured values
11.1 The measured-value storage
One thousand measured values can be stored in GMV2-K for the documentation and evaluation of screwings. In addition to
torque a measured value contains further information, such as, angle of rotation, OK/NOK assessment, and date and time of
measurement. The values can be saved manually with the save key or automatically by means of an erasure time. The
storing of NOK screwings that are outside the limit values must be confirmed. The memory values are permanently stored
even after the unit has been switched off; they can be displayed at any time, printed out or transmitted to a personal
computer. The measured values are linked to the appropriate parameter set as they depend on the selected settings. Thus the
parameter set is protected against changes as soon as values are stored with it. The numbering of memories (ST:) and the
subdivision into data records (DR:) facilitate the assignment of measured values to the workpiece. Similar screwings are
assembled to a group in one data record, see next section.
The remaining memory, that is the number of free memories, is displayed in the lower status line on the screen with "SR:"
(see sec. 7).
11.2 The data record
Typically, the same screwing operation must be repeated a fixed number of times for each workpiece in assembly lines.
This number can be set as the length of the data record in the parameter set. Screwings are the same when they are
performed in succession with the same parameter set and on the same day.
Especially when many measured values are stored subdividing them in data records facilitates selection for display and
printout, as described in the following sections.
If a data record is fully assigned, a new record is selected automatically. "ST:" defines the screw for the workpiece as the
"ST:" numbering of the memory starts at the beginning with each data record. The data record number thus defines the
workpiece. One ID text and one operator number may also be entered and saved per data record see sec. 9.8.
If the started data record is not fully assigned when the parameter set is changed, the remaining spaces are filled with "No
measurement". The data record number is counted from "1" with every new parameter set.
If the number of screwings is unknown, any number can be set with the length of the data record "0" (standard setting!). A
new data record is then started automatically when parameters or the date are changed. A length of "1" is not
recommended.
11.3 Memory Settings
Menu path:
Menu-> Parameter -> ParSet-> change-> edit
The following settings are available:
•
"no":
Storage disabled. This is mandatory for parameter set "0". However, you can then print out the values shown on
the screen with the key "Output" (level 0).
•
"manual":
The "Store" key stores the current indicated value in the measured-value memory. For peak measuring the
peak must then be reset with "erase".
•
"erasure time":
Automatic storing and erasing the peak value when an adjustable time period has elapsed. The
erasure time starts when the torque drops below the maximum value. The allowed range is 0.1 to 240 seconds (2
minutes).
•
"RS 232"
: Similar to erasure time, however the measured value is not stored, but is printed out.
•
“Contin
”:
”:
“continuously” can be selected in tracking measurements. Then, “Memory” is selected for internal storing
or “RS-232” for continuous measurement output. The time defines the time period.
The permissible range is 0.5 seconds to 900 seconds (15 minutes).
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