FMS EMGZ470A.W, Руководство по эксплуатации

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Operating Manual EMGZ470A/472A
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9.2 Simulating Method, Calibration using Initial Parameters
The following instructions are referring to a setup and calibration inside the machine.
The material tension will be simulated by a weight (fig. 10).
Offset and Gain calibration is done in the measuring amplifier using the initial
parameter (ref. also to „8.3 Initial Parameter“).
•
Insert material or a rope loosely to the machine.
•
Set initial parameter byte 0 to „1“. The measuring amplifier calculates
automatically the new offset value.
•
Reset initial parameter byte 0 to „0“.
•
Load material or rope with a defined weight (fig. 10)
•
Set initial parameter byte 1+2 to a measuring value corresponding to the applied
weight (ref. to „8.3 Initial Parameter“). The measuring amplifier calculates
automatically the new gain value.
•
Reset initial parameter byte 1+2 to „0“.
•
Offset and Gain are now fail safe stored in the measuring amplifier.
Note
The main feedback value (HIW) must also be capable to indicate correctly overload
values. Therefore the calibration must be done in a way that the HIW range (±32767)
is not fully exhausted at nominal load. We recommend to set Offset and Gain so that
loading the sensor at nominal force will give a feedback value of 10000.
9.3 Simulating Method, Calibration using Control Byte (Module
1 only)
The following instructions refer to a setup and calibration inside the machine. The
material tension will be simulated by a weight (fig. 10).
Offset and Gain calibration is done in the measuring amplifier using the control byte
and the main reference value (module 1 only; ref. also to „8.5 Process Data“).
•
Insert material or a rope loosely to the machine.
•
Set control byte of a request telegram to „25h“. The measuring amplifier calculates
automatically the new offset value. The new offset value is transmitted in the
corresponding response telegram (ref. to „8.5 Process Data“).
•
Load material or rope with a defined weight (fig. 10)
•
Enter control byte of a request telegram to „2Dh“ and the main reference value
(HSW) to a measuring value corresponding to the applied weight (ref. to „8.3
Initial Parameter“). The measuring amplifier calculates automatically the new gain
value. The new gain value is transmitted in the corresponding response telegram
(ref. to „8.5 Process Data“).
•
Offset and Gain are now fail safe stored in the measuring amplifier.
•
If required, you can switch now to module 2 (feedback with status) (ref. to „8.4
Configuration“).