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Fanuc/FANUC A20B-0008-0280
recount
The transformer coil resonates on its own
Reason: When there is a load current passing through the coil, the load electrogenerated magnetic flux leakage causes the coil to vibrate.
Determination method:
The noise of the transformer is on the high side, and the noise is low.
When the load of the transformer reaches a certain level, noise begins to appear, sometimes it does not appear.
Countermeasure:
Tighten all the screws of the cushion block to increase the axial compression force of the coil.
2) Loosen all the screws of the cushion block, loosen all the bolts on the outgoing copper bar and the neutral copper bar, shake the low-voltage coil by 3-5mm, translate the high-voltage coil by 3-5mm, and then tighten all the bolts.
Load characteristics issues.
Cause: Distortion of transformer voltage waveform (such as resonance phenomenon) and noise generation.
Determination method:
In addition to the noise of the transformer itself, the noise is also mixed with a "gurgling" sound.
2. During operation, there will be a sharp increase in the instantaneous transformer noise, and it will soon return to normal.
3. Check whether there is a rectifier device and a frequency conversion device in the load. A20B-0008-0280
There are nonlinearity, hysteresis, non-repeatability, temperature, zero deviation scale, and the influence of temperature, which determines the measurement accuracy. The higher the accuracy, the higher the price.
Fourth, the temperature range of the pressure transmitter.
In general, a transmitter needs to calibrate two temperature confirmation sections, one of which is the normal working temperature, and the other is the normal working temperature range, which refers to the temperature range of the transmitter in the normal working state. If the temperature compensation range is exceeded, the performance specifications of the application may not be met.
The temperature compensation range is typical and is smaller than the operating temperature range. The A20B-0008-0280 transmitter in this range is sure to meet its expected performance specifications. Its output is affected by temperature changes in two ways, one is zero drift and the other is full-range. For example: full load range +/-X%/°C, reading range +/-X%/°C, in! In the absence of these parameters, uncertainties in use are introduced: +/-X% of full scale in the out-of-temperature range, +/-X% of the out-of-temperature compensation range.
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