7 Operation and regulation
HSD S.p.A. © - h0106k01a.fm120718
141
7.8.4 Sensor calibration
The sensors must be calibrated as explained in paragraph 9.3 “Replacing and adjusting the
sensors”
.
The sensors are calibrated and tested by the manufacturer. They do not require any
additional adjustments, except in specific situations specified in this manual.
7.8.5 Use and technical characteristics of the thermal alarm
The electrospindle is provided with thermal alarms located in the stator coils.
Certain models are also equipped with a thermal alarm near the front bearings.
Thermal alarms used with stators
NC (normally closed) bimetal switch
KTY 84-130+ probe
PTC 130 probe
PT 1000 probe
Thermal alarms used for front bearings
PTC 100 probe
On the Technical Datasheet, check the number and type of thermal alarm fitted on your own
model.
The thermal alarm must be connected to the Numerical Control, which should immediately interrupt
the machining operation and stop the rotation of the spindle shaft if an excessive temperature is
detected. For the thermal alarm connection, see paragraph
5.8 “Electrical connections”.
If the shaft stops while the tool is being pushed against the piece being machined,
the spindle bearings may break. If the tool is not immediately moved away from the
piece and the rotation stopped, there is a risk of burning out the stator or damaging
the bearings.
To Next Page
Loading...
