HSD ES779 - Sensors; Description of the Inductive Sensors; Sensor S1: Tool Holder Coupled Signal

7 Operation and regulation
HSD S.p.A. © - h0106k01a.fm120718
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7.8 Sensors
The electrospindle is equipped with the following sensors:
 digital sensors for monitoring the electrospindle status;
 motor temperature alarm, "thermal alarm" to protect the electrical coils (sensor located on the
stator windings);
 front bearings temperature alarm, “thermal alarm” to monitor the front bearings (sensor
located in the vicinity of the front bearings).
7.8.1 Description of the inductive sensors
Sensor S1: “tool holder coupled” signal
The signal from sensor S1 indicates the presence of the tool holder cone in the closed collet.
Ignore output S1 during the period from the tool release command to the tool coupling
command.
NAME SIGNAL INFORMATION
S1 Tool holder cone coupled
S1+S4*
*
For HSK versions only.
HSK cone locked in the correct position
S2 Collet open (tool-holder cone ejected, piston forward)
S3**
**
Present in certain versions only.
Spindle shaft rotation speed
S5** Piston backward (at upper end stop)
Motor thermal alarm Motor overheated: stop the electrospindle!
Thermal alarm on front
bearings**
Overheated front bearings: stop the electrospindle!