HSD ES939 - Status Modes of the Electrospindle and Corresponding Outputs; Output of Sensor S3: Shaft Idle Signal

HSD
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6.9.2 Status modes of the electrospindle and corresponding outputs
i
The “ON” condition corresponds to an output equal to the supply voltage of the sensors;
the “OFF” condition corresponds to an output of 0V.
ISO
versions
HSK
versions
STATE S1+S5(*) S1+S4+S5(*) S2 S3 (*)
Collet open OFF OFF ON IDLE
Collet closed but tool-
holder cone absent
OFF OFF OFF IDLE
Tool-holder cone
blocked correctly
ON ON OFF
IDLE or
STARTED UP
(**)
(*) S3 and S5 not present on some versions
(**) Depending on the operating status of the machine
The shaft of the electrospindle can only be rotated in the “Tool-holder cone blocked
correctly” state; if the outputs of S1+S5 or S1+S4+S5 move to “OFF”, stop the
electrospindle shaft rotation.
6.9.3 Output of sensor S3: “shaft idle” signal
Sensor S3 supplies two “ON” pulses and two “OFF” pulses at each rotation of the shaft, as shown
in the figure below.
+ 24 V
0 V
0
giri
rev
1
i
Above a certain speed range, the output of S3 may appear to be permanently "ON",
returning to normal when the speed falls below this threshold. This phenomenon is not a
malfunction and depends on the performance of the CNC.
i
Ignore the S3 signal during the tool changing phase, during which it may appear to be in
either of the two states (“ON” or “OFF”)
i
The S3 sensor is not present in certain versions.