Bosch 150 AC Specifications Page 76

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• DOK-DIAX01-MAIN+2AD+1M-ANW1-EN-E1,44 • 07.97
3. Controller Functions
The spindle speed is limited to the amount (±) of the selected maximum
speed, and, on reaching the limit speed, is also acknowledged via the
LIMIT signal output.
The controller calculates the limit speed of the motor associated with the
limit speed of the spindle with the reduction ratio (GEAR IN/GEAR OUT).
If the speed command value is excessively high, the message N
actual
=
N
command
" (signal output N=CMD) does not appear.
3.13 Spindle Monitor
The spindle monitor detects any defective or dangerous condition when
the machine is first started, if this is due to a malfunction in the
mechanical transmission components.
The controller monitors breaks in the mechanical connection between
the spindle and the spindle feedback. The controller also detects the
absence of signals from the spindle feedback but when the motor is
running.
Spindle monitoring requires a spindle feedback unit connected to the
controller.
Acknowledging maximum
speeds
Condition for "N
actual
=
N
command
"
Figure 69: Control inputs and signal output for spindle monitor
Note:
For very slow spindle speeds (spindle coasting), the spindle monitor still
signals the OK status.
Faults on the spindle encoder line can be detected as increments and the
OK status is signalled despite the fact that the spindle is stationary (check
function precisely during commissioning).
Spindelüberwachun
g
Legend:
1 = +24V
0 = 0V
= signal step
= any control
state
^
^
^
^
27
23
24
25
26
28
29
30
31
32
33
34
35
36
37
3
1
1
POS 2
E-STOP (nur bei RAC)
RF
RUN
POS 1
MD-RED
OSCILATE
PAR 1
PAR 2
LIMIT 1
LIMIT 2
LIMIT 4
SPEED 1
SPEED 2
EXT POS
AS (KDA/TDA only)
1
0
X2 control inputs
control unit
X2 signal output
15 SPINDLE CONTR
0 = fault
control unit
^
1
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