
B–63833EN–1/02
9. SPINDLE SPEED FUNCTION
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#7 #6 #5 #4 #3 #2 #1 #0
3709 SAM
[Data type] Bit
SAM The sampling frequency to obtain the average spindle speed
0 : 4 (Normally, set to 0.)
1 : 1
3730 Data used for adjusting the gain of the analog output of spindle speed
[Data type] Word
[Unit of data] 0.1 %
[Valid data range] 700 to 1250
Set data used for adjusting the gain of the analog output of spindle speed.
[Adjustment method] (1)Assign standard value 1000 to the parameter.
(2)Command the maximum spindle speed.
(3)Measure the output voltage.
(4)Assign the value obtained by the following equation to parameter No.
3730.
Set value=
× 1000
Measured data (V)
10 (V)
(5)After setting the parameters, command the maximum spindle speed,
confirm that the output is 10V.
NOTE
This parameter needs not to be set for serial spindles.
3731 Compensation value for the offset voltage of the analog output of the spindle speed
[Data type] Word
[Unit of data] Velo
[Valid data range] –1024 to +1024
Set compesation value for the offset voltage of the analog output of the
spindle speed.
Set value =–8191 Offset voltage (V)/12.5
[Adjustment method] (1)Assign standard value 0 to the parameter.
(2)Command “0”.
(3)Measure the output voltage.
(4)Assign the value obtained by the following equation to parameter No.
3731.
Set value=
12.5
–8191 × Offset voltage (V)