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MDS-D-SVJ3/SPJ3 Series Specifications Manual
3-6 Diagnosis function
< Spindle drive unit >
Drive unit has a function to D/A output each control data. The spindle adjustment data required to set the
spindle parameters matching the machine can be D/A output. The data can be measured with a high-speed
waveform recorder or oscilloscope, etc.
(1) D/A output specifications
When the output data is 0, the offset voltage is 2.5V. If there is an offset voltage, adjust the zero level
position in the measuring instrument side.
Item Explanation
No. of channels 2ch
Output cycle 0.8ms (min. value)
Output precision 10bit
Output voltage range 0V to 2.5V (zero) to +5V
Output magnification setting -32768 to 32767 (1/100-fold)
Output pin (CN9 connector) MO1 = Pin 4, MO2 = Pin 14, LG = Pin 1,11
9
MO1
LG
2
5
1
6
4
3
10
7
8
CN9
19
MO2
LG
12
15
11
16
14
13
20
17
18
MDS-D-SPJ3
Pin
Pin
Name Name
connector
+2.5 [V]
0 [V]
Speed FB
Current FB
+2.5 [V]
0 [V]
+5 [V]
+5 [V]
Scroll
Memory
Example of D/A output waveform