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Chapter 10 Adjustment
10–2
10-1 Measurement of adjustment data
The MDS-B-V14L servo driver has a function to D/A output the various control data. To adjust the
servo and set the servo parameters that match the machine, it is necessary to use the D/A output and
measure the internal status of the servo. Measure using a hi-coder, synchroscope, etc.
10-1-1 D/A output specifications
Item Explanation
No. of channels 2 ch.
Output cycle
222
µ
s (min. value)
Output precision 8-bit
Output voltage range 0 to +5V
Output scale setting ±1/258 to ±128 times
Output pins CN9 connector
Channel 1 = pin 9
Channel 2 = pin 19
GND = pin 1, 11
10-1-2 Setting the output data
No. Abbrev. Parameter name Explanation
SV061 DA1NO D/A output channel 1 data No.
SV062 DA2NO D/A output channel 2 data No.
Input the No. of the data to be output to each D/A output channel.
Interpolation unit
This is an CNC internal unit. The command unit (input unit) will be as shown on the right.
10-1-3 Setting the output scale
No. Abbrev. Parameter name Explanation Setting range
SV063 DA1MPY D/A output channel 1
output scale
–32768 to 32767
SV064 DA2MPY D/A output channel 2
output scale
The scale is set with a 1/256 unit. When 256 is set, the scale will be
1-fold.
Analog output voltage = {(output data value) × (SV063 or SV064 setting unit) × 76.3/1,000,000} + 2.5V
No. CH1 output data Standard output unit
-1 D/A output non-selection
0 Speed feedback m/sec
1 Current command Rated (stall) current %
2 Current command Rated (stall) current %
3 Current feedback Rated (stall) current %
4 Speed feedback low-order m/sec
5 Speed feedback high-order m/sec
6 Position droop low-order Interpolation unit
7 Position droop high-order Interpolation unit
8 Position F
∆
T low-order
Interpolation unit/
NC communication cycle
9 Position F
∆
T high-order
Interpolation unit/
NC communication cycle
10 Position command low-order Interpolation unit
11 Position command high-order Interpolation unit
12 Feedback position low-order Interpolation unit
13 Feedback position high-order Interpolation unit
125 Test output saw-tooth wave 0 to +5V
126 Test output rectangular wave 0 to +5V
127 Test output 0V
No. CH2 output data Standard output unit
-1 D/A output non-selection
0 Current command Rated (stall) current %
1 Current command Rated (stall) current %
2 Current command Rated (stall) current %
3 Current feedback Rated (stall) current %
4 Speed feedback low-order m/sec
5 Speed feedback high-order m/sec
6 Position droop low-order Interpolation unit
7 Position droop high-order Interpolation unit
8 Position F
∆
T low-order
Interpolation unit/
NC communication cycle
9 Position F
∆
T high-order
Interpolation unit/
NC communication cycle
10 Position command low-order Interpolation unit
11 Position command high-order Interpolation unit
12 Feedback position low-order Interpolation unit
13 Feedback position high-order Interpolation unit
125 Test output saw-tooth wave 0 to +5V
126 Test output rectangular wave 0 to +5V
127 Test output 0V
Command
unit
Interpolation
unit
10µm 5µm
1µm 0.5µm
0.1µm 0.05µm