INVT DA180-S2R8SG0 Operation Manual page 93

DA180 series basic AC servo drive
Numerator of
P0.25 electronic gear ratio
Denominator of
P0.26
electronic gear ratio
Numerator of
P0.27 electronic gear ratio
Numerator of
P0.28 electronic gear ratio
Numerator of
P0.29 electronic gear ratio
Electronic gear ratio concept: For any pulse input, the quantity and frequency of pulse actually
received by the drive can be changed by multiplying a certain coefficient. This coefficient is
electronic gear ratio. It can be divided into two parts: numerator and denominator:
Electronic gear ratio = g1
Of which,
g1: indicates the numerator of the electronic gear ratio
g2: indicates the denominator of the electronic gear ratio;
The following is the schematic diagram for the electronic gear ratio:
Input pulse train
Example: The following is an example where 1 pulse is
equivalent to a feed rate of 10μm:
Mechanical specifications:
Feed of the ball screw Pb =10mm
DEC ratio n=3/5
Resolution of the servo motor encoder =10000
The electronic gear ratio is as follows:
g 1 Pt
  ·

0
g 2 S
Setting range
1
Setting range
Setting range
2
Setting range
3
Setting range
4
/
g2
Electronic
gear ratio
Pt

  ·  
10 10

0
n Pb
Default
31
0–(2 -1) 0
Default
31
1–(2 -1) 10000
Default
31
0–(2 -1) 0
Default
31
0–(2 -1) 0
Default
31
0–(2 -1) 0
Deviation
counter
Feedback pulse
伺服电机
10000 50
· 
3

(3 5) 10 3
-87-
Applicable
Unit
- P
Applicable
Unit
- P
Applicable
Unit
- P
Applicable
Unit
- P
Applicable
Unit
- P
Intermediate
Motor
link
Encoder
Servo
motor
n
Function codes
mode
mode
mode
mode
mode