I-8091 User Manual
Version 2.0 04/2003
High Speed = 247 pulse (4166.67*58*0.001024)
The above results means that maximum speed is 500rpm when send
command i8091_SET_VAR(0, 58, 2, 2, 247) to I-8091 card.
Example: Pulse type input Servo Motor
The specification of servo motor is 8000 pulse/rev, max. speed 3000 rpm,
speed resolution 2 rpm.
The required max. pulse rate
PRmax = 3000 rpm*8000/60 = 400,000 pps
The maximum output pulse
Np = 3000rpm/2rpm =1500 pulse number
The DDA cycle can be calculated by follow equation
PRmax =
Np
DDAcycle
ms
* .
+
1 1 024
(
)
400,000 =
1500
1 1 024
* .
DDAcycle
ms
+
(
)
DDA cycle = 3
High Speed = 1638 pulse (400,000*4*0.001024)
The above results means that maximum speed is 3000rpm when send
command i8091_SET_VAR(0, 3, 2, 2, 1638) to I-8091 card.
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