Fagor DDS Series Hardware Manual page 209

The power required in this case P
S p e e d
M o t o r
F. H5/7
Frictional load. Required power.
µ
Friction coefficiente
m
Table mass in kg
L
Power needed to accelerate and decelerate an asynchronous
spindle motor
There are three methods to control the acceleration and deceleration
process of the machine spindle:
 Acceleration limited by time.
F. H5/8
Acceleration limited by time.
T. H5/2 Acceleration limited by time.
Method
Acceleration limited by time.
Control
Spee d i nc r eas es l i nea r ly i n ti me unt il t he co mmand s pee d i s
reached.
Comment
The acceleration torque is constant.
 Different acceleration ramps depending on the speed reached.
F. H5/9
Different accelerations depending on speed.
T. H5/3 Different accelerations depending on speed.
Method
Different accelerations depending on speed
Control
Linear acceleration avoiding abrupt variations in transmitted
torque.
Comment
Emulation of the square sine function for speed by using ramps.
is calculated as follows:
F
L o a d
·m
·V
L
P
=
F
6120·

Mechanical efficiency
V Linear speed in m/min
speed
adjust
0
Ta
speed
adjust
0
Ta
  Selection criteria
(kW)
5.
time
time
DDS
HARDWARE
Ref.1912
· 209 ·