YASKAWA S Series User Manual page 48

1
Motor current
Motor speed
Figure 3.4 M o t o r Current - Motor Speed Timing Chart
• W i t h Motor Constantly Cycling through Acceleration, Idling, and
Deceleration without Stopping
The timing chart for motor armature current and motor speed is shown in Fig 3.5. If we assume
that allowable repeatability is n (times per minute), then n can be found using the equation given
below.
T R
n = 286.5 x NR(JM + JL)(1/a — p2/a) [times per minute]
Motor current
Motor speed
Figure 3.5 M o t o r Current - Motor Speed Timing Chart
II a I I
3.3 Allowable Repeatability
0- Ti m e
Time
- T i m e
Time