4 - 73
4 Configuration and Wiring
AC Servomotors/Servo Drives 1S-series with Built-in EtherCAT® Communications User’s Manual (I586)
4-4 Regenerative Energy Absorption
4
4-4-1 Calculating the Regenerative Energy
Regenerative energy calculation for a vertical axis is explained.
• In the output torque graph, acceleration in the rising direction is shown as positive (+), and accelera-
tion in the falling direction is shown as negative (-).
• The regenerative energy values in each region can be calculated from the following equations.
Note Due to the loss from winding resistance, the actual regenerative energy will be approximately 90% of the
values calculated from these equations.
Motor operation
Motor output torque
+N1
-N2
t1 t2 t3
T
Eg1
Eg22
Upward movement
Downward movement
TD 2
TL 2
TD 1
Eg21
N
1
,
N
2
: Rotation speed at start of deceleration [r/min]
: Deceleration torque [N·m]
: Torque during downward movement [N·m]
: Deceleration time [s]
: Constant-speed driving time during downward movement [s]
T
D1
,
T
D2
t
1
,
t
3
T
L2
t
2
To Next Page
Loading...
Need help?
General
