Omron R88D-KT50F User Manual

4-54
4-4 Regenerative Energy Absorption
OMNUC G5-SERIES AC SERVOMOTOR AND SERVO DRIVE USER'S MANUAL
4
System Design
The method for calculating regenerative energy on the vertical axis is indicated below.
 In the output torque graph, acceleration in the forward direction (rising) is shown as positive, and
acceleration in the reverse direction (falling) is shown as negative.
 The regenerative energy values in each region can be derived from the following equations.
Note. Due to the loss of winding resistance, the actual regenerative energy will be approx. 90% of the
values derived from these equations.
Motor operation
Motor output torque
+N1
−N2
t 1 t 2 t 3
T
E
g1
Upward movement
Downward movement
TD2
TL2
TD1
Eg21
Eg22g22Eg22E
E
g21
E
g22
E
g2
E
g21
+
E
g22
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

Omron R88D-KT50F Specifications

General

Brand	Omron
Model	R88D-KT50F
Category	Servo Drives
Language	English