6
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Allowable Load Inertia Moment and Allowable Regenerative Frequency with Regenerative Unit
>
Power Supply Voltage: 230 VPower Supply Voltage: 200 V
0 4500
2.1
3.6
6.9
3000
0
10
8
6
4
2
Regenerative unit
not required.
SJDE-08(750W)
0 4500
1.1
1.9
3.0
3000
0
5
4
3
2
1
Regenerative unit
not required.
SJDE-04(400W)
0 45003000
0
0.6
0.5
0.4
0.3
0.2
0.1
SJDE-01(100W)
0 4500
3.7
5.3
8.5
3000
0
10
8
6
4
2
Regenerative unit
not required.
SJDE-08(750W)
0 45003000
0
5
1
2
3
4
Regenerative unit
not required.
SJDE-04(400W)
SJDE-02(200W)
1.8
2.8
3.9
1.3
2.4
Load moment of inertia
(
×
10
-4
kg
m
2
)
Speed
(
min
-1
)
Load moment of inertia
(
×
10
-4
kg
m
2
)
Speed
(
min
-1
)
Load moment of inertia
(
×
10
-4
kg
m
2
)
Speed
(
min
-1
)
Load moment of inertia
(
×
10
-4
kg
m
2
)
Speed
(
min
-1
)
Load moment of inertia
(
×
10
-4
kg
m
2
)
Speed
(
min
-1
)
Load moment of inertia
(
×
10
-4
kg
m
2
)
Speed
(
min
-1
)
Load moment of inertia
(
×
10
-4
kg
m
2
)
Speed
(
min
-1
)
Load moment of inertia
(
×
10
-4
kg
m
2
)
Speed
(
min
-1
)
0 45003000
SJDE-01(100W)
0
0.6
0.5
0.4
0.3
0.2
0.1
Regenerative unit
not required.
Regenerative unit
not required.
Regenerative unit
not required.
0 45003000
30 rotations/min
60 rotations /min
30 rotations/min
60 rotations /min
30 rotations/min
12 rotations/min
60 rotations /min
12 rotations/min
6 rotations/min
30 rotations/min
12 rotations/min
6 rotations/min
30 rotations/min
30 rotations/min
12 rotations/min
60 rotations /min
0 4500
0.8
1.8
3000
0
3
2.5
2
1.5
1
0.5
0
3
2.5
2
1.5
1
0.5
Regenerative unit
not required.
SJDE-02(200W)
Note
:
An overvoltage alarm will occur without a required regenerative unit.
The graphs below show the capacity absorbed regenerative energy and allowable
regenerative frequency of the SERVOPACKs with regenerative units connected.
The graphs show values for horizontal axis. For the vertical axis, refer to the JunmaSize+: AC
Servomotor Selection Software.
Selection of Devices
Selection of Devices
Precautions when Selecting Peripheral Devices
Regenerative Units
The rotational energy of driven machines, including servomotor, is returned to the
SERVOPACK as electric power. This is called regenerative power. The power is
absorbed by the smoothing capacitor. When the capacitor has reached its limit in
power absorption, the excess is then consumed by the regenerative unit.
The servomotor is driven in the regeneration state in the following circumstances
:
• While decelerating to a stop during acceleration and deceleration operation.
• During continuous operation on the vertical axis.
•
During continuous operation with the servomotor rotated from the load side (negative load).