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Torque Characteristic of the Standard Motor with PLG (Example: SF-JR Standard Motor with PLG (4 poles))
With Reference to 1800r/min (60Hz) Torque
Cyclic operation mode setting
[When the inverter used has a capacity one rank higher
than that of the motor and the rated voltage is input]
Continuous operation mode setting
[ When the inverter used has the same capacity as
that of the motor and the rated voltage is input]
0 900 1800 3600
Torque [%]
Speed
[
r/min
]
(
Note 1
)
150
100
30
20
Short-duration
maximum tor
q
ue
1.5kW or less
2.2kW or more
(
Note 3
)
50%ED
(
Note 2
)
150
100
75
20
0 1800 36001500600
30
Speed
[
r/min
]
(
Note 1
)
Short-duration
maximum tor
q
ue
Torque [%]
2.2kW or more
(
Note 4
)
Continuous
operation tor
q
ue
1.5kW or less
Note: 1. The maximum speed is 1) 0.4kW to 7.5kW: 3600r/min, 2) 11kW to 30kW: 3000r/min, 3) 37kW to 55kW: 1950r/min.
2. Continuous, repetitive operation of 50%ED can be performed in cycle time of 10 minutes. Note that the maximum
continuous operation time is 5 minutes.
3. Use the constant-torque motor (SF-JRCA with PLG) when 50%ED with 100% torque is required for 2.2kW or more
at 900r/min or less.
4. Use the constant-torque motor (SF-JRCA with PLG) when continuous 100% torque is required for 2.2kW or more at
600r/min or less.
5. To provide 150% torque from 0Hz to the rated speed of the motor the inverter should be one rank higher than the
motor.
6. Cyclic operation when the inverter and motor have the same capacity is possible but typically only 50% torque can
be produced.
7.Continuous operation when the inverter capacity is one rank higher than the motor will produce the same results as
when the inverter and motor capacity are the same (as shown above).