46
ENCODER FEEDBACK CONTROL—A500(L)
!
Torque Characteristic of the Standard Motor with encoder (Example: SF-JR Standard Motor with encoder
(4 poles))
*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 encoder) 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 encoder) when continuous 100% torque is required for 2.2kW or
more at 600r/min or less.
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
CAUTION
1. To provide 150% torque from 0Hz to the rated speed of the motor the inverter should be one
rank higher than the motor.
2. Cyclic operation when the inverter and motor have the same capacity is possible but typically
only 50% torque can be produced.
3. 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).
[
] [
]
Speed [r/min]
(*1)
Short-duration maximum torque
1.5kW or less
50%ED
2.2kW or more
50%ED (*3)
150
100
50
33
0
900
1800
3600
T
o
rqu
e
[%
]
(*2)
Speed [r/min]
(*1)
Short-duration maximum torque
Tor
que [
%
]
2.2kW or more
Continuous
operation torque
(*4)
150
100
82
33
0
1800
3600
1500
600
40
180
1.5kW or less
Continuous
operation torque
