Mitsubishi Electric FR-A700 Series, Technical Manual

Page: 462 / 550

496
SELECTION
Standard Specifications of Constant-Torque Motor (Motor dedicated to V/F control)
3.3.3 Low-vibration motor
When compared to a general-purpose motor, a low-
vibration motor is designed to be insusceptible to time
harmonics and space harmonics and is improved in
machining accuracy to minimize gap imbalance. Hence,
this type of motor has achieved low oscillation of a
maximum 5 m full-amplitude and a maximum 1.5G
oscillatory acceleration. It is also wider in continuous output
range than a general-purpose motor.
4-pole motor
2-pole motor
Standard Specifications of Low-Vibration Motor
z Amplitude (Full amplitude)
z Oscillatory acceleration
Output
(kW)
Number
of
poles
Type
Frame
Number
Continuous
operation torque
Insulation
Inverter
Power
supply
Frequency
range
Example of
applicable
inverter
(N m)
0.4
4
Totally-enclosed
fan-cooled type
SF-JRC
71M 2.12
Class B
200V/50Hz
200V/60Hz
220V/60Hz
6 to 120Hz
(base
frequency
60Hz)
FR-A720-0.4K
0.75 80M 3.98 FR-A720-0.75K
1.5 90L 8.0 FR-A720-1.5K
2.2 100L 11.7
Class F
FR-A720-2.2K
3.7 112M 19.6 FR-A720-3.7K
5.5 132S 29.2 FR-A720-5.5K
7.5 132M 39.8 FR-A720-7.5K
11 160L 58
6 to 100Hz
FR-A720-11K
15 180M 80 FR-A720-15K
18.5 180L 98 FR-A720-22K
22 180L 117 FR-A720-30K
30 200L 159
6 to 65Hz
FR-A720-37K
37 Totally-enclosed
forced cooling type
*
SE-JRC-FV
200L 196 FR-A720-45K
45 225S 239 FR-A720-55K
* Power supply of the forced cooling fan is three-phase 200/200/200V, 50/60/60Hz.
Torque (%)
(60Hz reference)
100
50
0
20 30 60 120
Low-vibration
indicates 60%
ED rating.
Mitsubishi
general-purpose
motor
Frequency (Hz)
100
67
0
20 30 60 90
Frequency (Hz)
Mitsubishi
general-purpose
motor
Low-vibration
indicates 60%
ED rating.
Torque (%)
(60Hz reference)
Continuous Rating Range
Type
Fra
m
e
Num
b
er
Out
put
(kW
) Number
of
Poles
Insulation
Power
Supply
Frequency
Range
(Hz)
Totally-
enclosed
fan-cooled
type
SF-JRL
SF-JRF(V)L
80M 0.75
2 Class F 200V/50Hz
200V/60Hz
220V/60Hz
or
400V/50Hz
400V/60Hz
440V/60Hz
20 to 90
Standard
frequency
60Hz
90L 1.5
100L 2.2
112M 3.7
Totally-
enclosed
fan-cooled
type
SF-JRL
SF-JRF(V)L
80M 0.75
4
Class B
20 to 120
Base
frequency
60Hz
90L 1.5
Class F
100L 2.2
112M 3.7
*1 Set the torque boost ([
Pr. 0
]) of the minimum value.
*2 Set 0 in Electronic thermal O/L relay ([
Pr. 9
]) and
install an external thermal relay.
Amplitude
( m)
3
2
1
20 30 40 50 60 70 80 90 100 110 120
Frequency (Hz)
1.0
0.5
20 30 40 50 60 70 80 90 100 110 120
Frequency (Hz)
Oscillatory
acceleration (G)
Oscillation Characteristics (Example of 3.7kW 4P)