SERVO SELECTION AND DATA SHEETS
4.2.1 Ratings and Specifications
— 4-12 —
*
2
These values are reference values.
Note These characteristics can be obtained when the following heat sink (steel plates) are
used for cooling purposes: 150 x 150 x 3 mm (5.91 x 5.91 x 0.12 in.)
24-VDC Servomotors (j25)
Time rating: Continuous
Thermal class: B
Vibration class: 15µm or below
Withstand voltage: 1000 VAC for one minute
Insulation resistance: 500 VDC 10 MΩ min.
Enclosure: Totally enclosed, self-cooled
Ambient temperature: 0°Cto40°C
Ambient humidity: 20% to 80% (non-condensing)
Excitation: Permanent magnet
Drive method: Direct drive
Mounting: Flange method
Standard Servomotors
SGMM Servomotor
A1C31j A2C31j A3C31j
Rated Output
*1
W (HP) 10 (0.013) 20 (0.027) 30 (0.040)
Rated Torque
*1
N¡m
0.0318 0.0637 0.0955
oz¡in
*3
4.5 9.0 13.5
Instantaneous Peak Torque
*1
N¡m
0.0955 0.191 0.2887
oz¡in
*3
13.5 27.0 40.9
Rated Current
*1
A (rms) 2.1 2.0 2.9
Instantaneous Maximum
Current
*1
A (rms) 6.0 5.7 8.6
Rated Speed
*1
min
−1
3000
Instantaneous Maximum
Speed
*1
min
−1
5000
Applicable Encoder --- 2048 P/R incremental encoder
Rotor
Without Brake
¢10
−4
kg¡m
2
0.00354 0.00548 0.00689
Moment of
(×10
−3
oz¡in¡s
2
)
*3
0.0501 0.0776 0.0976
nert
a
J
=
With Brake
¢10
−4
kg¡m
2
0.00479 0.00673 0.00814
GD
2
M
/4]
(×10
−3
oz¡in¡s
2
)
*3
0.0678 0.0952 0.1152
Rated Angular Acceleration
*1
rad/s
2
90000 120000 122300
Rated Power Rate
*1
kW/s 2.90 7.40 11.4
Brake
Rated Voltage V 24 VDC ---
(optional)
*2
Capacity
*3
W 2.0 2.6 ---
Holding
Torque
--- Motor rated torque ---
*
1
These items and torque-speed characteristics are quoted in combination with an SGDF
SERVOPACK at an armature winding temperature of 20°C.
*
2
The brake is used as a holding brake (non-excitation operation). It cannot be used to stop
the Servomotor.
*
3
These values are reference values.
4
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