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Sigma II User’s Manual Chapter 8: Ratings and Characteristics
8 - 19
8.1.5 SGMUH Servomotors
Rating and Specifications for Standard Servomotors
SGMUH Standard Servomotor Ratings and Specifications
*1
These specifications and torque-motor speed characteristics are quoted in combination with an
SGDH servo amplifier operating at an armature winding temperature of 20°C.
Note:
These characteristics have been calculated with the following aluminum heat sinks attached for cooling
:
Heat sink dimensions
12 × 12 × 0.5in (300 × 300 × 12mm): 10D A to 20D A
18 × 18 × 0.8in (400 × 400 × 20mm): 30D A
• Time Rating: Continuous • Insulation Class: Class F
• Vibration Class: 15µm or below • Withstand Voltage: 1,800V
ac
for one minute
• Insulation Resistance: 500V
DC
,
10M
Ω
minimum
• Enclosure: Totally enclosed, self-cooled,
IP67 (except for through-sections of the shaft)
• Ambient Temperature: 0 to 40°C • Ambient Humidity: 20% to 80% (with no
condensation)
• Excitation: Permanent magnet
• Mounting: Flange method
• Drive Method: Direct drive
Servomotor Model
SGMUH-
10D A 15D A 30D A
Rated Output
*1
kW 1.0 1.5 3.0
Rated Torque
*1
lb-in 14.1 21.7 43.5
N-m 1.59 2.45 4.9
Instantaneous Peak Torque
*1
lb-in 57.6 97.5 190
N-m 6.5 11 21.5
Rated Current
*1 A
rms
2.7 4.1 8.1
Instantaneous Maximum Current
*1 A
rms
8.5 47 28
Rated Speed
*1
rpm 6000
Maximum Speed
*1
rpm 6000
Torque Constant
(lb-in)/A
rms
7.2 7.4 7.2
(N-m)/A
rms
0.81 0.83 0.81
Moment of Inertia
lb-in-s
2
x 10
-3
1.54 2.19 6.2
kg-m
2
x 10
-4
1.74 2.47 7.00
Rated Power Rating
*1
kW/s
14.5 24.3 34.3
Rated Angular Acceleration
*1
rad/s
2
9130 9910 7000
Inertia Time Constant ms
0.87 0.70 0.72
Inductive Time Constant ms
7.1 7.7 17.3