Sigma II User’s Manual Chapter 8: Ratings and Characteristics
8 - 16
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): 10AA to 20AA servomotors
18 × 18 × 0.8in. (400 × 400 × 20mm): 30AA to50AA servomotors
*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): 10DA to 20DA servomotors
18 × 18 × 0.8in (400 × 400 × 20mm): 30DA servomotors
Voltage 400V
Servomotor Model
SGMSH-
10D
A 15DA 20DA30DA 40DA 50DA
Rated Output
*1
kW 1.0 1.5 2.0 3.0 4.0 5.0
Rated Torque
*1
lb-in
28.2 43 56.4 87 112 140
N-m
3.18 4.9 6.36 9.8 12.6 15.8
Instantaneous Peak Torque
*1
lb-in
84.4 130 169 260 336 422
N-m
9.54 14.7 19.1 29.4 37.8 47.6
Rated Current
*1
A
rms
2.8 4.7 6.2 8.9 12.5 13.8
Instantaneous Maximum Current
*1
A
rms
8.5 14 19.5 28 38 42
Rated Speed
*1
rpm
3000
Maximum Speed
*1
rpm
5000
Torque Constant
(lb-in)/A
rms
11.2 10.2 9.9 10.5 9.49 11.0
(N-m)/A
rms
1.74 2.47 1.12 1.19 1.07 1.24
Moment of Inertia
lb-in-s
2
x 10
-3
1.54 2.19 2.82 6.20 8.50 10.90
kg-m
2
x 10
-4
1.74 2.47 3.19 7.0 9.60 12.3
Rated Power Rating
*1
kW/s
57.9 97.2 127 137 166 202
Rated Angular Acceleration
*1
rad/s
2
18250 19840 19970 14000 13160 12780
Inertia Time Constant
ms 0.97 0.8 0.66 0.76 0.62 0.55
Inductive Time Constant
ms 6.3 6.8 7.3 16.3 14.4 15.2