Rockwell Automation 1391ES AC Servo Controller - Manual (Page 52)

8 Chapter
8-54
The 1326 AC Servomotor
Chapter Objectives Chapter 8 describes the operation of a standard 1326 AC Servomotor with
the enhanced capabilities of a Bulletin 1391B-ES AC Servo Controller.
Refer to the 1326 AC Servomotor Product Data for further information on
Allen-Bradley AC Servomotors.
Introduction The 1391B-ES provides additional energy to the 1326 motor, allowing it to
operate at higher speeds without a reduction of torque.
In general, the 1326 motor will follow the speed–torque curve shown in
Figure 8.2
Figure 8.2
Typical Bulletin 1326 Speed–Torque Curve
0
10
20
30
40
50
60
70
80
90
100
0 20 40 60 80 100 120 140 160 180 200
Speed
(% rated rpm)
Torque (% rated)
75%
70%
70%
(Tc) (Tp)
Intermittent
Operation Rated
Operation
Peak Torque with
Nominal Input Line
Voltage
Rated Speed
Peak Torque with
Nominal 15%
Low Input Line
Voltage
Tc – rated torque of motor with windings at rated temperature and an
ambient of 40
°
C. The controller is operating in a rated ambient of 60
°
C.