User guide

Publication 8720MC-IN001D-EN-P — December 2002
D-2 8720SM Motor Specifications and Performance Curves
Common Specifications
The following specifications are common to all the drive amplifiers
and motors. The following conversion factors apply to the tables:
•
Torque: 1 newton meter = .7376 ft-lb = 8.85 in-lb
•
Inertia: 1 kg-meter
2
= 23.7 lb-ft
2
= 8.85 in-lb sec
2
•
Power: 1 horsepower = .746 kW
•
Weight 1 kg = 2.205 lbs
8720MC 750V dc Input Drive Amplifier Specifications
Specification Type Value
Frequency range 0 to ±500 Hz
2 pole AC motor speed range 0 to ±30,000 RPM
Voltage at maximum speed 505V RMS
Max Velocity loop bandwidth (-3db)
108 Hz (MPL-B8xxx/-B9xxx motors)
215 Hz (8720SM motors)
Current Loop Bandwidth
1270 Hz (MPL-B8xxx/-B9xxx motors)
1100 Hz (8720SM motors)
Peak Current (1 minute) 150% rated
Speed regulation (% max. speed) 0.01% with 100% disturbance
Rated operating temp (Open) 0 to 50° C
Rated operating temp (enclosed) 0 to 40° C
Storage temperature -40 to 70° C
Ambient humidity 5 to 95%
Altitude 1000 m (3300 ft)
Vibration as displacement .0006
Shock 15 in. @ 1G
Agency Certification
UL™ /CUL™/CE