Download Obsolete - Steven Engineering

ALTIVAR 16 Drive Controller
Available Torque
50006-360-01B
July 1996
!
CAUTION
MOTOR OVERHEATING
This drive controller does not provide direct thermal protection for the motor. Use of a
thermal sensor in the motor may be required for protection at all speeds and loading
conditions. Consult motor manufacturer for thermal capability of motor when operated
over desired speed range.
Failure to follow these instructions can result in personal injury or equipment
damage.
AVAILABLE TORQUE
Continuous duty:
❏ For self-ventilated motors, motor cooling depends on the speed.
❏ This results in derating for speeds less than 50% of the nameplate motor
speed. For fractional powers ≤ 1/3 hp (250 W), the derating is less (e.g., 20%
instead of 50% at the lowest frequency).
Transient duty:
❏ The possibility of overtorque depends on the maximum amount of transient
current that the drive controller is capable of delivering.
Figure 16 shows the typical torque characteristics of the ALTIVAR 16 drive controller.
Torque
T/Tn
1.50
1.25
1
Self-ventilated motor
2
Force-ventilated motor
3
Transient overtorque
3
1
2
0.75
0.50
1
0.25
(50 Hz) 0
25
50
(60 Hz) 0
30
60
Figure 16
Page 18
Frequency (Hz)
Typical ALTIVAR 16 Drive Controller Torque Characteristics
© 1993 Schneider S.A. All Rights Reserved