AC Drive
· A key to achieve automation
· Reduces energy consumption
· Servomotors crucial to so many machines
Performance Features:
· Ratings:
o 1/8 to 5 HP at 240 VAC 1-ph
o 1/8 to 25 HP (ND) at 240 VAC 3-ph
o 1/2 to 25 HP (ND) at 480 VAC 3-ph
· Overload Capacity:
o 150 for 60 sec. (Heavy Duty)
o 120% for 60 sec. (Normal Duty)
· Control Methods:
· V/f Control
o Open Loop Current Vector Control
o PM Open Loop Current Vector Control
o Simple closed loop speed control
· DC injection braking, ramp to stop
· Electronic reversing
· Adjustable acceleration/deceleration: 0.01 to 6000 seconds
· Controlled speed range: 40:1(1) 100:1(2)
· Speed Regulation:
o ± 0.5 to 1% with slip compensation (1)
o ± 0.2 % (2)
· Displacement power factor: 0.98
· Output frequency: 0 to 400 Hz
· Frequency resolution:
o 0.01 Hz with digital reference
o 0.06 / 60 Hz with analog reference