The Vari Speed® A2000 is compact, rugged, reliable and flexible. Available in 1/2 - 3 HP control rating configurations, the Vari Speed A2000 Series incorporates surface mount technology to reduce package size and improve reliability.
The Vari Speed A2000 may be ordered with isolation, NEMA 12 or NEMA 4 Enclosures.AGBØ provides isolation of non-isolated inputs and allows multiple A2000 controls to be controlled by a single process signal. AGBØ also provides isolated open collector with adjustable time delay for current limit indication, and a speed follower output signal when used with a tachometer.
Potentiometer Kit (176B1121)Isolation provides isolation for non-isolated input command signals. Provides the A2000 with the ability to accept various process speed signals and isolated tachometer feedback inputs. Includes a minimum speed adjustment, range adjustment and run status LED.
Isolated open collector sinking output signal with adjustable time delay for current limit indication and a speed follower output signal when used with a tachometer. Allows multiple A2000s to be controlled by a single input signal.
Adjustments:Horsepower Range | 1/8 - 1 (120V); 1 - 3 (240V) |
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Line Voltage | 120/240; 1 phase |
Output: | |
Armature Voltage (VDC) | 0 - 90 (120V); 0 - 180 (240V) |
Field Supply (VDC) | 50/100 (120V); 100/200 (240V) |
Speed Range: | |
Armature Feedback | 50:1 at full torque |
Tachometer Feedback | 200:1 at full torque |
Alarm output | Provides remote indication of an undesirable situation |
Status indicators | Visual indication of primary control status |
Speed Regulation: | |
Armature Feedback | ±2% of base speed (for 95% load change) |
Tachometer Feedback | ±1/2% of set speed (for 95% load change) |
Ambient Temperature | 104 ºF (40 ºC) enclosed; 131 ºF (55 ºC) chassis |
Control Adjustments: | |
Minimum Speed | 0 to 50% control rating |
Maximum Speed | 50 to 110% control rating |
Range (% control rating) | isolation optional |
Acceleration | 0.5 to 5 seconds |
Deceleration | 0.5 to 5 seconds |
IR Compensation | Adjustable (0-25% of rated output) |
Current Limit | 10-150% control rating |
Inputs: | |
Process Signal Input | Optional |
Tachometer Feedback | 20.8 V/1,000 RPM |
Process Output | Optional, speed follower |
Potentiometer | 5K ohm, 1W potentiometer item 176B1121 available as option |
Reference Supply Voltage | 10 Volts |
Status Indicator | LEDs for Power On, Run and Current Limit Status |
UL/cUL Listed | Chassis configurations only |