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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.
- Compact, extremely rugged speed drive for standard permanent
magnet or would-field DC motors
- 120 or 240 VAC line input
- Nine models rated for 1/8 to 3 HP
- Available in chassis, NEMA 12 or NEMA 4 enclosure
- LED status indicators for Power On, Run, and Current Limits
- Chassis units are UL and cUL listed
| Specifications |
| Horsepower Range |
1/8 - 1 (120V); 1 - 3 (240V) |
| Line Voltage |
120/240; 1 phase |
Output:
Armature
Voltage (VDC)
Field Supply
(VDC) |
0-90 (120V); 0-180 (240V);
50/100 (120V); 100/200 (240V) |
Speed Range:
Armature
Feedback
Tachometer Feedback |
50:1 at full torque
200:1 at full torque |
Speed Regulation:
Armature
Feedback
Tachometer Feedback |
±2% of base speed (for 95% load
change)
±1/2% of set speed (for 95% load change) |
| Ambient Temperature |
104°F (40°C) enclosed;
131°F (55°C) chassis |
Control Adjustments:
Minimum
Speed
Maximum Speed
Range
(% control rating)
Acceleration
Deceleration
IR
Compensation
Current Limit |
0 to 50% control rating
50 to 110% control rating
isolation optional
0.5 to 5 seconds
0.5 to 5 seconds
Adjustable (0-25% of rated output)
10-150% control rating |
Inputs:
Process
Signal Input
Tachometer Feedback
Tachometer Follower |
Optional
20.8 V/1,000 RPM
Optional |
| 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 |
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A2000 configurations: (clockwise from lower left)
Stand Alone, Enclosure, Heatsink, and Plate
| DC Motors |
| Permanent magnet DC
motors are optimized for use with Vari Speed A2000 Series
DC controls. All motors are in stock for prompt delivery.
- Designed to industry-standard NEMA frame sizes
- 13 models rated from 1/8 to 5 HP
- Easy access to brushes for quick brush replacement
- Non-vented and fan-cooled versions
- UL recognition on all modes; most models cUL rated
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| Options |
| All options can be installed in the field. |
AGB0: Provides isolation of non-isolated inputs
and allows multiple A2000 controls to be controlled by a single
process signal plus isolation open collector with adjustable
time delay for current limit indication, and a speed follower
output signal when used with a tachometer.
176B1121, 5K OHM, 1W Potentiometer |
AC000 NEMA 12 enclosure with:
• Run/Jog/Stop
switch
• Indicators for Power On, Run and Current Limit |
| Operating Conditions |
| AC Line Voltage: Rated voltage ±10% |
| AC Line Frequency: 48 to 62 Hz |
| Elevation: Up to 3,300 ft. without derating |
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