ASC-090-09 Copley Controls
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The ASC-090-09 is a servo drive manufactured by Copley Controls and is part of the Accelus Servo Drives series. It operates with a continuous current of 3 Amps DC and can reach a peak current of 9 Amps DC for up to 1 second. The drive supports an input voltage range from 20 to 90 VDC and offers a 12-bit analog resolution with a 66 kiloohm input impedance.
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Product Description:
The ASC-090-09 servo drive is manufactured by Copley Controls and is part of the Accelus Servo Drives series. This compact DC-bus amplifier interfaces with motion controllers or PLCs to regulate motor torque, speed, and position in automated equipment such as pick-and-place axes, labeling heads, and small gantries. By converting command signals into pulse-width-modulated power, it closes the current loop directly at the drive and reduces the processing load on higher-level controllers. Its compact format supports installation in machines where panel space is limited, while the DC-bus architecture allows it to share a suitable power source with other control equipment.
The drive delivers a continuous output of 3 A DC and can surge to 9 A DC for short events lasting up to 1 s. The input bus ranges from 20 VDC to 90 VDC, allowing operation with low-voltage mobile equipment or higher-voltage stationary machinery. Internally, the current loop has a bandwidth of 3 kHz, enabling it to respond quickly to load disturbances. Continuous and peak input demands are 3.3 A DC and 10 A DC, respectively, which should be considered when selecting upstream power components. Command channels accept an analog reference of ±10 VDC through a 66 kΩ impedance, while a 1 MHz digital position input accommodates high-speed step-and-direction signals. Encoder feedback supports frequencies up to 5 MHz, helping the drive maintain a low following error when paired with high-resolution feedback devices.
The current loop and PWM carrier operate at 20 kHz, synchronizing current updates with power modulation to reduce control delay. A 12-bit analog command converter provides fine resolution when interpreting reference signals from the motion controller. After modulation, switching ripple appears at 40 kHz, placing much of the associated electromagnetic noise above common servo-control bandwidths. The available carrier arrangement can reduce switching losses in applications where thermal efficiency is more important than acoustic behavior. These response characteristics support fast current regulation during acceleration, deceleration, and sudden load changes without requiring the higher-level controller to manage the inner current loop.
