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Allen Bradley 1388 DC Servo Controllers 1388-AV20

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1388-AV20

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The 1388-AV20 from Allen Bradley is a robust DC servo drive controller designed for high-performance applications. It features a nominal DC output voltage of 150 V and is designed to handle continuous currents of 20 A, with a peak output current capability of 50 A.

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Rockwell Disclaimer: The product is used surplus. DO Supply is not an authorized surplus dealer or affiliate for the Manufacturer of this product. The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because DO Supply is not an authorized distributor of this product, the Original Manufacturer's warranty does not apply. While many Allen-Bradley PLC products will have firmware already installed, DO Supply makes no representation as to whether a PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. DO Supply also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from Rockwell, its distributors, or any other source. DO Supply also makes no representations as to your right to install any such firmware on the product. DO Supply will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.

Technical specifications for 1388-AV20

ManufacturerAllen Bradley
Product TypeDC Servo Drive Controller
Product Line1388 DC Servo Controllers
Part Number1388-AV20
Weight31.50 lbs (14.29 kg)
DC Output Voltage150 V DC nominal
Rated Continuous Current20 A
Peak Output Current50 A
Continuous Power1.5 kW
Peak Power7.5 kW
Min Armature Inductance0.5 mH
Internal Brake Resistor1.5 Ω / 100 W
External Shunt Resistor6 Ω / 675 W
Input Supply120 V AC 3-Phase
Control Supply35.5 V AC C.T.
Drive Efficiency85%
Current Limit Range10 – 250 % of rated
CoolingConvection
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The 1388-AV20 is a DC servo drive controller from Allen Bradley's 1388 series, crafted to provide reliable control in various applications. The device operates with a nominal output voltage of 150 V DC, facilitating precise motion control in servo systems. It is rated for a continuous current of 20 A, accommodating high-demand situations with a peak output current capability reaching 50 A. For reliable operation, the continuous power output is measured at 1.5 kW and can peak at 7.5 kW, ensuring robust performance during peak loads.

This controller's design includes a minimum armature inductance value of 0.5 mH, which is essential for stable operation. It also features an internal brake resistor rated at 1.5 ohms and 100 W, along with an external shunt resistor at 6 ohms and 675 W. The input supply voltage is 120 V AC in a three-phase configuration, supplemented by a control supply of 35.5 V AC C.T., demonstrating its adaptability in various power systems. With a drive efficiency of 85%, the 1388-AV20 minimizes energy losses during operation.

The current limit can be adjusted between 10% to 250% of the rated capacity, providing flexibility in safeguarding the drive against overcurrent issues. The cooling mechanism relies on convection, ensuring the controller operates efficiently within its specified temperature range. The 1388-AV20 is engineered to meet the needs of demanding servo applications, combining durability with precision control.