A-B | 1391-DES45 | Digital AC Servo Drive

Product code: N/A

A-B | 1391-DES45 | Digital AC Servo Drive

Original price was: ¥99,999.00.Current price is: ¥5,652.00.

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🌍Country of origin: USA France Germany Estonia Norway UK

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⚙️ Product Category: Module/Controller/Server/Motor/Touch Screen

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Detailed content

The Allen-Bradley 1391-DES45 is a Digital AC Servo Drive from the 1391-DES series, designed for closed-loop motion control applications. It provides precise speed, torque, and position control for Allen-Bradley 1326 permanent magnet AC servo motors. The drive converts three-phase AC input power into controlled variable AC output for high-performance servo motion systems.

The 1391-DES45 is a high-current single-axis servo amplifier rated at 45A continuous output current. It is commonly used in CNC machinery, material handling equipment, robotics, packaging machines, and automated production systems requiring accurate motion control. The unit supports resolver feedback and provides AQB encoder output options for integration with position controllers.

Product Datasheet

Parameter	Description
Brand	Allen-Bradley (A-B)
Model	1391-DES45
Series	1391-DES Digital AC Servo Drive Series
Product Name	Digital AC Servo Drive / Servo Amplifier
Origin / Place of Origin	USA
Product Status	New Surplus / Original Replacement
Application	Motion Control, Servo Motor Drive
Input Voltage	230 VAC Three Phase (via 1391 Isolation Transformer)
Output Current	45A RMS Continuous
Peak Current	Approx. 90A RMS
Rated Power	Approx. 7.5–10 kW Class (Motor Dependent)
Compatible Motor	Allen-Bradley 1326 Permanent Magnet AC Servo Motor
Feedback Type	Resolver Feedback
Encoder Output	AQB Incremental Encoder Output
Display Interface	Integrated LCD Display and Keypad
Mounting Type	Panel Mount
Cooling Method	Built-in Cooling Fan
Weight	Approx. 15 kg
Discontinued	Yes, legacy product

Common Questions & Answers

Q: What is the function of A-B 1391-DES45?
A: The 1391-DES45 controls servo motor speed, torque, and position through closed-loop feedback control, providing precise motion performance for industrial automation systems.

Q: Which motors are compatible with the 1391-DES45?
A: It is designed for use with Allen-Bradley 1326 permanent magnet AC servo motors with resolver feedback systems.

Q: What are common failure symptoms?
A: Typical issues include overcurrent faults, DC bus alarms, resolver feedback errors, encoder output problems, overheating, display faults, and loss of servo enable signals.

Q: Does the 1391-DES45 require a special transformer?
A: Yes. Allen-Bradley recommends using the appropriate 1391 isolation transformer for system operation and maintaining the correct power configuration.

Q: What should be checked before replacement?
A: Confirm the complete catalog number, motor model, resolver wiring, input power configuration, parameter settings, feedback connections, and stored fault history before installation.

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