Allen-Bradley AC Servo Controller 1391B-AA45
Allen-Bradley AC Servo Controller 1391B-AA45
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Condition: Surplus inventory. Photos reflect the item’s current condition and details. If the item arrives in a condition that differs from what is shown or described, it may be eligible for return or refund.
Used in machine tool and automated equipment applications, the Allen-Bradley Bulletin 1391 AC Servo Controller carries catalog number 1391B-AA45, Series B. This is a single-axis, pulse width modulated servo controller designed for closed-loop positioning systems that require precise position and motion control of linear or rotary machine members.
The nameplate specifies an AC input of 230V, 3-phase, 50/60 Hz at 38 amps, with a control transformer input of 36V, single-phase, at 5.5 amps. AC output is rated at 210V, 3-phase, 0 to 200 Hz, 45 amps, 14 kW. The maximum symmetrical RMS short circuit current rating is 1300 amps. Per manufacturer published specifications, the unit provides a nominal 300V DC power bus output, with continuous current of 45A RMS and peak current of 90A RMS, corresponding to 15 kW continuous and 30 kW peak output power.
The 1391B-AA45 includes an integral circuit breaker rated at 38A RMS that opens all three AC line leads under power circuit short conditions. An internal shunt regulator is included as part of the power bus supply module. The controller is designed with an open frame and internal heat sink configuration and incorporates an integral fan rated at 50 CFM. Operating temperature range is 0 to 60 degrees Celsius with non-condensing humidity tolerance up to 95%. This unit was manufactured in the USA and is discontinued by the original manufacturer.
Stock # 0226-755
Surplus inventory sold as described. Please review photos, specifications, and compatibility details carefully before purchase. Reach out with any questions prior to ordering.