The Allen Bradley 1391-DES45-DI-AQB is a servo controller driver that is part of the 1391 product family.

It has a rated input voltage of 240 VAC, three-phase, with a continuous output current of 3.45 RMS and a peak current of 0.90 amps.

Output power is 0.15 kW and peak output power is 0.30 kW. The drive also features an integrated display and encoder output.

The 1391-DES45-DI-AQB is a microprocessor-based digital servo drive primarily used with Allen-Bradley’s 1326 servo motor.

The servo drive is designed in a compact form factor, however, the drive supports add-on components as part of the drive’s scalability features.

Key features of the 1391-DES45-DI-AQB include an integrated display for local configuration of servo drive parameters.

It also has encoder outputs with options including 2048. 1024. 512 and 256 pulses per motor revolution. The higher the pulses, the higher the resolution and the more accurate the feedback.

The servo drive’s front panel displays a Human Interface Module (HIM) with five (5) numeric keypads for navigating and modifying drive parameters.

It also features an integrated status LED that blinks green when faults and low bus voltages are detected.

The LED flashes green when a fault and low bus voltage are detected, stabilizes in green when there is no fault and the bus voltage is at the correct level, and flashes red when a drive fault occurs.

It also has an enable LED that is a steady green when the enable input is off. When the enable input is on, the enable LED is not illuminated.

The TB2 and TB3 interface terminals are located on the bottom of the servo drive; TB2 is used to connect external signals and TB3 is used to terminate the encoder output signal.

The integrated fuses and circuit breakers are located on the top of the drive, along with TB4. TB5. and the duty cycle selector switch. Although this drive has internal protection circuitry, it is recommended that external protection be installed.