Allen Bradley 1391-DES45-DI-AQB

The 1391-DES45-DI-AQB is a Digital Servo drive that is microprocessor based primarily used with Allen-Bradley’s 1326 Servo motor. This servo drive is designed in compact form however, this drive supports add-on components that is part of the drive’s scalability feature.

Main featured of the 1391-DES45-DI-AQB include an integrated display that is used for local configuration of the servo drive’s parameters. It also has an Encoder output with optional selections including 2048, 1024, 512 and 256 pulses per motor revolution. Higher pulses provide higher resolution and higher feedback accuracy.

The front panel of this servo drive display the Human Interface Module (HIM) with Five (5) digital keypad to allow navigation and modification of the drive’s parameters. It also has an integral status LED that flashes green when no fault is detected and low bus voltage; Steady Green when no fault and bus voltage is at the right level; Flashes Red when a drive fault has occurred. It also has an Enable LED which is steady green when enable input is closed. When the enable input is open, the enable LED is not illuminated.

The TB2 and TB3 interface terminals are located at the bottom of the servo drive. TB2 is used for interfacing external signal while TB3 is utilized to terminate encoder output signals. Integrated fuses and circuit breaker as well as TB4, TB5 and duty cycle selector switch are situated on top of the drive. Though this drive has internal protection circuitry, external protection is recommended for installation. If using an isolation transformer, Allen-Bradley recommended appropriate 1391 Isolation transformers as the use of 3rd party transformer will void the UL listing of the equipment.

The Allen-Bradley 1391-DES45-DI-AQB is a digital and programmable single-axis pulse-width modulated AC servo drive. The 1391-DES series of drives are designed to control the speed and torque of an AC servomotor at 33-50% more than their rated speed. The 1391-DES45-DI-AQB is designed for an input power rated at 230V AC (3-phase), with frequency of 50-60 Hz. The 1391-DES45-DI-AQB is equipped with a cooling fan which is rated at 50 CFM (unloaded). Its nominal bus voltage is 300V DC and its continuous current is 45A RMS with a peak current going up to 90A RMS. The continuous power output is rated at 15 kW with a peak power output going up to 30 kW. The encoder output can be varied as required to provide 2048/1024/512/256 pulses/motor revolution. The 1391-DES45-DI-AQB includes an integrated 2-line, 16-character LCD screen and a 5-button keypad for programming. To prevent any damage, the drive should be mounted in an enclosure that is clean, dry and ventilated by cooled and filtered air. Enclosures that are vented with ambient air must have the appropriate filtering to protect the 1391-DES45-DI-AQB against contamination from oils, coolants, dust, and condensation. The operating temperature range is 32 to 40 Deg. Fahrenheit and 5-95% relative humidity (non-condensing). The power dissipated during operation varies with the load: at 20% it is 104 W, at 40% it is 208 W, at 60% it is 312 W, at 80% it is 416 W and at 100% it is 520 W. An integrated 3-pole magnetic circuit breaker protects the DC bus supply, input rectifier, and power circuitry against overcurrent. The dimensions of the drive are 482.6 x 157.5 x 293.6 mm and it weighs 15.4 kg.