1391B-AA45

The Allen-Bradley/Rockwell Automation 1391B-AA45 controller is a pulse width modulated servo controller from the Allen-Bradley AC Servo 1391 series. It supports the highest current ratings available in this series (45 Amps continuous and 90 Amps peak), but it is the same compact size as all of the other AC Servo 1391 series controllers, which makes it easy to install. Its inputs are protected from transient voltage and it has a built-in circuit breaker that can open all 3 of the controller?s AC line leads when the power circuitry short circuits. The 1391B-AA45 controller also comes with a power bus supply module that is rated at 300 Volts DC and that has an internal shunt regulator. This controller can tolerate up to 95% relative humidity without condensation and its maximum operating temperature rating is 140 degrees Fahrenheit.