What is PointStop Control Technology?

Rockwell Automation's PointStop Control technology stops the motor load consistently without encoder indication. Additionally, it enables point-to-point positioning capability and closed-loop input with an additional encoder card. The 25B-D017N104 Allen-Bradley PowerFlex 525 AC Drive comes with PointStop Control as an enhanced feature for the day-to-day operation of your AC motors.

Volts per Hertz (V/Hz) Control Mode

Volts per hertz is a standard control mode for variable frequency drives. In V/Hz, the frequency of the output voltage is adjusted proportionally to the desired speed of the motor, and the magnitude of the output voltage is adjusted proportionally to the frequency of the output voltage.

Sensorless Vector Control (SVC) Mode

SVC is a standard Allen-Bradley 25B-D017N104 PowerFlex 525 AC Drive control mode. This control mode is a type of vector control that does not require an encoder or other feedback device to provide position and speed feedback. Instead, the drive uses algorithms to estimate the position and speed of the motor based on the current and voltage signals.

With SVC, the drive can provide more precise speed control than the V/Hz control mode, making it useful for applications requiring higher accuracy, such as positioning or tension control. Overall, SVC is a versatile control method that can be used in various applications requiring precise motor control without an encoder.

Closed Loop Velocity Vector Management

This control mode is a type of vector control that uses feedback from an encoder or other feedback device to precisely control the velocity and position of the motor. The drive can adjust the output frequency and voltage in real-time based on the feedback signals, ensuring that the motor operates at the desired speed and position.

Compared to V/Hz and SVC control modes, closed-loop velocity vector management provides even higher accuracy and dynamic response. It is typically used in applications requiring precise motor speed and position control, such as robotics, automation, and other high-performance systems.

Permanent Magnet Motor Coordination Control Mode

The permanent magnet control mode is specifically designed for controlling permanent magnet (PM) motors, which are a type of synchronous motor that use permanent magnets in the rotor rather than a wound rotor.

In PM motor coordination control mode, the drive can accurately control the speed and torque of the PM motor, providing high efficiency and performance. This control mode is often used in applications that require high precision and fast response, such as machine tools, robotics, and other industrial automation systems.

25B-D017N104 Drive Specifications

The AC drive is rated for an output voltage of 480 volts. It has a power rating of 7.5 kilowatts and a total current of 17 amps. It has a 10 HP horsepower rating. At three different voltage ranges—30 volts DC, 125 volts AC, & 240 volts AC—it has a resistivity rating of 3 amperes.

At the voltage levels of 30 volts DC, 240 volts AC, & 125 volts AC, it has two inductive rates of 5 a & 3 a. Additionally. It has two programming settings. The controller's standard display includes an integrated keyboard for easy actions, commands, and LED lights to monitor network machine statuses.

The power factor for the drive is 0.98, and it has a panel-style attachment for simple installation and interfacing. For safety, the drive must be enclosed in an open-type IP20 container measuring 8.66 by 4.29 by 7.24 inches in height, width, and depth.