5.5.2Velocity Profile

In a trapezoidal motion, the acceleration of the moving part follows the acceleration type set by the #4 Selecting acceleration type parameter until it reaches the feed velocity. Hereafter, the move is continued with the feed velocity, then decelerates and stops according to the deceleration type set by the #5 Selecting deceleration type parameter. The feed velocity varies depending on the operation.

The acceleration and deceleration types can be selected separately. There are two options for acceleration and deceleration: a constant acceleration type and an S-shaped type (where the acceleration/deceleration follows a second order spline). Generally, the S-shaped type can limit vibrations in the machine better, but the peak torque or peak thrust at acceleration/deceleration become greater and a correspondingly larger motor torque or motor thrust will be required.

The acceleration/deceleration time can also be selected separately. The values of the #7 Acceleration time during a trapezoidal move and #8 Deceleration time during a trapezoidal move parameters are set to values equivalent to the maximum velocity shown in the #357 Maximum velocity monitor. The actual acceleration/deceleration time becomes the value obtained by multiplying the maximum velocity by the velocity ratio during a trapezoidal move. By doing so, the same acceleration can be maintained without changing #7 and #8 even when the feed velocity setting is changed.

Waiting for trigger

Waiting for trigger

#7 Acceleration time during a trapezoidal move

Actual acceleration time

[Constant

acceleration]

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

200ms/div

 

 

 

 

 

 

 

 

200ms/div

 

 

 

NORM:5kS/s

 

 

 

 

 

 

 

 

NORM:5kS/s

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

#8 Deceleration time during a

 

 

 

 

 

 

 

 

 

 

 

trapezoidal move

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Maximum velocity

 

 

 

Maximum velocity

 

 

 

 

 

 

 

 

 

 

 

 

Actual deceleration time

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Feeding Velocity

 

 

 

 

 

Feeding Velocity

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

[Acceleration]

[Deceleration]

Waiting for trigger

#7 Acceleration time during a trapezoidal move

Actual acceleration time

[S-shaped]

Waiting for trigger

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

200ms/div

 

 

 

 

 

 

 

200ms/div

 

 

 

 

 

NORM:5kS/s

 

 

 

 

 

 

 

NORM:5kS/s

 

 

 

 

 

 

 

 

 

 

 

 

#8 Deceleration time during a

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

trapezoidal move

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Maximum velocity

 

 

 

Maximum velocity

 

 

Actual deceleration time

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5

 

Feeding Velocity

 

 

 

 

Feeding Velocity

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

[Acceleration]

[Deceleration]

5-15

Page 69
Image 69
Parker Hannifin G2 manual Velocity Profile, Constant Acceleration

G2 specifications

Parker Hannifin G2 is a state-of-the-art platform designed to transform the way industries approach fluid and motion control. As a leader in motion and control technologies, Parker Hannifin has integrated cutting-edge features into the G2, making it a standout choice for various applications, including aerospace, industrial automation, and hydraulic systems.

One of the main features of the Parker Hannifin G2 series is its modular design. This allows users to customize the configuration according to their specific needs, facilitating enhanced versatility and efficiency. The modular approach supports different valve and actuator options, enabling seamless integration with existing systems and allowing for future expansions.

The G2 is equipped with advanced connectivity options, including Ethernet and fieldbus solutions. These technologies enable real-time data exchange and remote monitoring, ensuring optimized performance and reduced downtime. Users can leverage this connectivity to implement preventive maintenance strategies, thereby increasing the overall reliability of their operations.

Another notable characteristic of the G2 platform is its intelligent control algorithms. These algorithms allow for enhanced process automation, ensuring that systems can adapt dynamically to changing operating conditions. The result is improved energy efficiency and lower operational costs, critical factors in today’s competitive market.

Durability is a key aspect of the G2 series as well. Constructed with high-quality materials, the platform is designed to withstand harsh industrial environments, making it ideal for applications where reliability is paramount. Additionally, its compact footprint enables easy installation and integration into existing setups without requiring extensive modifications.

The user interface of the G2 is exceptionally user-friendly. With intuitive design and advanced graphical displays, operators can easily access performance data, diagnostics, and system parameters. This ease of use not only improves operational efficiency but also enhances training processes for new personnel.

In summary, Parker Hannifin G2 represents a significant advancement in fluid and motion control technology. Its modular design, advanced connectivity, intelligent control algorithms, durability, and user-friendly interface make it a compelling choice for industries seeking to enhance their operations. With these features, the G2 empowers businesses to achieve their efficiency, reliability, and performance goals.