Understanding 755TS Part Numbers

Summary

This video offers a comprehensive guide to understanding Rockwell Automation's part numbers, particularly for the PowerFlex 755 TS variable frequency drive. It explains the significance of prefixes and the 18-position base number, detailing how each position defines aspects like drive type, protection options, voltage and connection types, enclosure, and current ratings. The video also highlights the importance of knowing part number structures for compatibility and avoiding incorrect orders, and mentions additional components like interface modules and communication cards that may be required but are not included in the standard part number.

Takeaways

• 📊 Understanding Rockwell Automation VFD catalog part numbers is crucial for ordering the correct components for industrial automation needs.
• 🔢 Rockwell Automation uses prefixes to categorize products into families, with '20 G2' representing a PowerFlex 755 TS variable frequency drive.
• 🛠 Positions 1 through 3 in the part number indicate that the drive is a PowerFlex 755, identified by '20 G'.
• 🌡 Position 4 defines options like corrosive gas protection and cooling type, with the 'XT' option for environments exposed to corrosive gases.
• ⚡ Position 5 is used to select the input voltage type and how the VFD connects to the input voltage source.
• 🏠 Position 6 determines the enclosure type, ensuring compatibility with the environmental NEMA rating.
• 🔌 Position 7 specifies the VFD’s voltage rating, based on the motor's nameplate voltage and input voltage of the drive.
• 📉 Positions 8 through 10 define the drive’s current rating, including overload capabilities for both normal and heavy-duty ratings.
• 🔧 Position 12 offers the option to include an internal IGBT for dynamic braking with external braking resistors.
• 📦 Certain components, such as communication cards, safety cards, and human interface modules, are not included in the standard part number and must be ordered separately.

Q & A

What is the significance of understanding Rockwell Automation VFD catalog part numbers?

Understanding Rockwell Automation VFD catalog part numbers is crucial for effectively navigating their product offerings and ordering the right components for industrial automation needs.

What does the prefix '20G2' represent in Rockwell Automation's VFD part numbers?

The prefix '20G2' represents a PowerFlex 755 TS variable frequency drive, helping users quickly identify the general category of the product.

What does the 'XT' option in position 4 of the part number signify for a PowerFlex 755 TS VFD?

The 'XT' option in position 4 is critical for VFDs installed in environments exposed to corrosive gases, indicating the need for corrosive gas protection and a specific cooling type.

How does position 5 of the part number help in selecting the VFD?

Position 5 is used to select the input voltage type and connection of the VFD to the input voltage source, which is essential for proper installation and operation.

What does the enclosure type specified in position 6 of the part number indicate?

Position 6 indicates the enclosure type of the VFD according to the NEMA rating required by the environment the VFD will be exposed to, ensuring it is suitable for the operating conditions.

Why is the voltage rating in position 7 important for a VFD?

The voltage rating in position 7 is determined by the input voltage of the VFD and the motor nameplate voltage, which is crucial for ensuring compatibility and proper operation.

What does the current rating specified in positions 8 through 10 represent?

Positions 8 through 10 state the VFD drive current rating, determined by the FL or full load amps displayed on the motor's nameplate, which is essential for normal and heavy-duty ratings.

What is the purpose of the 'P' in the part number code?

The letter 'P' in the part number code represents a decimal point, such as in '5P0' which stands for 5.0 amps, used under the 480-volt 60 Hz table.

Why is the 'J' in position 11 significant for the VFD part number?

The 'J' in position 11 signifies that filtering and CM cap jumpers are installed from the factory, which may need to be removed in the field for high-resistant ground (HRG) configurations.

What does the absence of a human interface module in position 13 imply for the VFD part number?

The absence of a human interface module in position 13 indicates that no HIM is included with the VFD part number, which is important for users to know if they need to order this separately.

What additional items are not included in the standard part number of a PowerFlex 755 TS VFD?

Items not included in the standard part number of a PowerFlex 755 TS VFD include human interface modules, communication cards, IO cards, encoder cards, and safety cards, which may need to be ordered separately.

Why is it important to remember what cards have been installed into a VFD when replacing it?

Remembering what cards have been installed into a VFD is important to ensure compatibility, functionality, and to reduce the risk of ordering incorrect parts during replacement.