Allen Bradley PowerFlex 753 AC Drive 20F11ND8P0AA0NNNNN

The Allen Bradley 20F11ND8P0AA0NNNNN is a compact and efficient AC drive from the PowerFlex 753 series. This model is ideal for small to mid-size motor control applications up to 5 horsepower. It features a high efficiency rating of 97.5% and an IP20 rated open-type enclosure. The 20F11ND8P0AA0NNNNN includes versatile input options with both AC precharge and DC terminals.

Drive Identification & Power Ratings

• Brand: Allen Bradley (Rockwell Automation)
• Model: 20F11ND8P0AA0NNNNN
• Series: PowerFlex 753 AC Drive
• Input Power: Three-Phase, 380-480 V AC (+10%/-10%) / 650 V DC
• Input Type: AC Input with Precharge and DC Terminals
• Output Power (Normal Duty): 3.7 kW / 5 HP
• Output Power (Heavy Duty): 3 kW / 4 HP (estimated)
• Output Current (ND): 8 Amps @ 480V, 60 Hz
• Output Frequency Range: 0 to 590 Hz
• Control Methods: Volts/Hertz (V/Hz), Sensorless Vector Control

Key Features & Internal Configuration

• Enclosure: NEMA/UL Type Open, IP20 Rated (front protection)
• DC Terminals: Provided for connecting an external DC power source or bus.
• Dynamic Braking: Internal Braking Transistor Included (requires external resistor).
• EMC Filtering: Filtered with Common Mode (CM) Capacitor Jumper Removed.
• Efficiency: 97.5% at rated current and nominal line voltage.
• Cooling Method: Convection or fan cooling, depending on load.
• Operator Interface: No Human Interface Module (HIM) included (blank cover).
• Communication Ready: Supports optional add-on communication adapters.
• Frame Size: Frame 1 or 2 (compact size)

Physical & Environmental Specifications

• Unit Weight: 2.27 kg (5.00 lbs)
• Mounting Style: Panel or Wall Mount (open type)
• Operating Temperature: 0°C to 50°C (32°F to 122°F) without derating.
• Storage Temperature: -40°C to +70°C (-40°F to 158°F)
• Relative Humidity: 5% to 95% (non-condensing)
• Altitude: Suitable for operation up to 1000m without derating.
• Vibration & Shock: Designed to withstand typical industrial panel environments.

Electrical Performance & Protection

• Overload Capacity: 150% of rated current for 60 seconds.
• Starting Torque: Up to 180% of motor rated torque in sensorless vector mode.
• Speed Regulation: ±0.5% of base speed (sensorless vector).
• Carrier Frequency: Adjustable for optimized motor performance and noise.
• Protections: Overcurrent, overvoltage, undervoltage, ground fault, short circuit, motor overload, overtemperature.

Installation & Wiring Guidelines

• Mount the drive on a suitable vertical surface inside a control panel or clean industrial area.
• Maintain proper spacing from other heat-producing components for adequate cooling.
• For AC input, connect three-phase power to L1/R, L2/S, L3/T terminals.
• For DC input, connect the DC source to the DC+ and DC- terminals.
• Connect the motor leads to output terminals T1/U, T2/V, T3/W.
• Install an external dynamic braking resistor to the B1/B2 terminals if fast stopping is required.
• Provide proper branch circuit protection (fuses or circuit breaker) sized per the drive manual.
• Ensure a solid, low-impedance ground connection to the drive's PE (Protective Earth) terminal.

Packaging & Shipping Details

• Package Contents: 1 x Allen Bradley 20F11ND8P0AA0NNNNN AC Drive Unit
• Documentation: Quick Start instructions included.
• Shipping Weight: Approximately 3 kg (6.6 lbs) with packaging.
• Shipping Methods: Shipped via FedEx, UPS, or DHL courier services.

Warranty Information

• Coverage Period: 12 months from the date of purchase.
• The warranty covers material and workmanship defects under normal use and installation.
• Installation must comply with all specified electrical and environmental requirements.
• Support is available for basic parameter setup and troubleshooting.

Frequently Asked Questions (FAQ)

• What are the DC terminals used for on this drive?

The DC terminals allow you to power the drive from an external DC source, such as a battery bank, a solar array, or a common DC bus shared with other drives. This is useful for backup power systems or regenerative applications.

• Why is the Common Mode Capacitor Jumper removed?

Removing this jumper disconnects an internal capacitor in the EMC filter. This is a specific configuration for installations where connecting this capacitor to ground could create a ground loop or interfere with sensitive equipment, often done to meet strict EMC directives.

• Can I mount this open-type drive outside of a control cabinet?

The IP20 rating provides basic protection against finger contact but no protection against water or substantial dust. It is designed for mounting inside a larger enclosure (like a NEMA/UL rated cabinet) that provides the full environmental protection for the application.

• How do I program the drive without a Human Interface Module (HIM)?

You can use Rockwell Automation's free Connected Components Workbench (CCW) software on a PC. Connect to the drive's embedded communication port (like DSI) using a 1203-USB or similar programming cable to configure all parameters.

• Is the internal braking transistor sufficient for holding a load?

No, the transistor is for dynamic braking (dissipating energy during deceleration). For holding a load at zero speed (a "holding brake"), you need a separate mechanical motor brake controlled by one of the drive's relay outputs. The internal transistor requires an external resistor to function.

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