Allen Bradley PowerFlex 753 Variable Frequency Drive 20F1AND156AN0NNNNN

The Allen Bradley 20F1AND156AN0NNNNN is a high-power variable frequency drive from the PowerFlex 753 series. This model offers precise control for large motors in demanding industrial applications. It features embedded basic I/O and advanced sensorless vector control algorithms. The 20F1AND156AN0NNNNN is designed for cabinet mounting with efficient air cooling for optimal thermal performance.

Drive Identification & Power Ratings

• Brand: Allen Bradley (Rockwell Automation)
• Model: 20F1AND156AN0NNNNN
• Series: PowerFlex 753 AC Drive
• Input Power: Three-Phase, 480 V AC (+10%/-10%)
• Input Configuration: AC Input with Precharge, No DC Terminals
• Output Power (Normal Duty): 93 kW / 125 HP
• Output Power (Heavy Duty): 75 kW / 100 HP
• Output Current (ND): 156 Amps
• Output Current (HD): 127 Amps (approx.)
• Motor Voltage: 460 V AC
• Control Methods: Volts/Hertz (V/Hz), Sensorless Vector Control

Key Features & Internal Configuration

• Embedded I/O: Basic digital and analog inputs/outputs for standalone control.
• Dynamic Braking: Integrated Transistor Brake (requires external resistor).
• EMC Filtering: Internal EMC/RFI Filter (Common Mode Jumper Removed in this variant).
• Cooling System: Forced Air Cooling with Internal Fan(s).
• Precharge Circuit: Protects the drive during power-up inrush.
• Human Interface Module (HIM): Not included (blanking plate installed).
• Communication Ready: Supports add-on communication adapters (sold separately).
• Frame Size: Frame 6

Physical & Environmental Specifications

• Enclosure Type: Open Type (Chassis)
• Mounting Style: Cabinet or Panel Mount
• Standard Protection: IP00 (Chassis)
• Optional Kit: IP20 Cover Kit available separately for front-side protection.
• Operating Temperature: 0°C to 50°C (32°F to 122°F) without derating up to 40°C.
• Storage Temperature: -40°C to 85°C (-40°F to 185°F)
• Relative Humidity: 5% to 95% (non-condensing)
• Operating Altitude: 0-1000 meters without derating; derate 1% per 100m above.
• Vibration Resistance: 1.0 G from 2 to 200 Hz per IEC 60068-2-6.
• Unit Weight: 74.84 kg (165.00 lbs)

Electrical Performance & Capabilities

• Output Frequency Range: 0 to 590 Hz
• Overload Capacity: 150% of rated current for 60 seconds (Heavy Duty rating).
• Starting Torque: Up to 200% of motor rated torque in sensorless vector mode.
• Speed Regulation: ±0.5% of base speed (sensorless vector).
• Carrier Frequency: Adjustable, typically 2-8 kHz for Frame 6.
• Efficiency: Typically > 97.5%.
• Protections: Overcurrent, overvoltage, undervoltage, ground fault, short circuit, motor overload, overtemperature, phase loss.

Installation & Mounting Guidelines

• Mount the heavy drive on a robust, vertical mounting surface within a rated electrical cabinet.
• Ensure a minimum clearance of 150 mm (6 in) above and below the unit for airflow.
• Use appropriate lifting equipment due to the unit's substantial weight (over 74 kg).
• Connect the three-phase AC power to the L1/R, L2/S, L3/T input terminals.
• Connect the motor leads to the output terminals T1/U, T2/V, T3/W using properly sized copper cable.
• Install a correctly rated disconnect switch and branch circuit protection upstream.
• Ground the drive chassis securely using multiple points if possible, following local codes.
• For EMC compliance, use shielded motor cable and ground the shield at the drive end.

Packaging & Shipping Details

• Package Contents: 1 x Allen Bradley 20F1AND156AN0NNNNN Drive Unit (Open Chassis)
• Documentation: Quick Start guide; comprehensive manual available online.
• Shipping Weight: Approximately 80 kg (176 lbs) with protective packaging.
• Shipping Methods: Freight shipment via FedEx, UPS, or DHL for heavy cargo.
• Handling: Requires a pallet jack or multiple personnel for safe movement.

Warranty Information

• Coverage Period: 12 months from the original purchase date.
• The warranty covers defects in materials and factory workmanship under normal use.
• Proper installation within all published environmental and electrical limits is required.
• Technical support is available for configuration and integration assistance.

Frequently Asked Questions (FAQ)

• What does "No DC Terminals" mean in the input configuration?

It means this specific drive model does not have terminals to connect an external DC power source (like a battery or DC bus) directly to its DC bus. It is designed for AC input only. Other PowerFlex 753 variants may include DC terminal connections.

• Why is the Common Mode (CM) Jumper removed on this drive?

The CM jumper is part of the internal EMC filter network. Removing it alters the filter's grounding configuration, which may be necessary to meet specific electromagnetic compatibility (EMC) standards in your region or to prevent ground loop issues in complex installations.

• Can I control this drive remotely without the door-mounted HMI?

Yes, absolutely. You can control it via its embedded I/O (digital start/stop), analog reference, or more effectively, by adding a communication adapter (like EtherNet/IP) and using a PLC, SCADA system, or computer with configuration software.

• What size braking resistor do I need for the internal transistor brake?

The required resistor size (ohms and watts) depends on your motor's inertia, stopping time, and cycle rate. You must calculate the braking power using formulas in the drive manual or use Rockwell's sizing tools. An undersized resistor will overheat and trip the drive.

• Is the IP20 cover kit necessary for installation?

The IP00 open chassis is intended for mounting inside a sealed, protected control cabinet (which should have its own IP rating). The IP20 kit provides basic finger and dust protection if the drive is mounted in a less protected area, but a full cabinet is always recommended.

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