Allen-Bradley 20F11NC072JA0NNNNN | PowerFlex 753 37kW AC Drive

Looking for precise motor control? This Allen-Bradley drive delivers. The 20F11NC072JA0NNNNN model provides 37 kW (50 HP) of reliable power. It works with common 400V AC 3-phase systems. Ideal for improving efficiency in pumps, fans, and machine tools.

Complete Technical Details

Brand & Model: Allen-Bradley 20F11NC072JA0NNNNN
Product Series: PowerFlex 753 Variable Frequency Drive (VFD)
Output Power: 37 kW (Normal Duty), 30 kW (Heavy Duty)
Output Current: 72 Amperes
Input Voltage: 400 Volts, 3-Phase, 50/60 Hz
DC Bus Voltage: 540 V DC
Frame Size: Frame 4
Enclosure: Open Type (must be installed in a cabinet)
Cooling: Air Cooled (Internal Fan)
Braking: Internal Dynamic Braking Transistor (External resistor not included)
Standard Features: Embedded Digital/Analog I/O, EMI/RFI Input Filter, Common Mode Jumper Installed
Expansion Slots: 3 Slots for Safety, Feedback, or Communication Cards
User Interface: No built-in keypad (requires separate HIM or software)
Mounting: Vertical on panel
Approximate Weight: 27.22 kg (60 lbs)

Simple Setup Instructions

1. Mount this 20F11NC072JA0NNNNN drive vertically inside a clean, dry electrical cabinet.
2. Connect the 3-phase 400V AC power supply to the main input terminals.
3. Wire your 3-phase motor to the drive's output terminals (T1/U, T2/V, T3/W).
4. Use the embedded I/O terminals for basic control signals like Run/Stop.
5. Add optional cards to the slots if you need safe torque off, encoder feedback, or network communication (like Ethernet/IP).
6. Configure motor parameters using a connected computer with programming software or a removable keypad.
7. Always perform initial testing at low speed without the mechanical load connected.

Frequently Asked Questions (FAQ)

What motors is this drive rated for?
It is rated for a 37kW (about 50 HP) motor under normal duty cycles. For applications where the motor runs at full load continuously (heavy duty), use it with a 30kW (40 HP) motor.

Can I add network communication later?
Yes. The three option slots allow you to add communication cards (like Ethernet/IP or DeviceNet) at any time. You don't need to buy a different drive model.

Why is there no braking resistor included?
The internal transistor can handle typical deceleration. An external resistor is only needed for very fast stops or high-inertia loads to dissipate the extra energy as heat.

How do I program it without a keypad?
You can use Rockwell Automation's free Connected Components Workbench software on a Windows PC, connected via a USB cable. A separate handheld HIM is also available.

Is the input filter sufficient for my facility?
The built-in filter meets common industrial standards. In facilities with very sensitive equipment, consult an engineer. You may need an additional or higher-grade filter at the main power entry point.

Package & Warranty Information

You will receive one new Allen-Bradley 20F11NC072JA0NNNNN AC Drive. We offer a straightforward 12-month warranty from your purchase date. This covers any failure in materials or workmanship under normal use.

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