Allen-Bradley 20F11NC085JA0NNNNN | PowerFlex 753 45kW AC Drive

Looking for powerful and flexible motor control? This Allen-Bradley drive delivers. The 20F11NC085JA0NNNNN provides 45 kW (60 HP) of reliable power. It works with common 400V AC 3-phase systems. Perfect for industrial pumps, large fans, and processing equipment.

Why Choose This PowerFlex 753 Drive?

• High Power Output: Controls motors up to 60 horsepower (45kW) efficiently.
• Ready for Expansion: Three open slots for adding safety, feedback, or network cards.
• Integrated Features: Comes with embedded I/O, dynamic braking, and an EMC filter.
• Robust Cooling: Air-cooled design ensures reliable operation under full load.
• Industrial Design: Open-type Frame 5 enclosure built for cabinet installation.

Complete Technical Specifications

Brand & Model: Allen-Bradley 20F11NC085JA0NNNNN
Product Series: PowerFlex 753 Variable Frequency Drive (VFD)
Input Voltage: 400 Volts AC, 3-Phase, 50/60 Hz
DC Bus Voltage: 540 V DC
Output Current: 85 Amperes
Output Power: 45 kW (Normal Duty), 37 kW (Heavy Duty)
Frame Size: Frame 5
Enclosure: Open Type (IP20/IP00, requires a protective cabinet)
Cooling: Air Cooled (Internal Fan)
Braking: Internal Dynamic Braking Transistor
Standard Features: Embedded Digital/Analog I/O, EMC Filter (CM Jumper Installed)
Expansion Slots: 3 Slots for optional modules (e.g., Safe Torque Off, Encoder, Ethernet/IP)
Operator Interface: Plastic cover installed (No built-in keypad; requires separate HIM or software)
Approximate Weight: 31.75 kg (70 lbs)

Installation & Setup Guide

1. Mount the 20F11NC085JA0NNNNN drive vertically in a well-ventilated electrical cabinet.
2. Connect the 3-phase 400V AC power supply to the input terminals.
3. Wire your 3-phase motor to the drive's output terminals (U, V, W).
4. For basic control, use the embedded I/O terminals for commands like start, stop, and speed reference.
5. Install optional cards into the three slots if your application needs added safety, precise encoder feedback, or network communication (like Ethernet/IP).
6. Configure the drive using a laptop with Rockwell software (Studio 5000 or CCW) or a removable keypad. Set motor parameters and control mode.
7. Complete a start-up test at low speed without the load connected to verify proper operation.

Expert Answers to Common Questions

What is the difference between the 45kW and 37kW power ratings?
Use the 45kW (60 HP) rating for applications with varying loads (Normal Duty). Use the 37kW (50 HP) rating if the motor will run at full load continuously (Heavy Duty), as this generates more heat.

Can I add an Ethernet card for communication?
Yes. One of the three option slots is designed for communication modules. You can add an Ethernet/IP card to easily integrate the drive into your factory network for monitoring and control.

Is the built-in braking sufficient for a high-inertia load?
The internal transistor handles normal deceleration. For loads with very high inertia (like a large fan or centrifugal machine) that need to stop quickly, you will likely need to add an external braking resistor.

How do I program it without the keypad?
You can use Rockwell's free Connected Components Workbench (CCW) software on a Windows PC, connected via the drive's USB port. This method is often easier for complex parameter sets.

What does "CM Jumper Installed" mean for the filter?
It means the Common Mode EMC filter is active. This helps reduce electrical noise from the drive that could interfere with other sensitive equipment in your facility. Leave it installed for most applications.

Package Contents & Warranty

You will receive one new Allen-Bradley 20F11NC085JA0NNNNN AC Drive. We provide a straightforward 12-month warranty against defects in materials and workmanship from the date of purchase.

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