The Allen-Bradley 20G1AND477JA0NNNNN is a PowerFlex 755 air-cooled AC drive designed for high-performance motor control in heavy industrial applications. Operating at 480 VAC, 3-phase, it delivers 400 HP (300 kW) normal duty with a rated output current of 477 A in a Frame 7 design. The PowerFlex 755 is Rockwell Automation’s flagship drive platform, supporting applications from pumps and fans to complex motion control with Integrated Motion on EtherNet/IP.
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20G1AND477JA0NNNNNOrder(MOQ) :
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5kg| Specification | Description |
|---|---|
| Manufacturer | Rockwell Automation (Allen-Bradley) |
| Model | 20G1AND477JA0NNNNN |
| Product Family | PowerFlex 755 |
| Product Type | Air-Cooled AC Drive (VFD) |
| Input Voltage | 480 VAC / 650 VDC, 3-Phase |
| Normal Duty Power | 400 HP / 300 kW |
| Heavy Duty Power | 300 HP |
| Output Current (Normal Duty) | 477 A |
| Frame Size | Frame 7 |
| Enclosure Rating | IP00 / IP20 / NEMA Open Type |
| Input Type | AC Input with Precharge, no DC Terminals |
| Communication | Embedded EtherNet/IP |
| Dynamic Braking | Internal Transistor (DB Transistor) |
| Filtering | EMC Filtered |
| Common Mode Jumper | Installed (preferred configuration) |
| Human Interface Module (HIM) | Blank (No HIM Included) |
| Operating Temperature | 0°C to +50°C |
| Storage Temperature | -40°C to +70°C |
| Weight | Approx. 68 kg (150 lbs) |
| Lifecycle Status | Active Mature |
| Model | Description | Typical Application |
|---|---|---|
| 20G1AND477JA0NNNNN (this model) | PowerFlex 755, 477A, 400HP ND, 480V AC, Frame 7, No HIM | High-performance motor control with EtherNet/IP |
| 20G1ANC367JA0NNNNN | PowerFlex 755, 367A, 250HP ND, 400V AC, Frame 7 | Medium-high power applications |
| 20G1ANC260JA0NNNNN | PowerFlex 755, 260A, 200HP ND, 400V AC, Frame 6 | Mid-range motor control |
| 20G1ANC170JN0NNNNN | PowerFlex 755, 170A, 125HP ND, 480V AC, Frame 6 | Standard drive applications |
| 20-750-ENC-1 | Incremental Encoder Option Module | Closed-loop speed/position feedback |
| 20-750-UFB-1 | Universal Feedback Option Module | Multi-encoder feedback support |
| 20-HIM-A6 | Enhanced HIM, NEMA 1 | Local programming and monitoring interface |
| 20-750-ENETR | Dual-Port EtherNet/IP Option Module | DLR ring topology support |
Q1: What is the primary function of the 20G1AND477JA0NNNNN?
It is a PowerFlex 755 adjustable frequency AC drive used to control the speed and torque of three-phase AC motors. It is designed for high-performance applications requiring precise motor control, embedded EtherNet/IP connectivity, and flexible option card expansion .
Q2: Does this drive include a Human Interface Module (HIM)?
No. The model number includes “Blank (No HIM)”, meaning it ships with a blank cover instead of an operator interface . For local programming and monitoring, a compatible HIM (such as 20-HIM-A6 for drive-mounted or 20-HIM-C6S for door-mounted) must be ordered separately.
Q3: What communication protocols does this drive support?
The drive features embedded EtherNet/IP as standard, enabling seamless integration with Allen-Bradley PLCs and Studio 5000 Add-On Profiles . Additional communication protocols (DeviceNet, ControlNet, PROFIBUS, etc.) are available via optional 20-750 series communication modules. A Dual-Port EtherNet/IP Option Module supports ring, linear, and star topologies, as well as Device Level Ring (DLR) for fault-tolerant connectivity.
Q4: What is the difference between Normal Duty and Heavy Duty ratings?
Normal Duty (ND) is for applications with relatively constant loads (e.g., pumps, fans), rated at 400 HP / 300 kW. Heavy Duty (HD) is for applications with high starting torque or frequent starts/stops (e.g., conveyors, mixers), rated at 300 HP . Choose the rating based on your motor’s most demanding operating conditions.
Q5: Is the 20G1AND477JA0NNNNN still available?
Yes. The drive is listed as Active Mature by Rockwell Automation, meaning it remains in production and fully supported . Note that newer PowerFlex 755T models with TotalFORCE technology are also available for advanced applications requiring predictive maintenance and harmonic mitigation.
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