Incoming branch
Single-phase line conductors enter the drive through the branch protection and input-power path. The branch device and conductor rating follow the drive input current rather than the motor output current.
Allen-BradleyPowerFlex 40
Allen-Bradley 22B-A2P3N104 PowerFlex 40 AC Drive
Product Description
Allen-Bradley 22B-A2P3N104 is a PowerFlex 40 variable-frequency AC drive for operating a three-phase induction motor from a 200…240 V single-phase supply. It is mounted in a control panel between branch-circuit protection and the motor, where it starts, stops, reverses and regulates motor speed for equipment such as machine tools, fans, pumps, conveyors and material-handling systems.
Inside 22B-A2P3N104, the single-phase input is rectified to a DC bus and an IGBT inverter produces adjustable 0…230 V three-phase output. A fixed keypad and speed potentiometer provide local commands; three fixed and four programmable digital inputs, separate voltage and current analog inputs, a relay, two opto outputs and a selectable analog output connect external controls and status devices, while the integral RS-485 DSI port supports programming or an RTU multi-drop link.
Programming 22B-A2P3N104 begins by assigning the start source, speed reference, motor nameplate data and acceleration or stop behavior. The drive then uses those settings with sensorless-vector or V/Hz control to regulate the motor, stores recent fault codes for diagnosis, and applies electronic motor-overload, current-limit and DC-bus protection while it is running; the N104 suffix keeps the installation within the standard open, no-filter, brake-equipped construction.
Technical Specifications
| Technical Item | 22B-A2P3N104 |
|---|---|
| Brand | Allen-Bradley |
| Product type | Variable-frequency AC drive |
| Brand country | United States |
| Lifecycle | Discontinued June 30, 2025 |
| Product family | PowerFlex 40 AC drive |
| Input | 200…240 V AC, 1-phase |
| Input voltage range | 180…264 V AC |
| Output | 0…230 V AC, 3-phase |
| Output current | 2.3 A |
| Motor rating | 0.4 kW / 0.5 HP |
| Frame | B |
| Enclosure | IP20 NEMA / Open Type |
| EMC filter | No filter |
| Dimensions (W × H × D) | 100 × 180 × 136 mm |
| Approximate shipping weight | 2.2 kg (4.9 lb) |
| Control methods | Sensorless Vector Control and V/Hz |
| Intermittent overload | 150% for 60 s; 200% for 3 s |
| Carrier frequency | 2…16 kHz adjustable |
| Digital inputs | 3 fixed and 4 programmable |
| Analog inputs | 0…10 V and 4…20 mA; independently isolated |
| Outputs | 1 Form C relay; 2 opto; 1 selectable analog output |
| Communication | Integral RS-485 DSI; RTU multi-drop support |
| Operating temperature | -10…+50 °C, IP20 open type |
| Relative humidity | 0…95% noncondensing |
Single-Phase Input to Motor Output
The input and output sides serve different electrical systems, so the supply conductors, DC-bus section and motor leads must remain distinct through the installation.
DC conversion stage
The rectifier converts the incoming AC into the internal DC bus. The brake transistor connects the DC bus to an external braking resistor when the configured deceleration produces regenerative energy.
Three-phase motor path
The IGBT output stage generates variable-frequency three-phase power at U, V and W. Motor direction and speed follow the active run command and frequency reference.
Integral Keypad Start-Up
The fixed keypad gives the drive a local command and programming surface before any PC or network tool is connected.
Status display
The four-digit display and ten LED indicators identify operating state, units and fault condition. Display-group parameters expose output frequency, current, voltage, DC-bus voltage and control status.
Local speed reference
The front potentiometer can act as the selected speed source. Start, stop and direction keys provide local operation when the corresponding parameters assign the keypad as the command source.
Basic Program Group
The most frequently used motor, frequency, source and acceleration settings are grouped for initial setup. The remaining parameters extend I/O, protection and communication behavior.
Frequently Asked Questions
Why does 22B-A2P3N104 use a single-phase supply but a three-phase motor connection?
The input rectifier accepts the single-phase 200…240 V branch and feeds the internal DC bus. The inverter then synthesizes adjustable three-phase output for the motor.
What has to remain in series with the input of 22B-A2P3N104?
The branch requires the selected fuse or motor-protection device ahead of the drive. That protective device is sized from the drive input data and available fault current, not from the output phase count alone.
Can 22B-A2P3N104 take its speed command from an analog source?
Yes. The control section accepts either a 0…10 V signal or a 4…20 mA signal as the active analog speed reference. Only one analog frequency source is used at a time on PowerFlex 40.
How does the front interface start 22B-A2P3N104 without an external controller?
The keypad can be selected as the start source and the front potentiometer as the speed reference. The display then shows drive status and the chosen operating value.
What enclosure fact follows the N104 suffix on 22B-A2P3N104?
The catalog number is an IP20, NEMA/UL open-type unit without an integral EMC filter. Environmental protection must therefore come from the completed panel arrangement.
Which communication path is built into 22B-A2P3N104?
An integral RS-485 DSI port supports programming and multi-drop communication. Other industrial networks use the relevant communication option rather than an assumed embedded interface.
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