RTU master connection
A controller that supports the standard 03 and 06 RTU commands can communicate with the drives directly. A serial converter module provides the alternate DF1-to-DSI connection path.
Allen-BradleyPowerFlex 40
Allen-Bradley 22B-B012N104 / 22B-B017N104 AC Drives
Product Description
For larger 240 V motor loads, Allen-Bradley 22B-B012N104 and 22B-B017N104 are PowerFlex 40 AC drives that accept three-phase line power and produce adjustable three-phase output for induction motors. Both mount in a control panel as the motor-speed-control stage, with applications including pumps, fans, conveyors, machine tools and material-handling systems.
Commands for 22B-B012N104 and 22B-B017N104 can originate at the keypad, hardwired start/stop and programmable inputs, isolated analog references or the integral RS-485 DSI port. The drive applies sensorless-vector or V/Hz control to the rectifier/DC-bus/inverter power path, while a Form C relay, two opto outputs and one analog output report drive, motor or logic conditions to the surrounding control system.
Networked operation of 22B-B012N104 and 22B-B017N104 can use the integral RS-485 port with an RTU master or add a PowerFlex communication adapter for another supported industrial network. Node address, data rate, message format, communication-loss time and loss action define how the drive reacts to the serial path, while the selected motor load and branch circuit still determine which of the two shared-control models is installed.
Technical Specifications
| Technical Item | 22B-B012N104 | 22B-B017N104 |
|---|---|---|
| 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, 3-phase | |
| Input voltage range | 180…264 V AC | |
| Output current | 12.0 A | 17.5 A |
| Motor rating | 2.2 kW / 3 HP | 3.7 kW / 5 HP |
| Input current | 15.5 A | 21.0 A |
| Frame | B | |
| Enclosure | IP20 NEMA / Open Type | |
| Total power dissipation | 115 W | 165 W |
| Dimensions (W × H × D) | 100 × 180 × 136 mm | |
| Approximate shipping weight | 2.2 kg (4.9 lb) | |
| Motor output | 0…230 V AC, 3-phase | |
| 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 | |
RS-485 Multi-Drop Communication
The integral DSI port can place multiple PowerFlex drives on an RTU network while preserving a separate node address and command state for each unit.
Node organization
Up to 31 drives can share the RS-485 multi-drop line under the documented RTU arrangement. Each drive requires its own address and the physical line needs the specified end termination.
Shield reference
The RS-485 shield terminal is bonded to protective earth. The serial wiring remains separate from motor and input-power conductors to limit coupled electrical noise.
Dynamic Braking Circuit Path
The internal brake transistor gives regenerated motor energy a controlled route from the DC bus to an external resistor during configured deceleration.
Regenerated energy
A decelerating motor can return energy to the DC bus. When bus conditions call for braking, the internal transistor switches that energy into the resistor circuit.
External resistor
The resistor connects at the braking terminals and must satisfy the minimum resistance and duty requirement for the drive rating. It is not an internal load supplied with the drive.
Bus protection
The braking path works beside the DC-bus overvoltage protection rather than replacing it. Incorrect resistance or excessive duty can still produce a bus or braking fault.
Frequently Asked Questions
What makes 22B-B012N104 / 22B-B017N104 different if both use Frame B?
22B-B012N104 is the 12.0 A, 2.2 kW unit and 22B-B017N104 is the 17.5 A, 3.7 kW unit. The common frame preserves the outline, not the branch, motor or thermal rating.
How many drives can share the RTU line with 22B-B012N104 / 22B-B017N104?
The documented RS-485 arrangement supports as many as 31 PowerFlex 4 or PowerFlex 40 drives on one RTU multi-drop network. Unique node addressing and correct termination are required.
Where does an external brake resistor connect for 22B-B012N104 / 22B-B017N104?
It connects to the drive's braking/DC-bus terminal path used by the internal brake transistor. The resistor value and duty must match the exact drive rating.
Can 22B-B012N104 / 22B-B017N104 receive commands from the keypad and terminals at the same time?
The Start Source and Speed Reference parameters decide which command paths are active. Wiring an input does not override a parameter that assigns control to another source.
What cooling condition applies to 22B-B012N104 / 22B-B017N104?
All ratings use fan cooling and the IP20 open-type ambient limit is -10…50 °C. The cabinet must allow the cooling path to operate within that surrounding-air range.
Which diagnostic values are available on 22B-B012N104 / 22B-B017N104?
The display group exposes output frequency, current, voltage, DC-bus voltage, drive status, control source, input state and recent fault codes. These read-only values can be checked before changing a parameter.
Moore Automation
Customer Support
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