Overview
The Allen-Bradley 25B-D4P0N104 is a compact Frame A variable frequency drive from the Powerflex 525 series, engineered for efficient three-phase AC motor control. Rated at 2 HP (1.5 kW) in both normal and heavy-duty modes, this drive accepts 380–480 VAC input and delivers up to 4 A output current. With embedded EtherNet/IP connectivity, integrated safety features, and flexible control algorithms, the 25B-D4P0N104 provides a robust, space-saving solution for energy-efficient motor control across conveyors, fans, pumps, mixers, and similar industrial machinery.
Key Features
- Embedded EtherNet/IP & Safety: Native network communication with built-in Safe Torque Off (STO) function meeting ISO 13849-1 standards (SIL 2/PLd rating).
- Modular Design: Detachable control and power modules allow parallel configuration and installation, reducing commissioning time.
- Multiple Control Modes: Supports V/Hz, sensorless vector, and closed-loop velocity control for diverse motion and speed applications.
- Compact Frame A Footprint: 6.77 × 2.83 × 5.98 inches; no external filter required (IP20 NEMA open-type enclosure).
- USB Programming: Plug-and-play connectivity for configuration and parameter upload without mains power (MainsFree configuration).
- Optional Encoder Support: Closed-loop feedback card enables speed or position control for enhanced regulation accuracy.
Technical Specifications
- Input Voltage: 3-phase 380–480 VAC, 50/60 Hz
- Output Current: 4.0 A nominal
- Power Rating (ND/HD): 2 HP (1.5 kW) normal and heavy duty
- Output Voltage: 0–460 VAC (variable frequency)
- Control Modes: V/Hz, sensorless vector, closed-loop velocity
- Frame Size: Frame A
- Enclosure Rating: IP20 NEMA / Open type
- Communications: Embedded EtherNet/IP, USB; supports optional DeviceNet, PROFIBUS DP, RS485/DSI
- Safety Features: Safe Torque Off (STO); ISO 13849-1 compliance (SIL 2/PLd)
- Accessory Card Slots: Two (supports encoder feedback, communication cards)
- Operating Temperature: Up to 70 °C (158 °F)
- Power Loss: Approximately 62 watts
- Dimensions: 6.77 × 2.83 × 5.98 inches
- Filter: None (no external filter required)
- Bulletin Number: 25B-D4P0N104
Typical Applications
The 25B-D4P0N104 excels in applications requiring smooth variable-speed control and energy savings. Ideal installations include belt conveyors, centrifugal pumps, industrial fans and blowers, batch mixers, and light-to-medium horsepower motor loads where efficiency and reduced inrush current are priorities. The embedded safety functionality makes it suitable for applications subject to safety-related shutdown requirements.
Compatibility & Replacements
The Allen-Bradley 25B-D4P0N104 integrates directly with Studio 5000 Logix Designer (formerly RSLogix 5000) for seamless programming and Automatic Device Configuration (ADC) support. Configuration files can be transferred directly to the drive, and replaced units automatically upload stored parameters, minimizing downtime. The drive is compatible with Rockwell CompactLogix, ControlLogix, and PLC systems supporting EtherNet/IP. Standard fixed terminal block connections accommodate most industrial control wiring. As a newer Powerflex 525 model with embedded safety, it offers a compact upgrade path from older Powerflex 4 or 40 drives while maintaining better efficiency and communication capabilities. Always verify firmware versions and module compatibility before substitution in existing installations.
