25A-D017N104 Allen-Bradley | AC Drive

Product Overview

The 25A-D017N104 is a high-performance Variable Frequency Drive (VFD) within the Allen-Bradley PowerFlex 523 family, engineered for 480V three-phase industrial power systems. Delivering a continuous 17 Amperes of output, this unit is rated for 7.5 kW or 10.0 HP, making it a staple for mid-sized motor control tasks. Its versatile design supports a variety of control methods, from standard Volts per Hertz to sophisticated Closed Loop Velocity Vector control, ensuring optimal performance across a wide range of torque and speed requirements.

Core Technical Advantages

This hardware is distinguished by its precision and reliability, maintaining a displacement power factor of 0.98 throughout the entire speed range. The 25A-D017N104 is built for resilience, featuring a voltage tolerance of -15% to +10%, which safeguards operations against common grid fluctuations. Unlike filtered models, this "N104" variant offers no internal EMC filtering, providing a cost-effective choice for environments where external filtering is already present or not required. Additionally, the inclusion of Safe-Torque Off (STO) functionality enhances machine safety by allowing the drive to be safely disabled without removing main power.

Technical Specifications

Installation & Maintenance

Designed for flexible mechanical integration, the 25A-D017N104 can be mounted either on a standard DIN rail or directly to a panel backplate. Given its 3.9 kg weight and 17A current output, installers should ensure the mounting surface and DIN rail are rated for the mechanical load and that proper electrical grounding is established. For maintenance, the modular design allows the control core to be swapped out while the power base remains wired, significantly reducing time-to-repair. The IP20 NEMA Open Type rating necessitates that the unit be installed in a clean, dry, and ventilated enclosure to prevent dust accumulation.

Engineering Advantages

The drive features an expansive I/O suite, including 5 discrete inputs and dual analog inputs (0-10VDC and 0-20mA), allowing it to integrate seamlessly with various sensors and PLC systems. The integrated RS485 communication port provides a direct path for Modbus networking, while the optional communication cards allow for EtherNet/IP expansion. Furthermore, the 25A-D017N104 provides a high short-circuit rating of up to 100kA symmetrical, offering superior protection for both the drive and the connected motor when paired with appropriately rated fuses or circuit breakers.

Technical FAQs

Q1: Can this drive be powered by a single-phase source?
A1: Yes, the 25A-D017N104 can accept single-phase input, but it must be derated to 35% of its three-phase output current capacity to avoid overheating.

Q2: What is the benefit of Safe-Torque Off (STO)?
A2: STO allows the drive to be safely put into a "torque-off" state for maintenance or emergency stops, meeting high safety standards (SIL2/PLd) without needing external contactors.

Q3: Does this model include an internal brake resistor?
A3: This drive includes an internal dynamic brake transistor; however, an external dynamic brake resistor is required if your application involves frequent or high-inertia decelerations.