The Allen-Bradley 25A-D4P0N104 is a AC adjustable-frequency drive — PowerFlex 523 for industrial control and automation applications.

Allen-Bradley 25A-D4P0N104 is a PowerFlex 523 AC adjustable-frequency drive rated 1.5 kW (2 HP) for 380…480V AC three-phase input at 4 A continuous output. It belongs to the PowerFlex 520-series platform and ships in a Frame A, IP20 NEMA/Open Type enclosure with no integral EMC filter.

This buyer's guide walks through the electrical, environmental and communication specifications that matter when selecting a drive for pumps, fans, conveyors and other mission-critical loads in oil and gas facilities.

What electrical ratings should you verify before specifying this drive?

The 25A-D4P0N104 is built around a 380…480V AC three-phase supply. Its input voltage tolerance is -15 % / +10 %, and input frequency tolerance spans 47…63 Hz, so it tolerates the voltage sag and frequency drift common on remote wellsite distribution.

• Supply voltage: 380…480V AC, 3-phase
• Input voltage tolerance: -15 % / +10 %
• Input frequency: 47…63 Hz
• Continuous output current: 4 A maximum at rated output voltage
• Output frequency: 0…500 Hz (programmable)
• Efficiency: 97.5 % (typical)
• Power dissipation: 62 W total at rated load and rated speed
• Displacement power factor: 0.98 across the entire speed range

Heavy-duty overload is 150 % of rated output current for up to 60 s and 180 % for up to 3 s. The drive also provides 100 ms power ride-through and 0.5 s minimum logic control ride-through, which helps it ride through brief supply interruptions without dropping the process.

How does operating temperature affect mounting and derating?

Ambient operating temperature is the parameter most likely to constrain an installation. For vertical mounting in the IP20/Open Type enclosure, the drive runs from -20…+50 °C without derating, up to +60 °C derated, and up to +70 °C with the 25-FANx-70C control module fan kit.

Zero-stack vertical mounting reduces the no-derating ceiling to 45 °C, with 55 °C derated and 65 °C with the fan kit. Horizontal mounting with the fan kit supports 50 °C without derating and 70 °C with the kit. Storage temperature is -40…+85 °C, and relative humidity is 0…95 % non-condensing.

Altitude is limited to 1000 m (3300 ft) without derating, with operation up to 4000 m (13 200 ft) permitted under derating. The drive complies with IEC 60721-3-3 level 3C2 for chemical and gases only, so the ambient atmosphere must not contain volatile or corrosive gases, vapors or dust.

What control and communication interfaces are available?

The standard interface module includes an integral keypad, potentiometer and LED display. Control I/O includes one dedicated Stop input plus four programmable digital inputs, one pulse train input shared with a programmable digital input, one isolated analog input (0…10V DC or 4…20 mA), one programmable Form C relay output and one non-isolated analog output.

Control methods are Volts/Hertz, sensorless vector control and Economizer SVC. Speed regulation without an encoder is ±1 % of base speed across a 60:1 range in V/Hz, and ±0.5 % across a 100:1 range in SVC and SVC Economizer.

The built-in port is one RS-485 DSI on the RJ45 terminal C1. Modbus RTU is supported over that port with function codes 03, 06 and 16, and multi-drop networks support data rates from 1200…38400 bit/s and node addresses 1…247. Only pins 4 and 5 of the RJ45 connector are used for the network.

There is no embedded EtherNet/IP port on the PowerFlex 523. EtherNet/IP requires the 25-COMM-E2P option card. Communication-loss handling is configurable through C125 [Comm Loss Action] and C126 [Comm Loss Time] from 0.1…60.0 s.

Which enclosure and environmental protections does it provide?

The catalog number ends in N104, which denotes an IP20 NEMA/Open Type enclosure, standard interface module, no EMC filter and standard brake IGBT. An IP30 / NEMA 1 / UL Type 1 rating requires the 25-JBAx option kit.

Frame A measures 152.0 H × 72.0 W × 172.0 D mm and weighs 1.1 kg. It accepts DIN-rail or screw mounting. Shock rating is 15 g operating and 30 g non-operating; vibration is 2 g operating and 2.5 g non-operating. Sound pressure level is 53 dBA measured 1 m from the drive.

Because no integral EMC filter is fitted, external filters are needed for EN 61800-3 Category C1/C2/C3 compliance. The drive is not intended for public low-voltage networks supplying domestic premises without additional mitigation.

How should you plan maintenance and integration?

Inspect the fan and heatsink periodically, and confirm that ambient temperature stays within the published derating envelope. The drive produces leakage current exceeding 3.5 mA AC and/or 10 mA DC, so the earthing conductor must comply with local regulations for high protective-earthing-current equipment.

For Modbus networks, fit 120 Ω terminating resistors at each end of the cable, separate network wiring from power wires by at least 0.3 m (1 ft) and cross only at right angles. RS-485 repeaters may be needed for long runs or more than 32 nodes.

Dynamic braking requires an external brake resistor. The drive is c-UL-us Listed to UL 508C and CSA C22.2 No. 274, and carries CE, UKCA, RCM and KC markings. It has no embedded Safe Torque Off function.

Contact PetroPartsOnline for parts suited to your application's requirements.

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