Schneider Electric ATV930D75N4Z is a three-phase variable speed drive from the Altivar Process ATV930 series, rated 75 kW in normal duty and 55 kW in heavy duty. It operates from a 380...480 V supply and includes a built-in braking unit, making it a rugged choice for mission-critical oil and gas applications.

Why the ATV930D75N4Z suits demanding oil and gas duty

Field engineers often face a pump or compressor that must handle both continuous flow and sudden heavy loads without tripping. This unit solves this with a dual ND/HD rating: 75 kW (100 HP) with 120% overload for 60 s in normal duty, and 55 kW (75 HP) with 150% overload for 60 s in heavy duty. This flexibility means one drive can cover varying process demands, reducing spare-parts inventory and simplifying panel design.

Built for demanding environments, the drive carries an IEC 60721-3-3 class 3C3 / 3S3 / 3M3 environmental rating (except frame size 7). Its operating temperature range is 0 to +40 °C standard, with derating from 40 to 50 °C for cabinet integration. The integrated Category C3 EMC filter helps limit high-frequency interference in crowded control cabinets.

Key technical parameters

• Supply voltage: 380...480 V three-phase (-15%/+10%), 50/60 Hz
• Motor power (ND): 75 kW (100 HP), overload up to 120% for 60 s
• Motor power (HD): 55 kW (75 HP), overload up to 150% for 60 s
• Output frequency: 0.1...599 Hz
• Operating temperature: 0 to +40 °C standard, derating 40 to 50 °C
• Protection rating: IP20 (bottom power terminals IP00)
• Dimensions (H×W×D): 748 x 265 x 307 mm
• Integrated safety: 1 STO function, SIL3 / Cat. PL e per IEC 61508 and ISO 13849-1
• Built-in ports: 1 Ethernet dual-port switch (RJ45); 1 Modbus serial port (RJ45)
• Cybersecurity: Achilles Level 2 certified

How does the drive handle motor control and braking?

This unit supports asynchronous motors in open-loop sensorless flux vector and closed-loop with encoder, plus synchronous PM and synchronous reluctance motors in open-loop and closed-loop vector control. A built-in dynamic brake transistor (chopper) manages regenerative energy, but an external braking resistor is required; the minimum resistance is 2.5 Ω per installation manual NHA80932.

For installation, maintain 100 mm clearance above and below and 10 mm in front (Frame 1-5). Power terminals on Frame 5 require 25 N·m tightening torque. The drive needs a minimum air flow of 295 m3/h, and total power dissipation is 1785 W in normal duty or 1143 W in heavy duty at nominal load.

Integration and communication

Built-in EtherNet/IP and Modbus TCP protocols allow direct connection to plant networks. A Modbus serial port supports RTU. For other fieldbuses, one option slot accepts modules for PROFINET, PROFIBUS DP V1, CANopen, DeviceNet, EtherCAT, or POWERLINK. Up to three additional I/O modules can be added for analog in, digital in, or relay out.

Integration note: wiring into these networks may require an external gateway or connection module. Confirm cables and gateways with PetroPartsOnline for your specific architecture.

Applications and selection guidance

This drive is well suited to oil and gas processes such as pump jacks, pipeline compressors, and mud pumps where variable speed control improves efficiency and reduces mechanical stress. The dual rating lets you select normal duty for continuous fans or heavy duty for high-torque starts. The STO safety function supports safe torque off without contactor wear, and the coated boards (class 3C3) resist corrosive atmospheres.

For application-specific selection guidance, contact PetroPartsOnline for parts suited to your application's requirements.

Reliability and maintenance

Regular inspection of cooling fans and heatsinks is recommended, especially in dusty environments. Check terminal torque periodically and verify that cabinet temperature stays within the derating curve. The drive's built-in diagnostics and Achilles Level 2 cybersecurity certification help protect against network threats. Reliability you can depend on starts with proper installation and environmental control.

Frequently asked questions

What is the supply voltage for This unit?

The Schneider Electric unit accepts a 380...480 V three-phase supply (-15%/+10%) at 50/60 Hz.

Does This unit include a braking resistor?

No, This unit has a built-in dynamic brake transistor but requires an external braking resistor; the minimum resistance is 2.5 Ω.

What safety rating does This unit carry?

This unit integrates one STO function rated SIL3 / Cat. PL e per IEC 61508 and ISO 13849-1.

Can This unit operate above 40 °C?

Yes, This unit operates from 0 to +40 °C standard, with derating allowed from 40 to 50 °C for cabinet integration.

Which communication protocols are built into This unit?

This unit includes built-in EtherNet/IP and Modbus TCP on a dual-port Ethernet switch, plus a Modbus serial port.

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