How do you keep a mission-critical pump or compressor running when the supply is unstable and the ambient temperature climbs? The Schneider Electric ATV930D30N4 answers with a dual-rated Altivar Process drive that accepts 380...480 V three-phase input and delivers 30 kW normal duty or 22 kW heavy duty. This rugged wall-mounting unit is built for demanding environments, combining a built-in braking chopper, integrated STO safety and native Ethernet connectivity in one package.

What makes the ATV930D30N4 suited to oil and gas duty?

This unit belongs to the Altivar Process ATV930 series, a family engineered for continuous process operation. Its dual ND/HD rating lets engineers size one drive for two load profiles. In normal duty it supplies 30 kW (40 HP) with 120% overload for 60 s; in heavy duty it delivers 22 kW (30 HP) with 150% overload for 60 s. That flexibility matters on sites where motor loads vary between conveying and crushing.

Electrical headroom is equally important. Normal duty input current reaches 53.3 A at 380 V and 45.9 A at 480 V, while heavy duty draws 40.5 A at 380 V and 35.8 A at 480 V. The supply tolerance of -15%/+10% at 50/60 Hz helps the drive ride through the voltage sags common on remote well pads and gathering stations.

Key features and technical specifications

• Supply voltage: 380...480 V three-phase, -15%/+10%, 50/60 Hz.
• Motor power: 30 kW (40 HP) normal duty; 22 kW (30 HP) heavy duty.
• Output frequency: 0.1...599 Hz for flexible process speed control.
• Integrated safety: 1 STO function rated SIL3 / Cat. PL e per IEC 61508 and ISO 13849-1.
• Braking: Built-in dynamic brake transistor; external braking resistor required, 10 Ω minimum.
• Digital inputs: 8 inputs at 24 V DC, positive or negative logic.
• Analog I/O: 3 analog inputs and 2 analog outputs configurable as 0...10 V or 0/4-20 mA.
• Relay outputs: 3 outputs (1 NO/NC + 2 NO) for status and interlock signals.
• Communications: Dual-port Ethernet switch plus Modbus serial port; EtherNet/IP and Modbus TCP built in.
• Cybersecurity: Achilles Level 2 certified.
• Protection rating: IP21 / UL Type 1.
• Dimensions: 673 x 226 x 274 mm; weight 28.000 kg.

Among these, the STO safety function stands out for mission-critical skids. It provides a certified safe torque off path without external contactors, which simplifies panel design and reduces wiring in safety circuits. The built-in dynamic brake transistor is another field-proven asset: it manages deceleration energy from high-inertia loads such as centrifugal compressors, provided the specified external resistor is fitted.

How does the drive perform in harsh environments?

Environmental resilience separates process drives from general-purpose units. This unit operates from -15 to +50 °C as standard, with derating available up to 60 °C for wall-mount IP21 installations. Storage temperature spans -40 to +70 °C, and relative humidity of 5 to 95% non-condensing is permitted per IEC 60068-2-3.

For high-altitude sites, the drive needs no derating up to 1000 m; between 1000 and 3000 m, derate nominal current by 1% per additional 100 m. The environmental class rating of IEC 60721-3-3 3C3 / 3S3 / 3M3 covers the corrosive and mechanical stresses often found in oil and gas facilities. A Category C2 EMC filter is integrated on this model, supporting compliance in industrial networks.

Installation and integration notes

Mechanical installation follows straightforward rules. Allow 100 mm clearance above and below the enclosure and 10 mm at the front for airflow. Power terminals on Frame 4 require 5 N·m tightening torque. Total power dissipation reaches 843 W in normal duty and 586 W in heavy duty at nominal load, so the required minimum air flow of 240 m3/h must be respected in enclosed cabinets.

On the network side, the dual-port Ethernet switch supports daisy-chain topologies, while the Modbus serial port handles legacy devices. EtherNet/IP and Modbus TCP are available natively. One option slot accepts fieldbus modules such as PROFINET, PROFIBUS DP V1, CANopen, DeviceNet, EtherCAT or POWERLINK. If you plan to join one of these networks, confirm gateway and cabling requirements with the supplier before commissioning.

Reliability and maintenance

Reliability in the field depends on airflow and thermal management. Inspect fans and heatsinks periodically, and verify that cabinet filters remain clear. Because the drive is rated for 50 kA prospective short-circuit current, coordination with upstream protection should follow the catalog table. The conformal environmental rating helps resist corrosive atmospheres, but routine inspection of terminal torque and enclosure seals remains essential.

For parts engineered for harsh oil and gas environments, PetroPartsOnline provides application-specific selection guidance. Contact PetroPartsOnline for parts suited to your application's requirements.

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