What the Schneider Electric ATV930U75N4 Delivers in Oil and Gas Duty

The ATV930U75N4 is a three-phase variable speed drive from Schneider Electric's Altivar Process ATV930 series. It accepts a 380...480 V supply and provides 7.5 kW in normal duty or 5.5 kW in heavy duty, making it a rugged choice for mission-critical pump, fan and compressor loads.

Engineers specifying this drive get a dual-rated platform with a built-in dynamic brake transistor, integrated Safe Torque Off and native Ethernet. This unit is built for demanding environments where uptime matters more than feature lists.

Key Specifications of This unit Drive

• Supply voltage: 380...480 V three-phase, -15%/+10%, 50/60 Hz.
• Normal duty power: 7.5 kW (10 HP) with 120% overload for 60 s.
• Heavy duty power: 5.5 kW (7.5 HP) with 150% overload for 60 s.
• Operating temperature: -15 to +50 °C standard, with derating up to 60 °C.
• Output frequency: 0.1...599 Hz for flexible process control.
• Integrated safety: 1 STO function, SIL3 / Cat. PL e per IEC 61508 and ISO 13849-1.
• Protection rating: IP21 / UL Type 1 for wall-mount installation.
• Dimensions (H×W×D): 409 x 171 x 236 mm; weight 7.700 kg.

The built-in dynamic brake transistor is a standout feature for high-inertia loads. It allows controlled stopping without an external chopper, though a minimum 19 Ω external braking resistor is required.

How This unit Compares with Other Drive Options

• Versus single-rated drives: This unit offers dual ND/HD ratings, so one model covers two load profiles.
• Versus drives without integrated safety: STO SIL3 is built in, reducing panel space and wiring.
• Versus basic VFDs: Native EtherNet/IP and Modbus TCP ports support plant-level connectivity.
• Versus drives without braking: The internal brake transistor simplifies high-inertia applications.

For oil and gas skids, this combination reduces part count and simplifies spare-parts strategy. Reliability you can depend on starts with fewer failure points.

Applications and Use Cases

Oil and gas operators deploy This unit on mission-critical equipment where process uptime is non-negotiable. Typical uses include progressive cavity pumps, pipeline boosters and cooling fans. Because the drive is dual-rated, it can handle both continuous and high-overload duties. In remote well pads, the wide operating temperature range supports reliable operation from -15 to +50 °C. The integrated STO function also simplifies safety circuits on pump skids, allowing faster maintenance without full power-down.

Installation and Commissioning Notes

Mount This unit vertically with 100 mm clearance above and below and 10 mm in front. These clearances support the required 103 m3/h airflow. Terminal tightening torque is 2.5 N·m for frame 1-3 power terminals. For altitude above 1000 m, derate the nominal current by 1% per additional 100 m. The drive includes a Category C2 EMC filter, which helps meet EN/IEC 61800-3 requirements in industrial settings.

Integration with Control Systems

This unit includes one Ethernet dual-port switch and one Modbus serial port. EtherNet/IP and Modbus TCP are built in, while an option slot accepts fieldbus modules such as PROFINET, PROFIBUS DP V1, CANopen, DeviceNet, EtherCAT and POWERLINK. For I/O, the drive provides 8 digital inputs, 3 analog inputs, 2 analog outputs and 3 relay outputs. Up to 3 additional I/O modules can be added.

Integration Note: Wiring into fieldbus networks may require an external gateway or connection module. Confirm cables and gateways with PetroPartsOnline for your specific application.

Reliability and Maintenance in Harsh Environments

This unit is rated for IEC 60721-3-3 class 3C3 / 3S3 / 3M3 environments. This covers corrosive gases, sand and vibration common in oil and gas sites. The drive dissipates 259 W in normal duty, so cabinet thermal design must handle that load. Periodic inspection of cooling fans and heatsinks is recommended. The built-in braking transistor should be checked if braking resistors are used. Following the installation manual NHA80932 extends service life.

Frequently Asked Questions

What is the input voltage range of This unit?

This unit accepts 380...480 V three-phase at 50/60 Hz, with a tolerance of -15%/+10%.

Can This unit operate at high ambient temperatures?

Standard operating temperature is -15 to +50 °C. Derating allows operation up to 60 °C for wall-mount IP21 units up to 160 kW.

Does This unit include a braking resistor?

No, it includes a built-in dynamic brake transistor but requires an external braking resistor with a minimum of 19 Ω.

What safety rating does the STO function have?

The integrated Safe Torque Off function is rated SIL3 per IEC 61508 and Cat. PL e per ISO 13849-1.

How much space is needed around This unit?

Allow 100 mm above and below and 10 mm in front for proper airflow, per installation manual NHA80932.

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

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