ATV930U55N4 Schneider Altivar Process ATV900 Drive 5.5 kW

ATV930U55N4 | Altivar Process ATV900 Variable Speed Drive

The Schneider Electric ATV930U55N4 is an industrial variable speed drive from the Altivar Process ATV900 series. It controls compatible asynchronous and permanent-magnet synchronous motors in demanding process applications.

This wall-mounted drive supports 5.5 kW normal-duty operation and 4 kW heavy-duty operation on three-phase 380–480 V supplies. Its integrated braking chopper, configurable motor control, embedded Ethernet communication, and Safe Torque Off function support flexible machine and process integration.

• Manufacturer: Schneider Electric
• Model: ATV930U55N4
• Product Family: Altivar Process ATV900
• Device Type: Variable Speed Drive (VSD / VFD)
• Rated Motor Power: 5.5 kW normal duty / 4 kW heavy duty
• Supply: Three-phase, 380–480 V
• Protection Rating: IP21
• Braking: Integrated braking chopper
• Safety Function: Safe Torque Off (STO), SIL 3 as specified

01 | Drive Sizing at a Glance

Selection rule: Match the drive to the motor's rated current, torque profile, overload requirement, and operating cycle. Do not select the drive by kilowatts alone.

Normal-duty and heavy-duty ratings describe different operating conditions. Verify the required overload capability and applicable derating rules before finalizing the motor-drive combination.

02 | Electrical and Mechanical Specifications

03 | Motor Control and Braking Performance

The ATV930U55N4 provides configurable acceleration, deceleration, motor control, and braking functions. Engineers can adapt these settings to the load characteristics and required stopping behavior.

• Ramp Adjustment: Set independent linear acceleration and deceleration ramps from 0.01 to 9999 seconds.
• Motor Slip Compensation: Adjust compensation according to the selected motor control mode.
• Standstill Braking: Supports DC injection braking where appropriate.
• Braking Chopper: Supports a compatible braking resistor arrangement when the application requires dynamic braking.
• Preset Speeds: Configure 16 preset speeds through supported discrete-input logic.
• Motor Types: Supports compatible asynchronous motors and permanent-magnet synchronous motors.

Braking note: An integrated braking chopper does not necessarily mean a braking resistor comes with the drive. Confirm resistor requirements, resistance, power rating, and duty cycle against the manufacturer's instructions.

04 | Embedded Communication and Network Integration

Optional communication cards require the correct card type and installation position. Verify firmware support, network topology, connector requirements, and controller compatibility before ordering an option card.

05 | Control I/O and Signal Processing

These I/O functions support speed references, process feedback, run commands, status monitoring, and external interlocks. Confirm the required signal type and terminal assignment before wiring.

06 | Safety, Protection, and Diagnostic Features

The drive provides motor and drive protection functions to support fault detection and commissioning. Its built-in indicators help technicians identify operating status and communication conditions.

• Safe Torque Off: STO function with a stated SIL 3 rating. Validate the complete safety architecture and applicable certification requirements.
• Motor Protection: Thermal protection and motor phase-loss detection.
• Drive Protection: Overtemperature, overcurrent, overload, short-circuit, and DC bus overvoltage protection.
• Supply Monitoring: Detects specified line undervoltage, overvoltage, and phase-loss conditions.
• Operating Faults: Includes overspeed and control-circuit fault protection.
• Local Indicators: Three local diagnostic LEDs, five embedded communication-status LEDs, two option-card status LEDs, and one voltage-presence LED, as supplied.

Diagnostic workflow: Record the displayed fault, check the supply voltage and phase condition, inspect the motor cable, and review the load behavior. Then verify drive parameters and communication status before resetting the fault.

Field example: A conveyor drive trips during acceleration after the production line adds heavier products. The engineer reviews the fault history, compares motor current with the configured motor ratings, and checks the acceleration ramp. The engineer then verifies the mechanical load and duty selection before changing parameters.

This example illustrates a troubleshooting method, not a guaranteed diagnosis. Confirm the actual cause using the drive's fault information and application measurements.

07 | Installation and Commissioning Checklist

1. Confirm the Motor: Record rated voltage, current, power, frequency, speed, and motor type.
2. Check Supply Conditions: Verify the three-phase supply and available short-circuit current.
3. Size the Drive: Select normal-duty or heavy-duty operation according to torque and overload requirements.
4. Prepare the Cabinet: Allow the specified cooling airflow and required installation clearances.
5. Wire Power and Motor Terminals: Follow the manufacturer's conductor sizes, grounding instructions, and terminal torque values.
6. Connect Control Signals: Verify analog scaling, digital-input logic, output assignments, and interlocks.
7. Configure Communication: Set the applicable IP address, network parameters, or Modbus serial settings.
8. Test the Safety Function: Validate STO wiring and the complete safety circuit before machine operation.
9. Run Commissioning Tests: Check motor direction, ramp response, current, stopping behavior, and fault recovery.

The drive uses forced-convection cooling. Keep air passages clear and evaluate cabinet temperature, dust exposure, and cooling performance during commissioning.

08 | Environmental Limits and Compliance

The supplied product information lists EN/IEC 61800-3, EN/IEC 61800-5-1, IEC 61000-3-12, IEC 60721-3, IEC 61508, and IEC 13849-1. Listed product certifications include UL, CSA, TÜV, and CE marking. Confirm the exact approvals and current declarations for the specific model before compliance-sensitive installation.

09 | Applications and Equipment Compatibility

• Food and Beverage: Mixers, conveyors, and shredders requiring adjustable speed control.
• Material Processing: Presses and extruders used in metal, wood, ceramic, stone, and plastics processing.
• Oil and Gas: Compatible pumps, compressors, separators, and drilling equipment.
• Water and Wastewater: Process pumps and selected treatment equipment.
• Marine Systems: Compatible winches, thrusters, and other variable-speed machinery.
• Industrial Handling: Conveyors and process equipment that require controlled acceleration and deceleration.

Final compatibility depends on the motor's current and torque requirements, the mechanical load, braking duty, supply conditions, and the application's safety requirements.

10 | Global PLC Spare HUB's Insight

In practical drive selection, engineers should evaluate starting torque, acceleration time, braking energy, and the motor's rated current together. A motor's nominal kilowatt rating alone does not establish whether a drive will handle the actual process.

Consider a process conveyor that starts under load and stops frequently. The engineer should confirm the heavy-duty current requirement, calculate the stopping behavior, and determine whether a braking resistor is necessary. The engineer should also check cabinet cooling and network communication before commissioning.

Practical recommendation: Provide the motor nameplate, load profile, supply voltage, braking requirements, and control-system details when requesting a replacement. These details help confirm whether the ATV930U55N4 suits the application.

11 | Packaging, Warranty, and Shipping

• Product: Schneider Electric ATV930U55N4 variable speed drive.
• Packaging: Protective shipping packaging according to the confirmed order.
• Accessories: Braking resistors, communication cards, cables, and external accessories are included only when specified in the quotation.
• Warranty: 12-month warranty under the seller's confirmed terms and conditions.
• Dispatch Target: 24–48 hours after order confirmation, subject to stock availability and payment verification.
• Shipping Options: FedEx, UPS, and DHL, subject to destination and service availability.
• International Orders: Transit times depend on destination, customs clearance, and carrier operations.

Contact the sales team to confirm availability, package contents, delivery timing, shipping costs, and warranty coverage before purchase.

12 | Frequently Asked Questions

Q1: How do I decide whether normal-duty or heavy-duty sizing is appropriate?

Review the motor's rated current, starting torque, overload duration, and operating cycle. Use the applicable drive rating and derating instructions rather than relying solely on the motor's kilowatt value.

Q2: What information should I collect before replacing an existing drive?

Record the motor nameplate, supply voltage, control method, parameter backup, communication settings, braking arrangement, and safety-circuit design. Compare these details with the proposed replacement before disconnecting the original equipment.

Q3: What can cause unstable motor speed when using a 4–20 mA reference?

Check the reference source, analog-input scaling, signal common, cable routing, and configured minimum and maximum frequencies. Verify that the controller and drive use matching engineering units and signal ranges.

Q4: How should I assess braking requirements for frequent stopping?

Estimate the load inertia, deceleration time, stopping frequency, and regenerated energy. Confirm the braking chopper capability and select a compatible resistor when required by the manufacturer's sizing instructions.

Q5: What should I verify when integrating the drive with a PLC over Ethernet?

Confirm the supported protocol, network addressing, controller configuration, communication timeout, command source, and status-word mapping. Test loss-of-communication behavior and safety functions independently of ordinary network control.

Request a Quote for ATV930U55N4

Looking for the Schneider Electric ATV930U55N4 Altivar Process drive? Contact Global PLC Spare HUB for pricing, availability, compatibility checks, and shipping options.

• Model: ATV930U55N4
• Series: Altivar Process ATV900
• Rated Power: 5.5 kW normal duty / 4 kW heavy duty
• Supply: Three-phase, 380–480 V
• Request: Quotation, lead time, warranty, and delivery details

Provide your motor and application details to help our team assess the appropriate drive configuration.

Tags