Lenze EVF9326-EVV004 EVF9326-EV V004 9300 Vector Frequency Inverter

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Product Information

Product Family: 9300 Vector | Series: 9300 Vector

The Lenze EVF9326-EVV004 is an 11 kW vector-controlled frequency inverter belonging to the Lenze 9300 Vector series. Operating on a three-phase supply voltage range of 320 V to 550 V AC at 48 to 62 Hz, this inverter delivers a rated continuous output current of 23.5 A at 400 V AC and a maximum transient output current of 35.3 A for up to 60 seconds. Designed as a V004 variant, the unit is constructed without an internal radio interference filter, allowing tailored installation alongside external mains suppression filters such as the Lenze EZF series. The drive provides versatile motor control methods, including standard V/f characteristic control, sensorless vector control, and closed-loop vector control with encoder or resolver feedback for dynamic motion applications.

Integration into automation architectures is supported through an onboard CAN System Bus operating at up to 500 kbit/s, along with dedicated Automation Interface (AIF) and Function Interface (FIF) expansion slots. These slots accommodate optional communication adapters, such as the EMF2133IB or EMF2131IB PROFIBUS modules, as well as the EMZ9371BC keypad operating module. When commissioning a spare unit, the drive requires parameter transfer and configuration alignment matching the original drive setup. Parameters can be managed and restored using Lenze Global Drive Control (GDC) PC software or transferred directly via the plug-in keypad. ABC Industrial Parts can support maintenance teams with replacement units and parameter transfer procedures to restore system operation without delay.

Diagnostic information is made available directly on the drive through three front-panel status LEDs and internal diagnostic memory. A solid red LED indicates an active TRIP condition where the drive output is inhibited, a green LED indicates controller enable and drive readiness, and a yellow LED signals an active warning or torque limit state. Detailed historical fault records can be accessed via TRIP memory codes C0168 and C0169. For common issues such as DC bus overvoltage (OU), output short circuits (OC1), or line phase failures (LP1), initial checks should target supply lines, motor cables, braking resistors, and parameter ramps. When internal hardware errors like H05 or unresolvable EEPROM failures (EE) occur, component-level repairs or a tested replacement drive from ABC Industrial Parts offer a fast recovery path.

Technical Specifications

Rated power11 kW
Supply voltage400 V AC
Supply voltage range320 - 550 V AC
Supply frequency range48 - 62 Hz
Mains rated current27 A
Continuous output current23.5 A
Maximum output current (60s)35.3 A
Output voltage range0 - 400 V AC
Output frequency range0 - 480 Hz
Switching frequency8 kHz
Power loss380 W
Integrated busSystem Bus (CAN), up to 500 kbit/s
Digital inputs7 (6 programmable, 1 enable)
Digital outputs5 (4 programmable, 1 relay contact)
Analog inputs2 (-10V...+10V, 0...10V, 0/4...20mA)
Analog outputs2 (-10V...+10V, 0...10V)

Programming and Configuration

Programming and parameterization of the Lenze EVF9326-EVV004 vector inverter are conducted using Lenze Global Drive Control (GDC) PC software or the optional EMZ9371BC keypad operating module. The inverter stores operating parameters, motor maps, control configurations, and I/O assignments in an internal EEPROM. When uploading or modifying parameters, GDC software enables real-time monitoring and parameter set backing up.

During unit replacement or routine maintenance, parameter sets must be restored to match the specific application requirements. Parameter errors such as P12 indicate invalid parameter set data or version inconsistencies during the load process, requiring re-commissioning or a clean reload from a known valid GDC parameter backup. Care should be taken during write cycles to prevent power loss or electromagnetic interference, which can cause checksum errors in internal EEPROM parameter storage.

Communication and System Integration

The Lenze EVF9326-EVV004 features an integrated System Bus interface based on the CAN protocol, supporting communication rates up to 500 kbit/s. This integrated bus allows multi-axis synchronization and direct data exchange between drives without requiring additional controller hardware. Network stability depends on correct bus topology, including 120-ohm line termination resistors installed at both physical ends of the CAN network.

For broader fieldbus integration, the unit features plug-in Automation Interface (AIF) and Function Interface (FIF) expansion slots. Installing fieldbus modules such as the EMF2133IB or EMF2131IB enables direct connection to PROFIBUS-DP networks. Dedicated diagnostic codes monitor network communication: code CE0 indicates an AIF module communication fault, CE1 signals a CAN System Bus error or bus-off condition, and CE2 flags a process data monitoring timeout when expected master PDO messages are interrupted.

Diagnostics and Status Indication

Real-time status monitoring on the EVF9326-EVV004 is provided via front-panel status LEDs and internal memory logging. The three-color LED array gives immediate visual feedback regarding drive readiness, active warnings, and trip conditions. Further diagnostic depth is accessible via codes C0168 and C0169 in the TRIP memory log, which records preceding fault events for effective troubleshooting.

Status LED Indicators

LEDColor/StatusMeaning
Red LEDRed - Solid/ActiveFault active (TRIP condition). Drive output is inhibited.
Green LEDGreen - Solid/FlashingController enable active / Drive operation ready (flashing = controller enable missing or pulse inhibit active).
Yellow LEDYellow - Solid/ActiveWarning state active or current/torque limit reached.

Replacement and Spare Part Considerations

When replacing an existing Lenze 9300 Vector inverter with the EVF9326-EVV004, verification of the exact model suffix is critical. The V004 designator specifies that this inverter lacks an integrated radio interference suppression filter. If replacing an integrated-filter variant or installing into an environment with strict EMC compliance standards, an external mains filter such as a Lenze EZF series filter must be installed in the supply line.

In addition to hardware compatibility, replacing a drive requires transferring all configuration data. The replacement unit will not operate correctly until the parameter set—including motor data, ramp settings, I/O configuration, and bus node addresses—is uploaded from a backup file or copied via the EMZ9371BC keypad. Any optional AIF fieldbus modules (such as PROFIBUS EMF2133IB / EMF2131IB) must be moved from the existing drive to the replacement and verified for correct seating.

Error Codes & Fault Codes

The following error codes may be displayed during operation or diagnostics:

CodeNameDescriptionPossible CauseRecommended Action
OC1Short CircuitShort circuit at the power output terminals or earth short.Short circuit in motor cable, motor winding insulation defect, phase-to-phase short, motor power cable ground fault.Check motor cable and motor insulation; check motor phase connections; verify power output stage. Internal hardware defect if error persists with motor disconnected.
OC2Earth FaultEarth fault / ground fault detected at output.Ground connection in motor cable, motor winding short to ground, excess capacitive cable charging currents.Check motor cable for earth short; test motor winding insulation resistance to earth.
OC5I x t OverloadOvercurrent during acceleration / continuous current overload.Acceleration time set too short, mechanical blockage or overload on motor, incorrect motor parameter configuration.Increase acceleration time; check mechanical load for jamming; verify motor nameplate settings.
OUOvervoltage DC BusDC bus voltage exceeds upper threshold limit.Deceleration ramp time too short (generator energy returned from motor), braking resistor missing or damaged, mains voltage too high.Extend deceleration time (deceleration ramp); install/check external braking chopper and resistor; verify mains supply voltage.
LUUndervoltage DC BusDC bus voltage fell below minimum threshold limit.Mains supply failure, phase loss in supply line, mains input voltage too low, pre-charge circuit fault.Measure mains voltage; check supply fuses and line contactor; check power wiring connections.
OHHeatsink OvertemperatureInverter heatsink temperature exceeds limit.Ambient temperature too high (>45°C/50°C), fan failure or clogged heat sink, insufficient cabinet ventilation.Clean heatsink cooling fins; check internal cabinet cooling and enclosure fan operation; allow drive to cool down.
OH4Motor OvertemperatureMotor temperature sensor input triggered fault.Motor thermal overload, motor thermal sensor (PTC/TK) activated on terminal T1/T2.Check motor loading; check motor cooling fan; inspect motor temperature sensor connection.
OH7Inverter Internal Temperature LimitInternal air temperature inside inverter housing exceeds thermal limit.Inverter internal fan failure, excessive ambient temperature inside control cabinet.Improve enclosure ventilation, replace internal fan. Internal hardware failure — return unit for repair if fan is operational.
OH8Motor Temperature Sensor Wire BreakOpen circuit in motor thermal sensor cable.Interrupted wire connection on motor thermistor input terminals T1/T2.Check wiring to motor PTC/TK sensor; check terminal tightening torque.
EEEEPROM Checksum ErrorMemory checksum error in internal EEPROM parameter storage.Electromagnetic interference during parameter saving, power cycle during write operation, EEPROM chip failure.Reload factory default settings and reload parameter backup. Internal hardware fault — return unit for repair if error persists.
CE0Communication Error AIFCommunication fault on Automation Interface module slot.Loose fieldbus connector, missing fieldbus module, fieldbus network master timeout.Check seating of AIF fieldbus module; check fieldbus line connection and master PLC status.
CE1CAN Inhibit / System Bus ErrorSystem Bus (CAN) communication fault.CAN bus cable disconnection, missing termination resistors (120 Ohm), baud rate mismatch, CAN controller in Bus-Off state.Check System Bus wiring; check line termination resistors at both bus ends; verify baud rate settings on all bus nodes.
CE2CAN Time-OutSystem bus process data monitoring time-out.Master device stopped sending periodic PDO messages, cable break in CAN network.Check host controller program and communication cable integrity.
EErExternal FaultTrip command initiated via digital input assigned to external fault function.External fault contact opened/closed at connected digital terminal.Inspect external peripheral safety devices connected to assigned digital input.
H05Hardware Fault InternalInternal microcontroller or power board hardware monitoring fault.Defective control board logic or internal supply voltage failure.Internal hardware fault — repair required or replace unit.
NMAXOverspeedMotor speed feedback exceeded maximum limit (1.2 x max frequency).Incorrect feedback setup, encoder pulse noise, runaway load state.Verify speed controller gains, check encoder mechanical coupling and wiring shielding.
P12Parameter Set ErrorInvalid parameter set data detected during load process.Parameter file corruption or incompatible firmware version during set restore.Reload parameter set from GDC software or re-commission parameter values.
Sd1Resolver / Speed Feedback FaultFeedback fault or loss of signal from resolver/encoder interface.Feedback cable disconnected, open circuit in encoder track, defective resolver/encoder sensor.Check feedback cable and X8 terminal connections; verify shield grounding; test encoder unit.
Sd2Encoder Track Signal FailureMissing or corrupted track A / track B signals from incremental encoder.Intermittent wiring fault, encoder power supply fault, encoder signal interference.Inspect encoder cable, check 5V/12V encoder power supply, ensure shielded twisted pair wiring is used.
Sd3Encoder Zero Track FaultFault detected in zero pulse (index track) signal.Spurious pulses on zero track, missing zero mark.Check noise suppression on encoder wiring; check encoder hardware.
LP1Mains Phase FailureLoss of single phase on 3-phase AC input supply.Blown main fuse, loose power terminal connection, unstable line supply.Check supply line fuses and verify line voltage across all three incoming AC phases.

Frequently Asked Questions

What does the V004 designation mean on the Lenze EVF9326-EVV004?

The V004 designation indicates that the inverter is built without an internal radio interference filter. External mains suppression filters, such as the Lenze EZF series, must be installed if site EMC standards require line filtering.

What software is used to configure and back up parameter sets for this inverter?

The EVF9326-EVV004 is configured using Lenze Global Drive Control (GDC) PC software or manually via the plug-in EMZ9371BC keypad module.

How do I resolve an OC1 short circuit fault code on the drive?

Check the motor cables, terminal connections, and motor winding insulation for short circuits or ground faults. If the OC1 fault persists after disconnecting the motor leads, an internal power stage hardware defect is indicated.

Can I connect the EVF9326-EVV004 to a PROFIBUS network?

Yes, PROFIBUS connectivity is supported by installing an optional fieldbus expansion module, such as the EMF2133IB or EMF2131IB, into the Automation Interface (AIF) slot.

What does a flashing green status LED indicate?

A flashing green LED indicates that the drive controller is ready, but controller enable is missing or a pulse inhibit state is active.

What steps are required when commissioning a replacement EVF9326-EVV004 drive?

Ensure external EMC filtering is addressed, transfer option modules (such as AIF fieldbus cards), and download the saved parameter configuration using Lenze GDC software or the EMZ9371BC keypad before enabling the drive output.

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Specific firmware and hardware versions

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