Lenze EVF9324-EV 9300 Vector Frequency Inverter 3.0 kW
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Product Information
The Lenze EVF9324-EV is a 3.0 kW frequency inverter from the 9300 Vector family, designed for dynamic speed and torque regulation of three-phase AC motors. Operating on a three-phase supply voltage range from 320 to 528 V AC, this AC drive delivers a rated continuous output current of 7.0 A with a 150% overload capacity up to 10.5 A for 60 seconds. Output frequencies range from 0 to 480 Hz using field-oriented vector control or configurable V/f characteristics, operating with a standard switching frequency of 8 kHz. Built without an integrated RFI filter, this specific model allows panel builders to select external mains filtering tailored to specific plant electromagnetic compatibility requirements.
For networking and device control, the EVF9324-EV includes an integrated CAN system bus interface operating under CAN specification 2.0B on screw terminals X4 and X5, alongside a modular Automation Interface slot. Putting a spare inverter into service requires configuring the parameters to match the target machine, as up to four switchable parameter sets can be stored directly in the drive non-volatile memory. Configuration files can be transferred using the optional Keypad XT module (EMF2102IB) or via Lenze Global Drive Control software with LECOM or PROFIBUS-DP adapters (EMF2133IB). Support from ABC Industrial Parts can assist in preparing replacement drives or restoring saved parameter configurations to minimize commissioning downtime.
System state monitoring is available directly on the front panel via LED indicators for ready, pulse inhibit, and fault conditions, as well as through internal diagnostic code registers C0161 to C0164. Line supply faults, thermal overloads, and overvoltage conditions are signaled with specific error codes to aid field troubleshooting. When critical failures occur—such as output short-circuit trips with the motor disconnected, EEPROM corruption, or internal hardware faults—board-level repairs or drive replacements are required. ABC Industrial Parts supplies fully tested exchange units and repair services to help restore production systems promptly.
Technical Specifications
| Manufacturer | Lenze |
| Part Number | EVF9324-EV |
| Model / Type | EVF9324-EV |
| Product Family | 9300 Vector |
| Component Type | Frequency Inverter |
| Rated Power | 3.0 kW |
| Supply Voltage Range | 320 - 528 V AC |
| Rated Current | 7.0 A |
| Maximum Output Current | 10.5 A (150% overload for 60 s) |
| Output Voltage | 0 - Mains Voltage (400 V AC) |
| Output Frequency Range | 0 - 480 Hz |
| Switching Frequency | 8 kHz (adjustable 2 - 16 kHz) |
| Control Method | Field-Oriented Vector Control / V/f Characteristic |
| Integrated RFI Filter | None |
Programming and Configuration
Drive setup and parameter adjustments for the EVF9324-EV are managed via Lenze Global Drive Control (GDC) PC software or through the plug-in Keypad XT (EMF2102IB). The drive contains non-volatile EEPROM memory capable of retaining up to four complete, switchable parameter sets. This capability permits multiple operational profiles to be stored within a single drive for distinct processing modes or changing machine requirements.
During drive replacement, parameter sets can be copied from the original unit using the Keypad XT module's backup function or downloaded using GDC software. If parameter set corruption occurs (code EEr), saved configuration profiles can be reloaded. In situations involving corrupted memory values, executing code C0002 resets the inverter to factory defaults prior to restoring valid parameters.
Communication and System Integration
The EVF9324-EV features built-in CAN system bus communication compliant with CAN specification 2.0B via screw terminals X4 and X5. This interface enables high-speed cross-communication between multiple drives, direct parameter transfers, and decentralized multi-axis synchronization without requiring external option cards.
For integration into higher-level industrial networks, the inverter features a dedicated Automation Interface (AIF) slot. This expansion port accommodates plug-in communication modules including PROFIBUS-DP adapters (EMF2133IB), Interbus options, and LECOM serial adapters (EMF2102IB, EMF2111IB, EMF2113IB) supporting RS232 or RS485 lines. Network operation requires setting correct baud rates and installing matching bus termination resistors across the fieldbus line.
Diagnostics and Status Indication
Drive operating status and fault history are monitored via front-panel LEDs and diagnostic memory registers C0161 through C0164. Operating conditions and error logs can be reviewed using the Keypad XT module or the diagnostic window within Global Drive Control software. Three LEDs provide immediate visual feedback regarding drive readiness, pulse inhibit, and fault states.
Status LED Indicators
| LED | Color/Status | Meaning |
|---|---|---|
| READY | Green - Solid | Operational state: lit when inverter is ready for operation or actively driving motor. |
| IMP / Inhibit | Yellow - Solid | Pulse inhibit active (inverter disabled via terminal or controller logic). |
| FAIL | Red - Flashing / Solid | Fault state active. Flashing or steady illumination indicates an active drive trip or error condition. |
Replacement and Spare Part Considerations
When installing a replacement Lenze EVF9324-EV inverter, confirm that power ratings, current limits, and terminal wiring match the existing installation. Because this variant does not include an integrated RFI filter, verify that external mains filters are present if required to satisfy electromagnetic compatibility standards.
A replacement drive will not run the motor correctly without loading the application-specific parameter set. Transfer saved parameters using the Keypad XT module or upload them from GDC software prior to starting the drive. In cases where the original unit cannot communicate via its AIF port, parameter extraction from a faulty board may be required to recover machine settings.
Error Codes & Fault Codes
The following error codes may be displayed during operation or diagnostics:
| Code | Name | Description | Possible Cause | Recommended Action |
|---|---|---|---|---|
| OC1 | Short circuit / Earth fault | Instantaneous overcurrent on drive output phase, earth fault, or short circuit. | Motor cable short-circuit, ground fault, or power transistor fault. | Check motor and output cables for short circuits or insulation faults. If error persists with motor disconnected, internal hardware damage has occurred — return unit for repair. |
| OC2 | Overcurrent during acceleration | Output current exceeded trip limit during motor acceleration. | Acceleration time set too short, motor mechanically jammed, or motor cable too long. | Increase acceleration time ramp, check mechanical load and motor sizing. |
| OC5 | I x t Overload | Continuous overload limit exceeded (drive thermal protection trip). | Drive operates above rated current for too long. | Reduce motor load, optimize duty cycle, or verify drive sizing. |
| OU | Overvoltage DC bus | DC bus voltage exceeded upper threshold limit. | Excessive regenerative energy during deceleration, deceleration ramp too short, or missing/faulty brake chopper/resistor. | Increase deceleration ramp time or check/install braking resistor. |
| LU | Undervoltage DC bus | DC bus voltage fell below minimum allowable operating threshold. | Mains supply phase failure, low line voltage, or temporary power interruption. | Check supply voltage, line fuses, and main contactor state. |
| OH | Heatsink overtemperature | Inverter heatsink temperature exceeds limit (> +85 °C). | Cooling fan clogged or failed, ambient temperature too high, insufficient ventilation clearance. | Clean heatsink, ensure adequate cabinet ventilation, verify fan operation. |
| OH4 | Motor thermal overload (PTC) | Motor thermistor/PTC sensor triggered on terminal X10. | Motor overheating, mechanical overload, or broken thermistor wire. | Check motor cooling, mechanical load, and thermistor wiring. |
| OH7 | Motor I²t overload | Motor internal thermal model calculated excessive motor heat. | Motor operated at low speed under high torque for prolonged period. | Reduce motor load or enable forced-air motor cooling. |
| CE0 | Automation Interface (AIF) communication fault | Communication interruption between inverter and optional fieldbus module in AIF slot. | Module loose, fieldbus network fault, or defective fieldbus card. | Check plug connection of AIF module, inspect network cabling. |
| CE1 | CAN system bus communication fault | Communication error on internal CAN system bus (X4/X5 terminals). | Bus line interrupted, wrong baud rate, missing bus termination resistor. | Verify CAN wiring, termination, and baud rate configuration. |
| EER | EEPROM memory failure | Non-volatile memory checksum failure or hardware read/write error. | Internal EEPROM memory corruption or control board failure. | Internal control board hardware failure — attempt factory reset (C0002); if error persists, return unit for repair. |
| EEr | Parameter set fault | Selected parameter set corrupted or invalid. | Incomplete transfer or power loss during write process. | Reload parameter set from GDC or Keypad XT. |
| H05 | Internal hardware fault | Inverter controller detected internal system malfunction. | Control board hardware issue or corrupted system firmware. | Internal board failure — replace the unit or contact Lenze service. |
| NMAX | Over-speed limit trip | Motor actual speed exceeded maximum defined threshold (C0596). | Incorrect speed controller tuning, external drive torque overhauling motor. | Check motor encoder setup, speed controller parameters, and load conditions. |
Frequently Asked Questions
How are parameter settings transferred to a replacement EVF9324-EV drive?
Parameter sets can be transferred directly using the plug-in Keypad XT module (EMF2102IB) without a PC, or uploaded and downloaded using Lenze Global Drive Control (GDC) software via a LECOM or PROFIBUS communication adapter.
Does the Lenze EVF9324-EV have an integrated RFI filter?
No, the EVF9324-EV model is manufactured without an integrated RFI filter. External line filtering must be installed on the mains input if specific EMC standards are required.
Which fieldbus modules can be used with the EVF9324-EV?
The inverter includes an integrated CAN system bus on terminals X4 and X5. Optional networks such as PROFIBUS-DP (EMF2133IB), Interbus, and LECOM RS232 or RS485 adapters (EMF2102IB, EMF2111IB, EMF2113IB) can be installed in the Automation Interface (AIF) slot.
What does fault code OC1 indicate and what action is required?
Fault code OC1 indicates a short circuit or earth fault on the drive output. Inspect motor cables and windings for insulation failures. If OC1 persists after disconnecting the motor, an internal transistor or hardware failure has occurred requiring unit repair or replacement.
What is indicated by a solid yellow LED labeled IMP / Inhibit?
A solid yellow IMP / Inhibit LED indicates that pulse inhibit is active, meaning the inverter output stage has been disabled via control terminal commands or internal software logic.
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Specific firmware and hardware versions
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