Lenze EVF9322-EV 9300 Vector Frequency Inverter 0.75 kW
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Product Information
The Lenze EVF9322-EV is a 0.75 kW frequency inverter from the 9300 Vector series designed for precise motor speed and torque regulation in industrial drive applications. Operating on a 3-phase AC input voltage between 320 V and 528 V AC (3x 400 V to 480 V AC nominal), it delivers a continuous output current of 2.5 A with an 8 kHz nominal switching frequency and an output frequency range of 0 to 480 Hz. This specific -EV variant is constructed without an internal radio interference filter, allowing panel builders and system integrators to use centralized external EMC suppression solutions. The drive supports V/f control, sensorless vector control, and closed-loop vector control with encoder feedback, making it suitable for material handling, packaging machinery, textile equipment, and general manufacturing systems.
For physical interface integration, the EVF9322-EV includes 4 digital inputs, 2 digital outputs, 2 analog inputs (-10 V to +10 V or 0/4-20 mA), and 2 analog outputs, along with an integrated System Bus (CAN) running up to 500 kbps for multi-axis drive synchronization. The unit also features an Automation Interface (AIF) expansion slot that accepts optional fieldbus communication modules, such as the EMF2133IB PROFIBUS-DP or EMF2178IB CANopen adapters. Commissioning a replacement inverter involves transferring parameter settings from the original unit or loading a saved backup. The drive contains four switchable internal EEPROM parameter sets, which can be programmed or transferred using the optional EMZ9371BC keypad operating module or Lenze Global Drive Control (GDC) software via an EMF2177IB PC adapter. When commissioning a spare, ABC Industrial Parts can assist with parameter extraction from existing units or preparing pre-configured replacements.
System status and fault diagnostic information are available through status LEDs on the front cover, an internal fault history buffer stored under parameter C0168, and real-time readouts via keypad or GDC software. A green DRIVE READY LED signals supply voltage and controller operational state, while a red TRIP / FAULT LED flags warnings or active trip conditions. Common system-level errors like OC1 (overcurrent) or OU (DC bus overvoltage) usually stem from acceleration settings, mains supply fluctuations, or cabling problems. Internal hardware faults such as H05 or unrecoverable memory errors (EEr) indicate control electronics failure that cannot be serviced on site. In these instances, swapping the damaged inverter with a tested replacement unit from ABC Industrial Parts minimizes equipment downtime.
Technical Specifications
| Manufacturer | Lenze |
| Part Number | EVF9322-EV |
| Model / Type | 9300 Vector Frequency Inverter |
| Rated Power | 0.75 kW |
| Supply Voltage Range | 3x 320 V AC to 528 V AC (Nominal 3x 400 V - 480 V AC) |
| Rated Input Current | 2.5 A |
| Continuous Output Current | 2.5 A |
| Output Voltage Range | 3x 0 V to 400 V / 480 V AC |
| Output Frequency Range | 0 Hz to 480 Hz |
| Nominal Switching Frequency | 8 kHz |
| Digital I/O Channels | 4 Digital Inputs / 2 Digital Outputs |
| Analog I/O Channels | 2 Analog Inputs (-10V..+10V, 0/4-20mA) / 2 Analog Outputs |
| Radio Interference Filter | Without RFI Filter (-EV Variant) |
| Onboard Communication | Integrated System Bus (CAN) up to 500 kbps |
| Expansion Slot | Automation Interface (AIF) slot for optional fieldbus modules |
Programming and Configuration
Configuring the Lenze EVF9322-EV frequency inverter is handled via Lenze Global Drive Control (GDC) software or through the pluggable EMZ9371BC keypad operating module. The inverter features four independent, switchable parameter sets stored in internal EEPROM memory, allowing flexible operational profiles for complex machines or multi-recipe production lines. Parameters can be modified directly on the keypad LCD or configured offline using GDC and uploaded to the drive.
When swapping out an old or damaged unit, parameter configuration must be matched precisely to ensure proper motor performance and system interlocks. Parameter datasets can be copied from a running or backed-up unit using the EMZ9371BC keypad transfer function or downloaded directly over the system bus using an EMF2177IB PC System Bus / USB-CAN adapter. If restoring default factory settings is required before commissioning, parameter code C0002 can be set to 1 to reset the drive configuration.
Communication and System Integration
The EVF9322-EV comes equipped with an integrated System Bus (CAN) interface running at communication speeds up to 500 kbps. Terminated via CANIN and CANOUT connection points, this onboard bus supports fast master-to-slave positioning and multi-axis speed synchronization without requiring separate network expansion hardware. Proper line termination using 120-ohm resistors at both ends of the CAN network is required for stable bus operation.
For integration into broader industrial control architecture, the unit includes an Automation Interface (AIF) plug-in slot. This slot supports optional communication modules including the EMF2133IB PROFIBUS-DP module, EMF2178IB CANopen module, as well as optional INTERBUS, DeviceNet, and LECOM interfaces. These modules allow higher-level PLCs to read drive status words, modify setpoints, and receive real-time diagnostic indicators over standard fieldbus networks.
Diagnostics and Status Indication
Real-time diagnostic feedback on the Lenze EVF9322-EV is provided through two LED indicators on the front panel, an internal fault history buffer accessible at parameter code C0168, and status word readouts over fieldbus or system bus networks. Operators can also view active fault codes and operational parameters directly on the display screen of the optional EMZ9371BC keypad module or via the GDC online diagnostic monitor tool.
The status LEDs give immediate visual confirmation of drive health. The green DRIVE READY LED reflects line supply presence and controller enable status, while the red TRIP / FAULT LED flags warning conditions or active trips that disable inverter output. System fault history is retained in non-volatile memory, allowing maintenance technicians to analyze recurring trips and sequence events leading up to a shut-off.
Status LED Indicators
| LED | Color/Status | Meaning |
|---|---|---|
| DRIVE READY | Green - Off / Flashing / Solid ON | Off = No supply voltage or initialization active; Flashing = Controller inhibited / standby; Solid ON = Controller enabled / operating normally. |
| TRIP / FAULT | Red - Off / Flashing / Solid ON | Off = Normal operation / no fault; Flashing = Warning condition active; Solid ON = TRIP active (inverter disabled due to error condition). |
Replacement and Spare Part Considerations
When replacing an existing Lenze drive with an EVF9322-EV unit, confirm that the exact part number suffix matches your existing installation. The -EV designation denotes a drive without an integrated radio interference (RFI) filter. If your enclosure design relies on external filters in the control cabinet, installing a standard filtered model is unnecessary, but replacing an -EV unit with another -EV variant maintains identical mechanical dimensions and panel layout.
Before applying power to a replacement drive, transfer the plugged-in AIF module (such as PROFIBUS or CANopen) from the original unit if fieldbus integration is used. Ensure that all parameter sets, motor control limits, and I/O assignments are downloaded into the replacement unit's EEPROM using either the EMZ9371BC keypad or Global Drive Control software prior to placing the motor back under automatic control.
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 / Overcurrent | Short circuit or extreme overcurrent detected during acceleration or operation. | Short circuit in motor cable, winding short in motor, excessive acceleration ramp, incorrect motor data parameterization. | Check motor cable and insulation, check motor windings for short circuit, increase acceleration time C0012, check motor parameters. |
| OC2 | Overcurrent during Deceleration | Output current exceeded trip limit during deceleration. | Deceleration ramp time too short, braking energy too high without active brake chopper or external resistor. | Increase deceleration time C0013, install external brake resistor or enable brake chopper. |
| OC3 | Overcurrent at Constant Speed | Output current exceeded threshold during steady-state operation. | Sudden load impulse, mechanical blockage, overload, loose motor connection. | Check mechanical drive train for binding or overload, check power terminal wiring. |
| OC5 | I x t Overload | Continuous overload threshold (I x t limit) exceeded. | Motor operated continuously above rated current, drive undersized for mechanical load. | Reduce continuous mechanical load, verify motor and drive sizing. |
| OU | Overvoltage in DC Bus | DC bus voltage exceeded maximum trip threshold (>770 V DC). | Regenerative energy from motor during deceleration, deceleration ramp too fast, mains supply voltage too high. | Extend deceleration time, connect external brake resistor, check mains supply voltage. |
| LU | Undervoltage in DC Bus | DC bus voltage dropped below minimum threshold (<430 V DC for 400 V units). | Mains supply failure, phase failure, input supply voltage too low. | Check mains voltage, check fuses and supply connection. |
| OH | Heatsink Overtemperature | Inverter heatsink temperature exceeded maximum threshold (>90 °C). | Inadequate cooling air supply, fan defective or blocked, ambient temperature too high, heatsink clogged with dirt. | Clean heatsink, ensure adequate ventilation space around unit, check panel cooling fan. |
| OH3 | Motor Overtemperature | Motor temperature sensor (PTC/KTY) reported excessive motor heat. | Motor overloaded, motor cooling fan failed, PTC/KTY wiring interrupted or shorted. | Allow motor to cool down, reduce load, check motor thermistor wiring. |
| OH4 | Inside Temperature High | Internal cabinet / enclosure temperature of inverter exceeded maximum limit. | Control cabinet cooling inadequate, ambient temperature too high. | Improve enclosure ventilation or cooling. |
| CE0 | Automation Interface (AIF) Communication Error | Communication failure between control board and plugged-in AIF module. | AIF module missing, improperly seated, or fieldbus cable disconnected. | Check seating of AIF module, check fieldbus cable connection. |
| CE1 | System Bus (CAN) Communication Error | Communication error or bus-off on System Bus CAN_IN / CAN_OUT interface. | CAN bus cable break, incorrect termination resistor, wrong baud rate, excessive noise. | Check CAN bus wiring, verify 120 ohm line termination resistors at both ends, verify CAN baud rate setting. |
| EEr | EEPROM Checksum Error | Internal EEPROM memory read failure or corrupted parameter data. | Interrupted power supply during parameter saving, corrupted non-volatile memory cell. | Reload factory default settings (C0002 = 1) and reconfigure parameters. If error persists, internal control board hardware fault — unit requires replacement or repair. |
| H05 | Internal Hardware Error | Internal power section or control electronics self-test failure. | Defective internal hardware component, board fault. | Internal hardware fault — return unit for factory repair or replacement. |
| LP1 | Mains Phase Failure | Loss of one phase on the AC mains input supply. | Blown input line fuse, phase loss in facility power grid. | Check mains voltage on all three supply phases (L1, L2, L3) and input fuses. |
| NMAX | Overspeed | Motor speed exceeded maximum allowable speed limit (C0596). | Uncontrolled load driving motor, incorrect feedback settings. | Check mechanical load drive, check speed feedback parameters. |
Frequently Asked Questions
What power rating and voltage range does the Lenze EVF9322-EV inverter support?
The Lenze EVF9322-EV is rated for 0.75 kW power output with a continuous output current of 2.5 A. It operates on a 3-phase AC supply ranging from 320 V to 528 V AC (nominal 3x 400 V to 480 V AC).
What does the -EV suffix in the part number EVF9322-EV represent?
The -EV suffix indicates that this 9300 Vector inverter model is manufactured without an internal radio interference (RFI) filter, making it designed for installations utilizing centralized external EMC suppression inside the control cabinet.
How do I copy parameter settings from a faulty drive to a replacement EVF9322-EV?
Parameter settings stored in the internal EEPROM can be saved and transferred using an EMZ9371BC keypad module or uploaded/downloaded using Lenze Global Drive Control (GDC) engineering software via an EMF2177IB PC System Bus / USB-CAN adapter.
Which fieldbus expansion modules are compatible with the EVF9322-EV?
The inverter features an Automation Interface (AIF) slot that supports plug-in modules such as the EMF2133IB for PROFIBUS-DP, EMF2178IB for CANopen, as well as DeviceNet, INTERBUS, and LECOM modules.
What should I do if the EVF9322-EV displays fault code EEr or H05?
Fault code EEr indicates an EEPROM memory checksum error, which can sometimes be cleared by restoring factory defaults via C0002 = 1 and reloading parameters. Fault code H05 indicates an internal hardware failure. If EEr persists or H05 appears, internal control electronics have failed and the inverter must be repaired or replaced.
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