Lenze EVF9325-EV 9300 Series Vector Frequency Inverter
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Product Information
The Lenze EVF9325-EV is a 5.5 kW frequency inverter belonging to the Lenze 9300 Vector series, engineered for speed and torque control of 3-phase asynchronous AC motors. Operating across a supply voltage range of 320 V AC to 528 V AC (3 AC 400/480 V nominal), the unit delivers a continuous rated output current of 13 A with a peak overload capacity of 19.5 A for up to 60 seconds. Drive control capabilities include sensorless vector control and adjustable linear or quadratic V/f characteristic curves across an output frequency range of 0 to 480 Hz at an 8 kHz switching frequency. As a designated -EV suffix model, this panel-mount inverter is constructed without an internal RFI radio interference filter, making it designed for installation in machinery configurations that utilize centralized external EMC filtering.
To integrate into automated production systems, the drive features a built-in CAN system bus interface operating up to 500 kbps for drive-to-drive synchronization, along with a modular automation slot supporting optional fieldbus communication modules such as PROFIBUS-DP (EMF2133IB), DeviceNet (EMF2173IB), INTERBUS (EMF2113IB), and LECOM RS232/RS485 adapters. Commissioning a replacement unit requires restoring the machine parameter set rather than simple plug-and-play installation. Up to four internal parameter sets can be stored in non-volatile EEPROM and transferred using Lenze Global Drive Control (GDC) software or the EMF2102IB XT operating keypad. When swapping out a damaged drive on an active production line, technical support from ABC Industrial Parts can assist in obtaining and cloning existing configuration files to ensure full compatibility.
Visual status evaluation is provided directly on the front panel via three diagnostic LEDs: Green indicates active operational readiness, Yellow signals controller inhibit or warning threshold events, and Red illuminates upon a fault condition that inhibits drive output. Detailed fault codes can be interrogated using the XT LCD keypad log, GDC software online monitoring, or direct diagnostic registers C0009, C0161, C0168, and C0183. First-line troubleshooting should include verifying input phase voltages, motor insulation resistance, and 120-ohm CAN bus line terminations. If persistent hardware faults such as power section failures (H05) or EEPROM memory errors (EEr) occur, internal component repairs are required; obtaining a fully tested exchange unit from ABC Industrial Parts provides a rapid path to restoring production uptime.
Technical Specifications
| Manufacturer | Lenze |
| Part Number | EVF9325-EV |
| Model / Type | 9300 Series Vector Frequency Inverter |
| Rated Power | 5.5 kW |
| Supply Voltage Range | 320 - 528 V AC |
| Nominal Input Voltage | 3 AC 400/480 V AC |
| Rated Output Current | 13 A |
| Maximum Output Current | 19.5 A (60 s) |
| Power Dissipation | 220 W |
| Output Frequency Range | 0 - 480 Hz |
| Switching Frequency | 8 kHz |
| Control Method | Sensorless Vector Control / V/f Characteristic Control |
| Integrated Bus System | CAN System Bus (500 kbps) |
| RFI Filtering | Without Integrated RFI Filter (-EV) |
Programming and Configuration
Parameterization of the Lenze EVF9325-EV frequency inverter is carried out through Lenze Global Drive Control (GDC) engineering software or the portable EMF2102IB XT keypad module. The inverter supports up to four independent parameter sets stored in non-volatile internal EEPROM memory, allowing flexible operational modes without external memory cards.
During initial setup or drive replacement, parameter sets can be cloned directly from a functioning drive or uploaded from a backup file created in GDC. Key drive settings including motor nameplate data, acceleration and deceleration ramps, control profile selection, and diagnostic registers like C0002, C0009, C0161, C0168, and C0183 must be properly aligned to maintain motor protection and application synchronization.
Communication and System Integration
Network integration for the Lenze 9300 Vector series relies on an onboard CAN system bus operating at communication speeds up to 500 kbps. This integrated bus allows high-speed drive-to-drive communication and direct connection to master PLCs without requiring additional communication hardware.
For broader fieldbus architecture compatibility, the EVF9325-EV includes a dedicated automation slot designed for plug-in interface modules. Supported communication options include the EMF2133IB PROFIBUS-DP module, EMF2173IB DeviceNet module, EMF2113IB INTERBUS module, and LECOM RS232/RS485 adapters, enabling simple integration into multi-vendor industrial networks.
Diagnostics and Status Indication
Diagnostic monitoring on the EVF9325-EV includes front panel LED indication, keypad history log reviews, and real-time parameter tracking through Lenze Global Drive Control (GDC) software. Diagnostic registers such as C0009, C0161, C0168, and C0183 provide real-time status data, fault history logs, and operational values for rapid troubleshooting.
Status LED Indicators
| LED | Color/Status | Meaning |
|---|---|---|
| Green LED (Operation / Ready) | Green - Solid / Active | Controller enabled and active; drive is ready for operation or running. |
| Red LED (Trip / Fault) | Red - Solid / Active | Fault present; controller output inhibited. Check fault message code on display or software. |
| Yellow LED (Notice / Warning) | Yellow - Solid / Active | Controller inhibit active or warning limit exceeded (e.g. current limit reached). |
Replacement and Spare Part Considerations
When replacing an existing EVF9325-EV inverter, ensure the replacement unit matches the exact model number including the -EV suffix. This suffix designates the absence of an internal RFI filter, meaning the application relies on external EMC filters. Installing a filtered variant in systems configured for external filtering may cause electrical incompatibilities.
Before removing a faulty inverter, back up the active parameter set using GDC software or clone it using an EMF2102IB XT keypad. Once the physical replacement is mounted and field wiring is reconnected, write the stored parameter set to the non-volatile EEPROM of the new drive and verify CAN bus node addressing and termination resistors. While the Lenze 9300 series has been discontinued, the Lenze i550 cabinet frequency inverter platform is recommended for modern system migrations.
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 | Overcurrent during acceleration or short circuit on output motor terminals | Short circuit in motor cable, winding contact, acceleration time set too short | Check motor wiring and insulation, increase acceleration time, verify motor power rating |
| OC2 | Earth fault / Ground fault | Ground fault detected in output cable or motor windings | Earth fault in motor cable or motor, excessive cable capacitance | Check motor and cable insulation against earth ground using insulation tester |
| OC3 | Overcurrent during deceleration | Overcurrent during braking or deceleration phase | Deceleration ramp set too short, high load inertia without brake chopper | Extend deceleration time or connect external brake resistor and brake unit |
| OC4 | Overcurrent at constant speed | Overcurrent during constant speed operation | Sudden load impulse, mechanical blockage, motor overload | Check mechanical load for binding, verify motor parameter setting |
| OC5 | I2t motor overload | I2t thermal overload monitoring of the motor has tripped | Continuous operation above motor rated current without adequate cooling | Check motor load, adjust I2t monitoring parameters, verify forced cooling fan function |
| OU | Overvoltage in DC bus circuit | DC bus voltage exceeds upper threshold limit | Generative energy during deceleration, deceleration time too fast, brake resistor open circuit | Extend deceleration time, verify brake module connection and brake resistor resistance |
| LU | Undervoltage in DC bus circuit | DC bus voltage falls below lower operating threshold | Mains supply voltage too low, supply phase failure, main power supply interruption | Check input line voltage and fuses, verify mains supply cables |
| OH | Heatsink temperature alarm / trip | Heatsink temperature exceeded permissible maximum operating limit (> 90 °C) | Cooling fan failed, heatsink dirty or blocked, ambient temperature too high, switching frequency too high | Clean heatsink, check fan operation and cabinet ventilation, lower switching frequency |
| OH3 | Inside drive overtemperature | Internal control board temperature exceeded maximum limit | Ambient temperature inside control enclosure too high | Improve enclosure cooling and air circulation |
| OH4 | Motor PTC / thermal sensor fault | Motor thermistor (PTC) or thermal contact opened due to motor overheating | Motor overheating, cooling air intake blocked, thermistor wire break | Allow motor to cool, check motor fan and thermistor wiring |
| OH7 | Heatsink temperature warning | Heatsink temperature approaching maximum limit | High load or inadequate cooling | Check fan and ambient enclosure cooling |
| OH8 | Motor temperature warning | Calculated motor temperature approaching maximum limit | Motor operating near thermal threshold | Reduce load or increase motor speed/cooling |
| CE0 | CAN bus communication fault | System bus (CAN) communication error or bus-off state | Bus cable broken, incorrect bus termination resistors, wrong baud rate setting | Check CAN wiring, shield grounding, 120 ohm line termination, and node address settings |
| CE1 | Automation module fault (Slot 1) | Communication interruption to optional fieldbus module in automation slot | Module loose, fieldbus master offline, network cable disconnected | Verify fieldbus module seating, check fieldbus cable and master controller state |
| CE2 | Automation module internal error | Communication fault between drive control board and installed fieldbus module | Hardware error in fieldbus module or internal interface failure | Reseat module or replace fieldbus module; internal hardware failure if persistent |
| EEr | EEPROM memory error | Non-volatile memory access or checksum failure | EEPROM corrupted by power loss during write or defective EEPROM chip | Reload factory default parameters; internal hardware error if defect remains - replace unit |
| H05 | Internal power section hardware error | Internal hardware fault in power stage or driver board | Defective power transistor (IGBT), gate driver, or internal current sensor failure | Internal hardware failure — return unit for repair or replace inverter |
| H10 | Internal voltage supply error | Internal 15V / 5V control power supply voltage out of tolerance | Faulty switch-mode power supply on control board or overloaded 24V supply output | Check external 24V load on control terminals; if persistent, internal board fault — return for repair |
| LP1 | Mains phase failure | Failure of one line phase on input power supply | Blown input line fuse, loose main power supply terminal connection | Check line supply voltages and input fuses |
| NMAX | Maximum speed exceeded | Actual motor speed exceeds parameter C0011 maximum limit | Incorrect encoder feedback, field weakening settings incorrect, overspeed load driving motor | Check encoder feedback signals, verify parameter C0011 limit and motor nameplate values |
| P12 | Parameter set error | Active parameter set invalid or corrupted during transfer | Power failure during parameter write or incompatible parameter set loaded | Re-download parameter set using GDC or load factory defaults (C0002) |
| Pr | Program / system error | Internal microcontroller program execution error | EMC noise interference or control board micro-controller failure | Ensure proper grounding/shielding; power cycle drive. If error persists, replace unit |
Frequently Asked Questions
What software is used to configure the Lenze EVF9325-EV inverter?
The drive is configured using Lenze Global Drive Control (GDC) software or manually using the plug-in EMF2102IB XT keypad.
Does the EVF9325-EV include an internal RFI filter?
No, the -EV suffix indicates that this model is supplied without an internal RFI filter and requires external line filtering for EMC compliance.
How are drive parameter backups stored and transferred?
Up to four parameter sets are stored in non-volatile internal EEPROM. Parameters can be backed up and restored via GDC software or cloned using the EMF2102IB XT keypad module.
What optional fieldbus networks are supported?
In addition to the integrated CAN system bus, the drive supports plug-in fieldbus modules including PROFIBUS-DP (EMF2133IB), DeviceNet (EMF2173IB), INTERBUS (EMF2113IB), and LECOM RS232/RS485.
What does a solid Red LED indicate on the front panel?
A solid Red LED indicates an active trip or fault condition that inhibits drive output. The specific error code can be read on the XT keypad display or via GDC software.
What is the recommended modern successor for the Lenze 9300 Vector series?
The Lenze i550 cabinet frequency inverter series is recommended for modernizing systems equipped with legacy 9300 Vector drives.
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