Lenze 00451021 EVF9323-EV 9300 Vector Frequency Inverter
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Product Information
The Lenze 00451021 EVF9323-EV is a 1.5 kW AC frequency inverter designed for high-precision motor control within the Lenze 9300 Vector family. Engineered for 3-phase AC mains supplies between 320 V and 528 V AC, this drive supplies a rated output current of 3.9 A with an adjustable output frequency spanning 0 to 480 Hz. It supports multiple operational control modes, including open-loop V/f regulation, sensorless vector control, and closed-loop vector feedback, making it well-suited for dynamic applications such as packaging machinery, conveyor systems, winders, and machine tool spindles.
Interfacing the unit with plant automation systems is facilitated by an onboard CAN system bus interface operating at speeds up to 500 kbps via terminal strip X4, as well as an Automation Interface slot for plug-in fieldbus options like PROFIBUS-DP (EMF2133IB), INTERBUS (EMF2102IBC), or LECOM modules. Putting a replacement drive into service requires matching physical configurations and transferring drive parameters. The inverter stores up to four switchable parameter sets in non-volatile memory, which can be uploaded and restored using Lenze Global Drive Control (GDC) software or the optional XT Keypad (EMF2173IB). When replacing a failed unit in an active machine line, ABC Industrial Parts can assist in sourcing a tested replacement drive to ensure swift system recovery.
Diagnostic conditions are indicated directly through panel status LEDs, where a solid green light denotes active operation and a flashing green light signals a controller inhibit, while red LED indications signal active warnings or trip faults. When errors occur, detailed trip codes such as OC1 (overcurrent), OU (DC bus overvoltage), or CE1 (CAN bus fault) are recorded in the internal trip history for rapid analysis via GDC software or the XT Keypad. Simple external checks should verify AC mains input voltages across terminals L1, L2, and L3, bus line termination resistors, and motor cable insulation. If persistent internal hardware errors like H05 or EEPROM faults occur, internal component failures cannot be serviced in the field, making replacement or professional repair through ABC Industrial Parts the most reliable path back to operation.
Technical Specifications
| Rated Power | 1.5 kW |
| Supply Voltage Range | 320 - 528 V AC (3-phase) |
| Rated Output Current | 3.9 A |
| Output Frequency Range | 0 - 480 Hz |
| Control Method | Sensorless Vector / Closed-Loop Vector / V/f Characteristic |
| Integrated Bus Interface | CAN / CANopen (System Bus) |
| System Bus Speed | 500 kbps |
| Parameter Memory Profiles | 4 switchable non-volatile parameter sets |
Programming and Configuration
The Lenze 00451021 EVF9323-EV inverter is programmed and parameterized using Lenze Global Drive Control (GDC) software or directly via the optional XT Keypad (EMF2173IB). Drive parameters govern motor dynamic characteristics, ramp times, thermal thresholds, and I/O terminal functions. The drive features non-volatile internal memory capable of storing four independent, switchable parameter sets, allowing flexible adaptation to different operational machine profiles without re-commissioning.
Configuration transfer during maintenance is straightforward. Using the PC-based GDC software connected via a USB-CAN Adapter (EMF2177IB) or serial interface, technicians can read parameter data from an existing unit and download it directly to a donor or replacement inverter. Alternatively, parameter sets can be copied and transferred using the XT Keypad module, eliminating manual parameter entry during field swapouts.
Communication and System Integration
System communication is natively supported via an integrated CAN system bus interface connected at terminal strip X4. Operating at baud rates up to 500 kbps, this onboard CAN interface facilitates high-speed peer-to-peer data exchange between multiple drives and system controllers, optimizing multi-axis coordination and reducing control cabinet field wiring.
For broader automation network integration, the unit features an Automation Interface (AIF) expansion slot. This slot accepts a wide range of optional communication modules, including PROFIBUS-DP (EMF2133IB), INTERBUS (EMF2102IBC), and LECOM RS-232/RS-485 adapters, allowing seamless fieldbus integration into diverse PLC architectures.
Diagnostics and Status Indication
The drive provides comprehensive diagnostic feedback using two front-panel status LEDs alongside software-accessible trip logs. The green LED indicates operation mode, appearing solid when the controller is enabled and drive output is running, and flashing when controller inhibit (Inverter Disable) is active. The red LED signals system status, illuminating solid during an active fault trip and flashing when a warning threshold is exceeded.
Detailed diagnostic monitoring and fault history logs are accessible using Global Drive Control (GDC) software or the XT Keypad display. Additionally, digital output terminals on the drive can be configured to send hardware trip signals directly to a master PLC to trigger immediate safety or system sequence actions.
Status LED Indicators
| LED | Color/Status | Meaning |
|---|---|---|
| Green LED (Operation) | Green - Solid / Flashing | Solid = Controller enabled / drive running; Flashing = Controller inhibited (Inverter Disable active) |
| Red LED (Fault) | Red - Solid / Flashing | Solid = Fault trip active; Flashing = Warning condition active |
Replacement and Spare Part Considerations
When replacing a failed Lenze 00451021 EVF9323-EV inverter in an existing system, ensure the physical frame size and electrical ratings match the original unit. Although the Lenze 9300 Vector series has been discontinued by the manufacturer, replacement units can be installed directly into existing 9300 Vector racks without physical modifications to mounting structures or basic power cabling.
Before restoring power to the replacement drive, any fieldbus option modules installed in the Automation Interface (AIF) slot—such as PROFIBUS or INTERBUS interfaces—must be transferred from the original unit to the replacement inverter. Additionally, transfer the parameter profiles using GDC software or the XT Keypad to retain custom acceleration profiles, motor feedback parameters, and CAN bus node identifiers.
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 in motor phase or power output stage. | Short circuit in motor winding, short circuit in motor cable, or defective power semiconductor stage. | Check motor and motor cables for short circuits or ground faults. If fault persists with motor disconnected, internal hardware fault — replace or repair unit. |
| OC2 | Earth fault | Ground fault / earth leakage current detected on output terminals. | Ground fault in motor wiring, motor insulation breakdown, or excessive cable capacitance. | Check motor cable insulation resistance with megohmmeter. Inspect motor windings for ground contact. |
| OC5 | I x t overload / Overcurrent during acceleration | Inverter output current exceeded maximum thermal or acceleration threshold. | Acceleration time too short, mechanical stall, motor sized too small for load. | Increase acceleration time (ramp-up time), check mechanical drive for binding, check motor load. |
| OU | Overvoltage DC bus | DC bus voltage exceeded upper limit (>770 V DC). | Deceleration time too short, regenerative energy returned from motor, missing or undersized brake resistor. | Increase deceleration ramp time or install brake module / braking resistor. |
| LU | Undervoltage DC bus | DC bus voltage fell below lower threshold level (<430 V DC). | Mains voltage too low, phase failure in mains supply, power failure. | Check AC mains input voltage and supply fuses/switches. |
| OH | Heatsink overtemperature | Inverter heatsink temperature exceeds maximum allowable limit (>85°C). | Inadequate cabinet ventilation, fan failure, dirty heatsink, ambient temperature too high. | Clean heatsink, ensure cabinet cooling airflow, check enclosure fan operation. |
| OH4 | Motor thermal overload | Motor temperature sensor or PTC thermal switch tripped. | Motor overloaded, insufficient motor cooling, PTC circuit open at terminals X6/1-X6/2. | Check motor load and external motor cooling fan. Check PTC connection. |
| OH7 | Heatsink sensor wire break | Internal heatsink temperature sensor circuit failure. | Broken internal sensor wire or damaged sensor on power board. | Internal hardware fault — return unit for repair or replace inverter. |
| OH8 | Inverter internal overtemperature | Temperature inside inverter housing too high. | Excessive enclosure temperature or internal fan failure. | Improve panel cooling and inspect internal air circulation. |
| CE0 | AIF communication error | Communication failure on Automation Interface slot. | Loose fieldbus module, fieldbus master offline, or cable interruption. | Verify fieldbus cabling, module seating, and master PLC status. |
| CE1 | CAN system bus fault | CANbus message frame error or bus-off condition on CAN interface. | Incorrect baud rate, missing bus termination resistor, wiring noise/fault. | Check CAN wiring, shield grounding, and 120 ohm line termination resistors. |
| EER | EEPROM error | Internal EEPROM checksum error or read/write failure. | Corrupted non-volatile memory or hardware fault. | Reload factory default parameter set. If error persists, internal memory hardware failure — replace unit. |
| H05 | Internal hardware fault | Internal voltage reference or control board hardware failure detected. | Defective control board circuitry. | Internal hardware failure — return unit for repair or replace unit. |
| NMAX | Overspeed fault | Motor actual speed exceeded maximum limit threshold. | Incorrect speed controller parameters, encoder failure, or overhauling load. | Check speed feedback sensor wiring and max speed parameter settings. |
| LP1 | Mains phase failure | Missing input phase on mains line supply. | Blown input fuse, loose line conductor, severe mains unbalance. | Check input power fuses and line voltages at terminals L1, L2, L3. |
| PR0 | Parameter set error | Data corruption detected in loaded parameter set. | Interrupted transfer or corrupted file download. | Reload parameter set into inverter using XT Keypad or GDC. |
Frequently Asked Questions
What software and hardware tools are used to program the EVF9323-EV inverter?
The EVF9323-EV inverter is programmed using Lenze Global Drive Control (GDC) software via a PC link (such as a USB-CAN Adapter EMF2177IB) or directly using the optional XT Keypad module (EMF2173IB).
How can parameters be transferred to a replacement EVF9323-EV drive?
Parameters stored in non-volatile memory can be uploaded from the old unit and written to the replacement drive using GDC software or by saving and restoring parameter sets via the optional XT Keypad.
What do the green and red status LEDs on the front panel mean?
A solid green LED indicates normal running operation, while a flashing green LED indicates a controller inhibit status. A solid red LED signals an active fault trip, and a flashing red LED alerts to a warning condition.
Which fieldbus communication modules can be attached to the EVF9323-EV?
The Automation Interface slot accepts various optional modules including PROFIBUS-DP (EMF2133IB), INTERBUS (EMF2102IBC), and LECOM RS-232/RS-485 modules.
What should be checked if an OC1 overcurrent fault occurs?
Check motor windings and connecting cables for short circuits or ground faults. If the OC1 fault persists even after disconnecting motor wiring from output terminals, an internal power semiconductor failure has occurred and the unit requires repair or replacement.
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