Lenze LENZE-8301 AC Inverter – 8300 Series 0.37 kW Drive
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Product Information
The Lenze LENZE-8301 (also cataloged as EVF8301-E, 8301-E, or 8301-S) is a compact AC frequency inverter from the Lenze 8300 series designed to regulate speed and torque in standard three-phase asynchronous motors up to 0.37 kW (0.5 HP). Operating from a single-phase 230 V AC supply with an input range of 180 to 264 V AC, this drive converts single-phase power into a variable three-phase output from 0 to 230 V AC over a frequency range of 0 to 480 Hz. With a continuous rated output current of 2.4 A and a 150% temporary overload capacity of 3.6 A for 60 seconds, the inverter reliably manages peak startup demands in small belt conveyors, centrifugal pumps, HVAC ventilation fans, and packaging equipment. Housed in an IP20 enclosure, the drive supports configurable linear or quadratic V/f characteristic curves to optimize motor performance across diverse industrial applications.
Connecting and commissioning the drive is handled through integrated screw terminals for programmable digital inputs covering Start/Stop, Direction, and JOG functions, along with an analog setpoint input supporting 0–10 V and 0/4–20 mA signals. The unit also includes an analog output for actual frequency monitoring and a programmable changeover relay contact for ready and fault signaling. Putting a spare drive into service requires matching motor parameters and application settings. Parameter sets can be rapidly cloned using the optional 8371 plug-in keypad operating module or transferred using Global Drive Control (GDC) PC software via a plug-in LECOM RS232 or RS485 communication module (2102). Maintenance technicians preparing a spare unit can rely on ABC Industrial Parts for sourcing compatible drives and supporting parameter extraction from existing machinery.
Real-time operational status is indicated by front-panel LEDs, where a solid green light indicates mains connection and operational readiness, and a solid red light signals an active TRIP condition with disabled outputs. Detailed diagnostic feedback is available through numerical error codes on the 8371 keypad module, status relay switching, or serial monitoring via GDC software. Drive faults cover specific events such as overcurrent during acceleration or steady operation (OC1, OC3), motor earth faults (OC4), DC bus overvoltage or undervoltage (OU, LU), and heatsink or motor thermal overloads (OH, OH4). Internal control board issues, such as EEPROM memory errors (EE), require clearing parameters to defaults; if hardware faults persist, replacement or tested unit exchange through ABC Industrial Parts provides the fastest path to restoring system operation.
Technical Specifications
| Manufacturer | Lenze |
| Part Number | LENZE-8301 (8301 / EVF8301-E) |
| Component Type | Frequency Inverter |
| Product Family | Lenze 8300 |
| Rated Power (kW) | 0.37 kW |
| Rated Power (HP) | 0.5 HP |
| Supply Voltage | 230 V AC (1-phase) |
| Supply Voltage Range | 180 - 264 V AC |
| Output Voltage Range | 0 - 230 V AC (3-phase) |
| Continuous Output Current | 2.4 A |
| Maximum Overload Current (60s) | 3.6 A (150%) |
| Output Frequency Range | 0 - 480 Hz |
| Control Method | Linear or Quadratic V/f Characteristic Control |
| Protection Rating | IP20 |
Programming and Configuration
Configuring the Lenze 8301 inverter involves adjusting drive parameters to match the connected 3-phase asynchronous motor and operating requirements. Key settings include choosing between linear V/f characteristics for constant-torque loads or quadratic V/f characteristics for centrifugal fans and pumps. Acceleration and deceleration ramps, frequency setpoint scaling, and terminal assignment functions are fully adjustable.
Parameter entry can be performed directly at the drive using the optional Lenze 8371 plug-in operating module keypad. Alternatively, system parameters can be commissioned and archived using Global Drive Control (GDC) PC software connected through a LECOM RS232 or RS485 communication module (2102). Parameter sets saved on the 8371 keypad can be copied across multiple 8300 series drives for rapid cloning during spare part installation.
Communication and System Integration
The Lenze 8301 features an interface slot that accepts plug-in communication options, enabling integration into broader automation architectures. Adding a LECOM module (such as the 2102 RS232 or RS485 adapter) allows the drive to exchange setpoints, commands, and diagnostic data with host controllers or computer interfaces.
In addition to serial bus expansion, physical terminal integration provides control options via hardwired signals. Multi-function digital inputs handle Start/Stop, Direction, and JOG commands, while flexible analog inputs accept 0–10 V voltage setpoints or 0/4–20 mA current loops. An integrated programmable changeover relay provides potential-free fault signaling directly to external control systems or safety circuits.
Diagnostics and Status Indication
Visual status indication on the front panel allows immediate assessment of drive operating states. Dedicated LED indicators signal mains power readiness and fault conditions, providing quick initial troubleshooting guidance at the cabinet level.
When detailed fault analysis is required, the drive outputs alphanumeric TRIP codes to the optional 8371 plug-in display module. Real-time telemetry, terminal output states, and parameter monitoring are also accessible via Global Drive Control (GDC) software when connected over a LECOM interface.
Status LED Indicators
| LED | Color/Status | Meaning |
|---|---|---|
| Ready (Green) | Green - Solid | Mains supply connected, inverter ready for operation / drive enabled |
| Trip / Fault (Red) | Red - Solid | Drive fault active, output disabled. Red light signals active TRIP condition. |
Replacement and Spare Part Considerations
When replacing an existing Lenze 8301 (or variants such as EVF8301-E, 8301-E, 8301-S), confirm that the power rating (0.37 kW / 0.5 HP) and 230 V single-phase input specifications match your existing drive configuration. Physical mounting uses an IP20 footprint suitable for standard enclosure backplates.
To transfer operational configuration to a new drive, use the plug-in 8371 keypad module to upload parameters from the donor unit and download them to the replacement. Alternatively, parameters can be backed up and restored using Global Drive Control (GDC) software via LECOM adapters. If upgrading control technology across a line retrofit, the Lenze i510 Cabinet Inverter serves as the recommended modern successor.
Error Codes & Fault Codes
The following error codes may be displayed during operation or diagnostics:
| Code | Name | Description | Possible Cause | Recommended Action |
|---|---|---|---|---|
| OC1 | Overcurrent during acceleration | Output current limit exceeded during acceleration phase. | Acceleration time too short, motor cable short circuit, motor grounded, motor power too large for inverter. | Increase acceleration time, check motor wiring and insulation, verify motor power rating. |
| OC2 | Overcurrent during deceleration | Output current limit exceeded during deceleration phase. | Deceleration time too short, mechanical load blockage. | Increase deceleration time, check mechanical braking / load. |
| OC3 | Overcurrent at constant speed | Output current limit exceeded during steady-state operation. | Sudden load surge, short circuit, mechanical jamming. | Check mechanical load system, verify motor and cabling. |
| OC4 | Motor earth fault | Ground fault detected on motor output phases. | Earth fault in motor cable or motor windings. | Check motor and output cabling for insulation damage and earth fault. |
| OU | DC bus overvoltage | DC bus voltage exceeds maximum threshold. | Excessive regenerative energy from motor during deceleration, deceleration time too short, mains supply voltage too high. | Extend deceleration ramp time, install braking resistor / module, check mains supply voltage. |
| LU | DC bus undervoltage | DC bus voltage dropped below minimum operating limit. | Mains supply failure, supply voltage too low, temporary power interruption. | Check mains voltage supply, check supply fuses and wiring. |
| OH | Inverter overtemperature | Heatsink temperature exceeds maximum allowed threshold. | Ambient temperature too high, cooling fans restricted, heat sink clogged with dirt. | Clean heatsink, improve cabinet ventilation and cooling, check ambient temperature. |
| OH4 | Motor overtemperature | Motor thermistor / PTC sensor tripped. | Motor thermal overload, continuous low-speed operation without forced cooling, thermistor open circuit. | Allow motor to cool down, check motor load, verify motor fan cooling, check PTC sensor wiring. |
| OL | Inverter overload | Inverter operating above continuous rated current (I x t integration limit reached). | Continuous mechanical overload on motor, improper V/f curve setting. | Reduce mechanical load, verify motor current against drive rating. |
| CE0 | Communication fault | Communication interruption between inverter and LECOM module / host system. | Loose cable connection, serial transmission timeout, EMC interference. | Check serial connection cable, check shield grounding, verify baud rate and address settings. |
| EE | Internal memory fault / EEPROM error | EEPROM memory read/write error on control board. | Internal hardware failure, corrupted EEPROM chip. | Internal board hardware fault — reset parameter settings to factory default. If error persists, return unit for repair or replace inverter. |
| Pr | Parameter transfer error | Error occurred during parameter copy process between operating module and drive. | Operating module disconnected during transfer, incompatible parameter set. | Retry parameter transfer, check operating module connection. |
| LP | Mains phase failure | Missing input phase detected on mains supply input. | Phase loss on mains supply line, blown line fuse. | Check incoming supply voltage on all phases and input fuses. |
Frequently Asked Questions
How do I transfer parameters from a failed Lenze 8301 to a spare drive?
Parameter settings can be transferred by attaching an optional 8371 keypad module to copy the parameter set from the original drive and download it into the replacement unit. Alternatively, Global Drive Control (GDC) software can transfer parameters over a LECOM RS232 or RS485 communication adapter.
What power supply is required to operate the Lenze 8301 frequency inverter?
The Lenze 8301 operates from a single-phase 230 V AC supply line (operating range 180 to 264 V AC) and delivers variable 3-phase AC output up to 230 V for driving standard 3-phase asynchronous motors.
What do the green and red LEDs on the front panel mean?
A solid green LED indicates that the mains supply voltage is connected and the drive is ready or enabled. A solid red LED signals an active TRIP fault condition, during which output to the motor is disabled.
What causes an EE fault code and how is it resolved?
An EE fault code indicates an internal EEPROM memory read/write error on the control board. The initial step is to reset parameters to factory defaults. If the fault recurs, internal hardware failure is indicated and unit repair or replacement is required.
Is there a recommended modern successor for retrofitting the Lenze 8301?
Yes, the Lenze i510 Cabinet Inverter is recommended as a modern retrofit successor for planned control cabinet upgrades.
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