Lenze EVF8241-E 8200 Series AC Frequency Inverter 0.37 kW / 0.5 HP
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Product Information
The Lenze EVF8241-E is a compact AC frequency inverter from the 8200 Series, engineered for precise speed and torque regulation of three-phase motors up to 0.37 kW (0.5 HP). Designed to operate across a broad 3-phase supply voltage range from 320 V AC to 550 V AC, this inverter supplies a continuous output current of 1.5 A at 480 V AC with an adjustable output frequency spanning 0 Hz to 480 Hz. It provides dynamic acceleration and overload capacity, supporting a maximum output current of 2.25 A (150% overload) for up to 60 seconds. The drive generates a low thermal power loss of 35 W at an 8 kHz switching frequency, making it a reliable motor control unit for applications in conveying, packaging, material handling, food and beverage processing, and textile manufacturing.
Integrating a replacement drive into an existing control cabinet requires aligning interface modules and parameter configurations. The EVF8241-E features a modular expansion slot that accepts pluggable communication modules, including CANopen, PROFIBUS-DP, INTERBUS, and LECOM RS-232/RS-485 interfaces. Local control terminals provide four HTL digital inputs, one configurable analog input (0–10 V or 0/4–20 mA), one analog output, and a status relay output. A spare unit cannot operate straight out of the box without transferring machine parameters. The internal EEPROM stores up to four switchable parameter sets for multi-mode operation, which can be quickly extracted and restored using a Lenze Keypad XT (EMZ2101IB), Standard Keypad (EMZ2010IB), or Lenze Global Drive Control (GDC) software. Technical assistance from ABC Industrial Parts can help ensure smooth parameter extraction and transfer when preparing a replacement drive.
System status monitoring and fault identification are facilitated through onboard visual indicators and diagnostic tools. A steady green LED indicates active inverter operation with enabled output, while a flashing green LED signifies a ready or controller inhibit state. A solid red LED indicates an active TRIP state, triggered by conditions such as overvoltage (OU), undervoltage (LU), short circuit or earth fault (OC1), or heatsink overtemperature (OH). Routine troubleshooting should start by verifying main supply lines, inspecting output wiring, and ensuring proper cooling airflow across the heatsink fins. If an immediate trip code like OC1 occurs upon power-up without a motor connected, or if non-volatile memory error codes EE1 or EEr recur after resetting, an internal power stage or board hardware failure is present. In such cases, component repair or a fully tested exchange unit from ABC Industrial Parts offers a dependable path to resume production.
Technical Specifications
| Manufacturer | Lenze |
| Part Number | EVF8241-E |
| Model / Type | EVF8241-E |
| Product Family | 8200 Series |
| Component Type | AC Frequency Inverter |
| Supply Voltage Range | 320 – 550 V AC (3-phase) |
| Nominal Output Voltage | 480 V AC |
| Rated Output Current | 1.5 A |
| Maximum Overload Current | 2.25 A (150% for 60 seconds) |
| Rated Power Output (kW) | 0.37 kW |
| Rated Power Output (HP) | 0.5 HP |
| Output Frequency Range | 0 – 480 Hz |
| Switching Frequency | 8 kHz |
| Thermal Power Loss | 35 W |
| Digital Inputs | 4 (HTL) |
| Analog Inputs | 1 (Configurable 0-10V, 0/4-20mA) |
| Analog Outputs | 1 |
| Relay Outputs | 1 |
Programming and Configuration
The Lenze EVF8241-E inverter incorporates non-volatile internal EEPROM memory to manage drive operational profile settings. A key feature of the drive architecture is support for four independent, switchable parameter sets stored directly on the internal memory chip. This capability allows a single inverter to control multi-mode machine sequences, distinct speed profiles, or alternate operating recipes without reloading external software.
Parameter management and drive commissioning can be performed using either optional pluggable keypads or Lenze Global Drive Control (GDC) PC software. Operators can utilize the Lenze Keypad XT (EMZ2101IB) or Standard Keypad (EMZ2010IB) to access parameter menus, perform diagnostics, and save baseline parameter files. When connecting via a PC using GDC software over a LECOM RS-232/RS-485 module (EMF2102IB) or CAN interface, maintenance engineers can archive, edit, and upload complete parameter sets for rapid field cloning.
When replacing an installed EVF8241-E unit, cloning saved parameters from the original drive is essential to replicate precise acceleration ramps, current limits, and I/O terminal assignments. EEPROM data backup ensures parameter settings are retained permanently even during prolonged power interruptions.
Communication and System Integration
The modular architecture of the Lenze 8200 Series allows the EVF8241-E to integrate flexibly into distributed industrial automation networks. The drive features a dedicated pluggable expansion slot on its front fascia designed to receive optional fieldbus communication and interface modules without requiring additional external wiring or power supplies.
Available networking options include CANopen modules (EMF2178IB and EMF2173IB), a PROFIBUS-DP module (EMF2133IB), INTERBUS modules, and LECOM serial communication interfaces (EMF2102IB for RS-232/RS-485). Installing these optional modules enables higher-level PLCs to control drive run/stop commands, set speed references, and monitor live drive diagnostics over fieldbus networks.
For direct physical control, the EVF8241-E includes built-in terminal blocks offering four HTL digital inputs, one configurable analog input (0–10 V, 0–20 mA, or 4–20 mA), one analog output, and one relay output contact for fault or status signaling. This balance of hardwired I/O and optional fieldbus modules supports flexible integration into existing machine control topologies.
Diagnostics and Status Indication
The Lenze EVF8241-E provides localized status feedback and comprehensive fault reporting to simplify maintenance monitoring. Two high-visibility LEDs located on the front of the unit give immediate status indication: a green LED displays operational readiness or active inverter state, while a red LED illuminates continuously when the drive enters a TRIP fault state.
Detailed fault codes can be read by attaching an optional Keypad XT (EMZ2101IB) or Standard Keypad (EMZ2010IB). Alternatively, real-time diagnostic monitoring, status word interrogation, and trip history analysis can be performed over fieldbus networks or via Lenze Global Drive Control (GDC) PC software.
Status LED Indicators
| LED | Color/Status | Meaning |
|---|---|---|
| Red LED | Red - Solid | Fault active (Drive TRIP state). Indicates shutdown due to overvoltage, undervoltage, overcurrent, motor overload, or internal board error. |
| Green LED | Green - Solid / Flashing | Flashing indicates ready / controller inhibit; steady illumination indicates inverter active and output enabled. |
Replacement and Spare Part Considerations
When replacing an existing Lenze EVF8241-E AC drive in an active production environment, exact model matching is critical to ensure electrical and mechanical compatibility. Verify that the replacement unit carries the matching part number EVF8241-E and confirms to the 0.37 kW (0.5 HP), 1.5 A rating operated on a 320 to 550 V AC supply.
Installing a new or replacement drive involves transferring all configuration parameters from the failed unit. Parameter extraction can be performed via the optional Keypad XT (EMZ2101IB) or via Lenze Global Drive Control (GDC) software over a LECOM or CAN connection. If the original parameters were backed up to a file, they can be directly uploaded to the new unit. If the original parameters cannot be read due to severe internal damage, the replacement unit must be manually programmed with motor parameters, ramp times, and I/O terminal assignments.
Before applying mains voltage, ensure all plug-in communication modules (such as CANopen EMF2178IB/EMF2173IB or PROFIBUS-DP EMF2133IB) are securely fitted into the expansion slot and that fieldbus node switches or baud rate settings match network requirements. Additionally, check that motor connections, terminal T1/T2 thermal sensor connections, and power cabling are firmly anchored.
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 | Excessive peak output current detected due to short circuit or ground fault. | Short circuit on output terminals, earth fault in motor wiring, damaged motor winding, or internal inverter short circuit. | Inspect motor cabling and earth resistance; check motor windings. If code occurs immediately upon power up without motor connected, internal power stage failure is present and unit requires return for repair. |
| OC2 | Overcurrent during acceleration | Output current exceeded trip limit during motor acceleration. | Acceleration ramp time set too short, motor mechanical overload, or incorrect motor parameter settings. | Increase acceleration time ramp; check mechanical load for jamming; verify motor voltage/frequency settings. |
| OC5 | Overcurrent during operation | Sudden current peak during constant-speed operation. | Abrupt load surge, mechanical block, or severe line supply disturbance. | Inspect driven machine for mechanical blockages; check application load dynamics. |
| OU | DC bus overvoltage | DC link voltage exceeded upper safety threshold (>770 V DC). | Excessive regenerative energy during deceleration, deceleration ramp time too short, or missing/defective braking resistor. | Increase deceleration ramp time; connect braking module or resistor; check supply mains voltage. |
| LU | DC bus undervoltage | DC link voltage fell below minimum operation limit. | Mains supply failure, phase loss on AC input, or supply voltage drop under load. | Check input AC supply lines, input fuses, and line contactor. |
| OH | Heatsink overtemperature | Inverter power section temperature exceeded safety limit (>85°C). | Inadequate control cabinet ventilation, clogged heatsink fins, cooling fan failure, or ambient temperature too high. | Clean heatsink cooling fins, check cabinet ventilation, verify cooling fan operation, and lower ambient temperature. |
| OH4 | Motor overtemperature | Motor protection sensor (PTC/TK) on terminals T1/T2 triggered. | Motor thermal overload, insufficient motor cooling, or broken sensor wire. | Allow motor to cool down, check mechanical load, verify external motor cooling fan, and check PTC sensor connections. |
| It1 | I x t overload | Continuous current overload exceeded drive thermal capacity over time. | Inverter operating continuously above rated output current, incorrect motor data programmed. | Reduce motor load; verify application sizing and drive rated output current. |
| CE0 | Communication error | Communication failure between control card and pluggable module or fieldbus. | Loose module attachment, bus cable disconnect, incorrect fieldbus baud rate or node address. | Verify fieldbus module connection, check bus wiring, termination resistors, and fieldbus master status. |
| EE1 | EEPROM write error | Internal non-volatile parameter memory write fault. | Power cycle while saving parameters or internal memory microchip hardware failure. | Restore factory default parameters and re-download parameter set. If fault persists, internal board failure requiring unit replacement. |
| EEr | EEPROM read error | Corrupted parameter data read from internal non-volatile memory at startup. | Internal hardware failure or corrupted memory sector. | Reset parameters to factory default. If error recurs upon power cycle, internal board hardware fault — replace the unit. |
Frequently Asked Questions
What software is required to configure the Lenze EVF8241-E inverter?
The EVF8241-E can be configured using Lenze Global Drive Control (GDC) software on a PC connected via a LECOM RS-232/RS-485 module (EMF2102IB) or CAN interface. Alternatively, it can be programmed directly without a PC using a pluggable Keypad XT (EMZ2101IB) or Standard Keypad (EMZ2010IB).
How are parameter sets backed up and transferred when replacing an EVF8241-E drive?
Parameters stored in the internal EEPROM can be saved to a Keypad XT or copied using GDC PC software. When installing a replacement EVF8241-E, the saved parameter profile can be uploaded directly to restore original acceleration ramps, I/O settings, and motor limits.
What fieldbus communication options are supported on the Lenze EVF8241-E?
The EVF8241-E includes a front expansion slot that supports plug-in fieldbus modules including CANopen (EMF2178IB / EMF2173IB), PROFIBUS-DP (EMF2133IB), INTERBUS, and LECOM serial RS-232/RS-485 (EMF2102IB).
What does a solid red status LED indicate on the EVF8241-E drive?
A solid red LED indicates an active drive TRIP fault, causing the inverter output to shut down. Common triggers include DC bus overvoltage (OU), undervoltage (LU), short circuit/earth fault (OC1), heatsink overtemperature (OH), or memory write/read errors (EE1/EEr).
What should be checked if the drive displays an OC1 fault immediately upon powering up?
Disconnect the motor cables from the drive terminals and power up again. If the OC1 short circuit code persists with no motor connected, the internal power stage inverter module has failed and requires unit replacement or professional repair.
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