Lenze E82EV751_4C 8200 Vector Frequency Inverter 0.75kW
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Product Information
The Lenze E82EV751_4C is a 0.75 kW frequency inverter belonging to the 8200 Vector series, engineered to provide precise motor speed and torque regulation for three-phase AC motors. Designed for operational flexibility across packaging machinery, continuous conveyors, material handling, and processing equipment, this drive operates on a 3-phase supply voltage ranging from 320 V AC to 528 V AC with a 400 V AC nominal rating. It delivers a continuous output current of 2.4 A and a maximum peak current of 3.6 A, supported by a 150% overload capacity for 60 seconds to handle high-inertia startup conditions. Operating with linear or quadratic V/f characteristics, Sensorless Vector Control (SLVC), or torque control across an output frequency range of 0 to 480 Hz at an 8 kHz switching frequency, the inverter maintains motor performance without requiring external encoder feedback.
Integrating a replacement unit into an existing installation requires alignment of hardware options and stored operating parameters. The E82EV751_4C features a modular architecture equipped with dedicated Function Interface (FIF) and Automation Interface (AIF) expansion slots. Depending on the machine configuration, these slots accommodate plug-in options such as the Standard I/O Function Module (E82ZAFSC), Application I/O Module (E82ZAFAC), or fieldbus interfaces including CANopen (E82ZAFCC) and PROFIBUS-DP (E82ZAFPC). Because the drive stores drive parameters across up to four internal parameter sets in non-volatile EEPROM, a spare unit is not plug-and-play and must be configured with the application software project. Parameters can be copied using the Keypad XT (E82ZBC) or transferred via a computer running Lenze Global Drive Control (GDC) software. ABC Industrial Parts can assist in sourcing fully tested units and supporting parameter transfer to minimize system downtime.
Status indication and diagnostic monitoring are accessible through on-board LEDs, external keypad displays, or software interfaces. Normal operation and readiness are indicated by the green LED, which remains solid when the drive is running and blinks when the drive is ready or pulse inhibit is active. A continuous or flashing red LED signals an active fault trip or drive lockout. Technicians can interrogate the drive fault history log via parameters C0161 to C0168 using the Keypad XT or GDC software monitor. First-line checks should cover mains line supply, motor output wiring across U, V, and W terminals, and motor thermistor connections at terminals T1 and T2. While faults like acceleration overcurrent (OC1) or DC bus overvoltage (OU) often relate to ramp times or external mechanical loads, errors such as internal EEPROM failure (EER) or internal hardware fault (H05) point to internal board-level issues that are not field-serviceable. In such cases, obtaining a tested replacement or submitting the unit to ABC Industrial Parts for professional repair provides a clear path back to production.
Technical Specifications
| Manufacturer | Lenze |
| Part Number | E82EV751_4C |
| Model / Type | 8200 Vector |
| Component Type | Frequency Inverter |
| Product Family | 8200 Series |
| Rated Power | 0.75 kW |
| Supply Voltage Nominal | 400 V AC |
| Supply Voltage Range | 320 - 528 V AC |
| Rated Continuous Current | 2.4 A |
| Maximum Peak Output Current | 3.6 A |
| Output Voltage Range | 0 - 400 V AC |
| Output Frequency Range | 0 - 480 Hz |
| Switching Frequency | 8 kHz |
| Control Modes | V/f characteristic (linear/quadratic), Sensorless Vector Control (SLVC), Torque control |
| Overload Capacity | 150% for 60 seconds |
| Internal Memory | Integrated EEPROM (up to 4 parameter sets) |
Programming and Configuration
Parameterization of the Lenze E82EV751_4C frequency inverter is managed through the optional Keypad XT (E82ZBC) plug-in module or using Lenze Global Drive Control (GDC) engineering software connected via an Automation Interface module. The inverter incorporates internal EEPROM memory capable of holding up to four complete, independent parameter sets, enabling flexible machine operation or quick switching between operational profiles.
Commissioning a spare unit requires transferring saved parameter profiles from the original drive. Key drive settings include acceleration ramp time (C0012), deceleration ramp time (C0013), and control mode selections. In the event of system configuration errors or memory corruption, parameter C0002 allows the drive to be reset to factory default settings before reloading stored parameter data.
Communication and System Integration
The E82EV751_4C utilizes a modular architecture featuring two dedicated expansion slots: the Function Interface (FIF) slot and the Automation Interface (AIF) slot. The FIF slot typically receives standard or application-specific I/O modules, such as the E82ZAFSC standard I/O module or the E82ZAFAC application I/O module, providing control signal terminals, analog input connections, and motor PTC thermistor monitoring at terminals T1 and T2.
For direct integration into higher-level fieldbus networks, the AIF slot supports optional communication modules including CANopen (E82ZAFCC), PROFIBUS-DP (E82ZAFPC), and DeviceNet. Output terminals U, V, and W deliver 3-phase variable AC power (0 to 400 V AC) up to 480 Hz directly to the driven motor.
Diagnostics and Status Indication
The drive provides visual status indications directly through front-panel LEDs, complemented by detailed fault readouts using connected keypad or software tools. Status LEDs provide quick visual feedback on power, operational state, and fault conditions. Diagnostic readouts, live parameter monitoring, and historical fault memory logs covering parameters C0161 to C0168 are accessible through the Keypad XT module or Lenze Global Drive Control (GDC) software.
Status LED Indicators
| LED | Color/Status | Meaning |
|---|---|---|
| Red LED | Red - Continuous illumination or flashing | Fault or trip state active; indicates an active fault condition or drive lockout |
| Green LED | Green - Solid or blinking | Solid green indicates drive running; blinking green indicates drive ready or pulse inhibit |
Replacement and Spare Part Considerations
When replacing an existing Lenze E82EV751_4C inverter, verify that the replacement unit matches the part number, input voltage rating (320–528 V AC operating range, 400 V AC nominal), and output capacity (0.75 kW, 2.4 A continuous current). Any plug-in expansion modules attached to the FIF and AIF slots of the original drive—such as communication interfaces or I/O modules—must be unclipped and transferred to the replacement base unit.
Because parameters reside in the drive non-volatile EEPROM, installing a replacement unit requires restoring the original parameter file. Parameters can be uploaded and written using Lenze Global Drive Control (GDC) software or copied directly using the Keypad XT module. When retrofitting legacy installations, direct hardware replacements maintain existing cabinet layouts, while long-term migration strategies may involve transitioning to modern equivalents such as the Lenze i550 series.
Error Codes & Fault Codes
The following error codes may be displayed during operation or diagnostics:
| Code | Name | Description | Possible Cause | Recommended Action |
|---|---|---|---|---|
| OC1 | Overcurrent Acceleration | Short circuit or severe overcurrent condition detected during acceleration ramp. | Acceleration time too short; motor cable shorted; motor winding shorted to earth or phase-to-phase. | Check motor cable and winding insulation; increase acceleration time (C0012). |
| OC2 | Overcurrent Deceleration | Overcurrent condition detected during deceleration ramp. | Deceleration time too short; high mechanical inertia. | Increase deceleration time (C0013) or connect external brake resistor. |
| OC3 | Overcurrent Constant Speed | Overcurrent detected during steady-state constant speed operation. | Sudden load impulse; mechanical jam/blockage; short circuit. | Inspect mechanical load for binding or blockages; check motor cable insulation. |
| OC4 | Ground Fault / Earth Fault | Earth current detected on output terminals. | Motor cable ground fault; motor winding insulation failure. | Check motor and cable for insulation resistance to earth using a megohmmeter. |
| OC5 | Drive Overload (I x t) | Continuous overload threshold exceeded for excessive duration. | Drive undersized for load; prolonged high current operation. | Check mechanical load; check motor current against drive rated current. |
| OU | DC Bus Overvoltage | DC bus voltage exceeded upper threshold (approx. 770 V DC). | Regenerative energy from motor during deceleration; excessive input line voltage. | Extend deceleration time; install brake chopper / brake resistor; check supply mains voltage. |
| LU | DC Bus Undervoltage | DC bus voltage dropped below minimum threshold (approx. 400 V DC). | Mains supply voltage drop; mains phase failure; power line interruption. | Check mains voltage supply line and line fuses. |
| OH | Heat Sink Overtemperature | Heat sink temperature exceeded maximum permitted temperature limit. | Insufficient cooling airflow; ambient temperature too high; dirty heat sink fins; cooling fan failure. | Clean heat sink; improve panel ventilation; lower switching frequency. |
| OH4 | Motor Overtemperature | Motor thermal contact or PTC thermistor trip detected at terminals T1/T2. | Motor overloaded; insufficient motor cooling fan airflow; locked rotor. | Allow motor to cool down; check motor loading and ventilation. |
| OH7 | Heat Sink Sensor Fault | Internal temperature sensor signal invalid or disconnected. | Internal temperature sensor failure or circuit board fault. | Internal hardware fault — return unit for repair or service. |
| CE0 | Communication Fault AIF | Communication interruption between inverter mainboard and module in AIF slot. | Loose module connection; noise interference; defective communication module. | Re-seat communication module in AIF slot; check bus connections and shielding. |
| EER | EEPROM Memory Error | Checksum fault detected during EEPROM data read at power-up. | Internal memory corruption; power failure during write operation; micro-controller fault. | Reset drive to factory default settings (C0002). If error persists, internal hardware fault — return unit for repair. |
| LP1 | Mains Phase Failure | Failure of one phase on the AC mains supply lines. | Blown input line fuse; disconnected input supply phase line. | Check mains input wiring and input power fuses. |
| P13 | Motor Phase Failure | Failure of one motor phase connection detected at output terminals U, V, W. | Disconnected motor cable; motor contactor open; loose terminal screw. | Check motor output wiring and terminal connections. |
| H05 | Internal Hardware Fault | Internal power board or control board hardware failure detected. | Hardware component defect inside inverter. | Internal hardware fault — return unit for repair or replace inverter. |
Frequently Asked Questions
What software and accessories are used to program the Lenze E82EV751_4C?
The drive is programmed using Lenze Global Drive Control (GDC) software connected through an Automation Interface module, or adjusted directly at the unit using the Keypad XT (E82ZBC) module.
Is the Lenze E82EV751_4C frequency inverter plug-and-play?
No, a replacement drive requires parameter configuration. You must restore the stored parameter set to the EEPROM using Global Drive Control (GDC) software or Keypad XT, and move any installed FIF or AIF expansion modules to the new drive.
What do the status LEDs on the front panel indicate?
A solid green LED indicates the drive is running, while a blinking green LED signals ready or pulse inhibit. A solid or flashing red LED indicates an active fault condition or drive lockout.
What causes fault code OC1 and how is it addressed?
Fault OC1 indicates an overcurrent condition during acceleration. It is addressed by inspecting motor cabling and windings for short circuits and increasing the acceleration ramp time parameter C0012.
How should I handle fault code EER or H05?
Fault EER indicates an EEPROM checksum error, which can be reset using parameter C0002 to restore factory defaults before reloading parameters. Fault H05 indicates an internal hardware board failure. If EER persists after a reset or H05 is shown, internal component failure has occurred and the unit requires repair or complete replacement.
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