Lenze E82EV752_4C 8200 Vector Frequency Inverter 7.5kW
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Product Information
The Lenze E82EV752_4C is a 7.5 kW AC frequency inverter belonging to the 8200 Vector series. Operating on a three-phase mains supply from 320 V to 550 V AC, this drive supplies a continuous output current of 16.5 A and a peak current of 24.8 A, supporting a 150% overload capacity for up to 60 seconds. The drive provides control over output frequencies ranging from 0 to 480 Hz at an 8 kHz switching frequency, utilizing control methods such as V/f characteristic control, open-loop VFC vector control, and closed-loop vector control for precise speed and torque regulation across motor applications.
Commissioning or replacing a drive within the Lenze 8200 Vector series relies on matching the modular options installed on the power unit. The inverter incorporates slot positions for interchangeable function modules, including standard I/O module E82ZAFSC, application I/O module E82ZAFAC, Keypad XT E82ZBC, and fieldbus cards for PROFIBUS DP (E82ZAFDP), CANopen (E82ZAFPC), DeviceNet, INTERBUS, and AS-Interface. Setup and parameter restoration are simplified by the removable E82ZMS EEPROM memory module, which enables direct parameter cloning across units without requiring external software tools. Technical assistance from ABC Industrial Parts can help ensure correct parameter transfer and configuration backup when integrating a spare module.
Status evaluation is visible via front-facing LEDs, featuring a green DRIVE READY light and a red DRIVE FAULT light, alongside diagnostic access through the Keypad XT module or Lenze Global Drive Control (GDC) PC software. Critical faults such as EEPROM corruption (EER) or internal board failures (H05) indicate hardware-level issues that cannot be serviced in the field. When internal faults occur, replacing the drive or utilizing test-verified repair services from ABC Industrial Parts offers the most efficient solution to restore machine uptime.
Technical Specifications
| Manufacturer | Lenze |
| Part Number | E82EV752_4C |
| Model / Type | 8200 Vector E82EV752_4C |
| Component Type | Frequency Inverter |
| Product Family | 8200 Vector |
| Rated Power | 7.5 kW |
| Supply Voltage Range | 320 V AC – 550 V AC (3-phase) |
| Rated Output Current | 16.5 A |
| Maximum Output Current (Peak) | 24.8 A (150% overload for 60s) |
| Output Frequency Range | 0 Hz – 480 Hz |
| Switching Frequency | 8 kHz |
| Control Method | V/f, VFC open-loop, VFC closed-loop vector control |
Programming and Configuration
The Lenze E82EV752_4C frequency inverter supports parameterization and configuration using either hardware keypads, software interfaces, or removable memory hardware. The optional Keypad XT E82ZBC mounts to the front panel, providing access to parameter structures such as current fault monitors (C0161) and fault history buffers (C0168). For comprehensive visual setup and monitoring, Lenze Global Drive Control (GDC) software connects directly to the drive, permitting offline parameter drafting, online real-time tuning, and full configuration backup.
A central feature of the 8200 Vector configuration system is the plug-in E82ZMS EEPROM memory module. This EEPROM chip stores up to four complete parameter sets, including motor data, acceleration ramps, current limits, and fieldbus addresses. During unit replacement, the memory module can be detached from the failed drive and inserted into the replacement inverter, allowing parameter restoration without requiring laptop connections or programming tools.
Communication and System Integration
The modular architecture of the Lenze E82EV752_4C enables system integration across multiple fieldbus platforms. Slot positions on the inverter accept specialized fieldbus communication modules, allowing the unit to integrate into centralized PLC architectures without requiring extra signal converters. Supported communication modules include PROFIBUS DP (E82ZAFDP), CANopen (E82ZAFPC), DeviceNet, INTERBUS, and AS-Interface.
In addition to fieldbus cards, the drive interfaces with modular I/O expansion boards such as the Lenze Standard I/O Module E82ZAFSC and Application I/O Module E82ZAFAC. These plug-in cards supply digital and analog inputs and outputs for control wiring, speed reference signals, and configurable relay outputs dedicated to TRIP signal indication.
Diagnostics and Status Indication
The front panel of the Lenze E82EV752_4C features LED diagnostic indicators for real-time drive condition checks. The green DRIVE READY LED signals drive power status, controller inhibit, active operation, or parameter transfer modes. The red DRIVE FAULT LED indicates active fault trips or warnings. Detailed fault diagnostics can be retrieved through parameter C0161 on the Keypad XT module or monitored remotely using Lenze Global Drive Control (GDC) software.
Status LED Indicators
| LED | Color/Status | Meaning |
|---|---|---|
| DRIVE READY | Green - Solid / Flashing / Off | Off: Supply voltage missing, controller disabled, or internal failure. Blinking slowly (1 Hz): Controller inhibit active (CINH / IMP). Solid on: Drive operational and active. Blinking fast (2 Hz): Special mode active or parameter transfer. |
| DRIVE FAULT | Red - Solid / Flashing / Off | Off: Normal operation / no fault. Solid on: Active fault trip (TRIP condition). Blinking: Warning active. |
Replacement and Spare Part Considerations
When replacing an installed Lenze E82EV752_4C inverter, verify that the replacement unit matches the required power rating of 7.5 kW and output current capacity of 16.5 A. Because the power unit relies on modular accessories, all plug-in function modules—such as standard or application I/O boards and fieldbus interfaces like PROFIBUS DP or CANopen—must be transferred from the original unit to the replacement inverter to preserve existing field wiring and network integration.
Parameter migration can be accomplished tool-free by swapping the E82ZMS EEPROM memory module from the original drive into the replacement inverter. If the existing memory module is unavailable or parameter corruption occurs (indicated by fault code P12), factory defaults must be reloaded via parameter C0002 before downloading a verified backup parameter set. For internal board failures represented by hardware fault codes EER or H05, field repair is not viable, requiring complete drive replacement or professional repair services.
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 | Instantaneous overcurrent detection / short circuit on output terminals U, V, W or earth fault. | Short circuit in motor cable or motor windings; earth fault; acceleration ramp too short. | Check motor cable and motor windings for short circuit or ground connection; increase acceleration time; check motor size against drive output rating. |
| OC2 | Earth fault | Ground fault / earth current detected on output phase. | Ground fault in motor leads or motor winding; excessive cable capacitance. | Check motor and field cabling insulation with megohmmeter; shorten motor cable or install output filter. |
| OC5 | I x t Overload | Drive overload during acceleration or continuous operation. | Excessive mechanical load; motor undersized; acceleration profile too steep. | Reduce motor load; extend acceleration time; check drive current limit configuration. |
| OU | Overvoltage in DC bus | DC bus voltage exceeded upper threshold level (>770 V DC). | Regenerative motor braking; deceleration time too short; mains input voltage too high. | Extend deceleration time; install braking module / brake resistor; verify mains supply voltage. |
| LU | Undervoltage in DC bus | DC bus voltage fell below lower threshold level. | Mains supply failure; phase loss; mains input voltage too low. | Check mains power supply lines, fuses, and power connections. |
| OH | Heatsink overheat | Inverter heatsink temperature exceeds maximum allowed limit (>85°C). | Inadequate cooling airflow; fan defect; ambient temperature too high; dirty heat sink fins. | Clean heatsink cooling fins; verify cooling fan operation; improve cabinet ventilation. |
| OH4 | Motor thermal overload | Motor temperature sensor (PTC / thermal contact) triggered overload fault. | Motor overloaded; insufficient motor cooling at low speeds; PTC open circuit. | Allow motor to cool; check mechanical load; verify motor PTC/thermal contact connection. |
| LP1 | Mains phase failure | Phase unbalance or phase failure detected on 3-phase input line. | One supply phase missing or severely unbalanced. | Check supply fuses, wiring, and main contactor. |
| CE0 | Communication error module slot | Communication failure between control unit and installed function module. | Module not seated properly or defective function module. | Power off and re-seat function module; replace function module if error persists. |
| CE1 | Fieldbus communication error | Communication time-out / connection loss on fieldbus interface. | Fieldbus cable disconnected; master PLC stopped; baud rate mismatch. | Check bus cable wiring, shielding, termination resistors, and fieldbus master status. |
| P12 | Parameter set error | Inconsistent or corrupted parameter set loaded in memory. | Power interruption during parameter save; incorrect memory module. | Reload factory default parameter set (C0002) and reconfigure or transfer valid parameter set. |
| EER | EEPROM internal error | Internal EEPROM memory read/write error. | Internal memory corrupt or hardware failure. | Internal hardware fault — execute reset/factory load; if problem persists, return unit for repair or replace inverter. |
| H05 | Internal hardware fault | Internal control hardware failure detected during self-test. | Control board component fault. | Internal board failure — field repair not possible; replace inverter or return unit for repair. |
| NMAX | Maximum speed exceeded | Actual motor speed exceeded configured maximum speed limit (C0011). | Incorrect feedback wiring; overhauling load; improper control loop tuning. | Check encoder feedback signals; tune speed controller; verify load behavior. |
Frequently Asked Questions
How do I transfer parameters to a replacement Lenze E82EV752_4C drive?
Parameter transfer can be completed tool-free by removing the E82ZMS EEPROM memory module from the original inverter and plugging it directly into the replacement drive. Alternatively, parameter sets can be loaded using the optional Keypad XT E82ZBC or Lenze Global Drive Control (GDC) software.
What fieldbus communication protocols are supported by the E82EV752_4C?
The inverter supports communication integration through optional plug-in modules, including PROFIBUS DP (E82ZAFDP), CANopen (E82ZAFPC), DeviceNet, INTERBUS, and AS-Interface.
What causes an OU fault code on the Lenze 8200 Vector inverter?
An OU fault code indicates DC bus overvoltage exceeding 770 V DC. This is typically caused by regenerative motor braking during fast deceleration, a deceleration time that is set too short, or excessively high mains supply voltage.
What action should be taken if fault code H05 or EER appears?
Fault codes H05 (internal hardware fault) and EER (EEPROM internal error) indicate hardware-level failures on the internal control board. These issues cannot be serviced in the field and require restoring factory settings (C0002), executing a drive reset, or sending the drive for repair or complete replacement.
What do the status LEDs on the front panel of the E82EV752_4C indicate?
The green DRIVE READY LED indicates power availability, controller inhibit state (slow flash), active operation (solid on), or parameter transfer (fast flash). The red DRIVE FAULT LED indicates standard operation when off, an active warning when flashing, or a fault trip condition when solid on.
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