Lenze E82EV751_4B 8200 Vector Frequency Inverter 0.75 kW
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Product Information
The Lenze E82EV751_4B (model type E82EV751K4B) is a 0.75 kW frequency inverter belonging to the 8200 Vector drive series, engineered for precise variable speed control of standard asynchronous AC motors. Operating across a 3-phase mains supply voltage range of 320 V to 550 V AC, this compact IP20 panel-mountable drive delivers a continuous output current of 2.4 A with a peak overload capacity of 3.6 A (150%) for up to 60 seconds. Featuring an 8 kHz switching frequency and low internal thermal dissipation of 40 W, the unit supports V/f characteristic control, sensorless vector control, and open-loop torque control across an output frequency range of 0 to 480 Hz. Dedicated motor protection is integrated directly via thermal PTC thermistor connection terminals T1 and T2.
Integrating a replacement drive into an operational machine requires proper physical module alignment and parameter configuration. The modular architecture of the 8200 Vector series separates the main power section from control options, enabling direct installation of optional communication modules such as the CANopen module (E82ZAFCC) or PROFIBUS module (E82ZAFPC), alongside standard I/O function modules. Drive commissioning involves loading parameters across the unit's four internal parameter sets using either the pluggable Keypad XT (E82ZBC) interface or Lenze Global Drive Control (GDC) PC software. When restoring machine operation from a failed drive, ABC Industrial Parts provides assistance with replacement unit preparation and parameter extraction from donor or failing hardware.
Real-time monitoring and field troubleshooting rely on three front-panel status LEDs and structured diagnostic parameter menus. System operational state is signaled via the green LED for normal operation or impulse inhibit, the yellow LED for warning thresholds, and the red TRIP LED for fault conditions requiring a reset. Active fault codes are stored in parameter C0183, while parameter C0168 maintains a timestamped history log of the four most recent error events. Common field trips such as OC1 overcurrent, OU DC-bus overvoltage, or LU undervoltage can usually be addressed by inspecting motor wiring, supply fuses, and deceleration ramp timing. Internal electronics or memory failures such as EE08 or H05 indicate non-serviceable internal board issues, where securing a tested replacement unit or utilizing repair services from ABC Industrial Parts offers the most direct path to minimize line downtime.
Technical Specifications
| Manufacturer | Lenze |
| Part Number | E82EV751_4B |
| Model / Type | E82EV751K4B |
| Product Family | 8200 Vector |
| Component Type | Frequency Inverter |
| Rated Power | 0.75 kW |
| Supply Voltage Range | 320 V - 550 V AC (3-Phase) |
| Continuous Output Current | 2.4 A |
| Maximum Output Current (60s) | 3.6 A |
| Mains Input Current (Without Choke) | 3.3 A |
| Mains Input Current (With Choke) | 2.2 A |
| Output Frequency Range | 0 Hz - 480 Hz |
| Switching Frequency | 8 kHz |
| Power Dissipation | 40 W |
| Control Method | V/f characteristic control, sensorless vector control, torque control |
| IP Rating | IP20 |
| Mounting Type | Panel mounting / cabinet installation |
Programming and Configuration
Parameter management on the Lenze E82EV751_4B inverter is conducted using either the pluggable Keypad XT (E82ZBC) or Lenze Global Drive Control (GDC) engineering software via a connected PC interface. The inverter contains four internal parameter sets, allowing engineers to store alternate machine configurations or process profiles directly within the drive hardware. Key setup parameters govern crucial motor dynamics, including acceleration ramp time (parameter C0012), deceleration ramp time (parameter C0013), and thermal motor monitoring thresholds (parameters C0075 and C0076).
When swapping out an old or damaged unit, parameter backup files can be downloaded from GDC software or saved directly onto the Keypad XT memory module. Re-commissioning a new spare involves snapping the pre-programmed Keypad XT onto the fresh power unit or performing a direct parameter download via GDC. If corruption occurs during initialization, memory parameters can be reset to factory default values before re-uploading the operational parameter profile.
Communication and System Integration
The 8200 Vector series features a modular physical interface architecture that decouples the primary power section from fieldbus networking interfaces. Communication options attach directly to the front slot of the base unit, enabling seamless system integration into existing fieldbus architectures without requiring changes to the main drive wiring.
Supported fieldbus modules include the CANopen Function Module (E82ZAFCC) and the PROFIBUS Module (E82ZAFPC), alongside options for INTERBUS and DeviceNet protocols. The drive also supports internal CAN system bus networking for high-speed cross-communication between multiple Lenze drives. When replacing an inverter, the existing communication module can be unclipped from the donor drive and installed directly onto the replacement unit.
Diagnostics and Status Indication
The E82EV751_4B inverter features three LED status indicators located on the front panel to provide immediate operational feedback to maintenance personnel. Supplementary digital diagnostics are accessible through the Keypad XT display interface or via parameter monitoring in Global Drive Control (GDC) software.
Parameter C0183 provides real-time active fault code readouts, while parameter C0168 logs the four most recent fault events complete with operating time stamps for root-cause analysis. Diagnostic traces can also be captured in real time through GDC software to evaluate dynamic load conditions, voltage drops, or current spikes.
Status LED Indicators
| LED | Color/Status | Meaning |
|---|---|---|
| Red LED (TRIP / Fault indicator) | Red - Solid or Flashing | Flashes or lights solid when a fault condition occurs. Solid light indicates an active fault/trip requiring a reset. |
| Green LED (Operation / Ready indicator) | Green - Solid or Flashing | Lights solid during normal operation; flashes when impulse inhibit is active or drive is preparing for operation. |
| Yellow LED (Warning / Impulse inhibit) | Yellow - Solid or Flashing | Lights or flashes when warning limit is reached or impulse inhibit is active. |
Replacement and Spare Part Considerations
When replacing an E82EV751_4B inverter, ensure that both the main power unit part number and installed option modules match the original installation. Communication cards such as the CANopen (E82ZAFCC) or PROFIBUS (E82ZAFPC) modules, along with keypad interfaces like the Keypad XT (E82ZBC), are transferable to the replacement base unit.
The spare unit will not operate correctly until the original parameter backup is loaded onto its memory. Transfer parameters using the Keypad XT module or upload the configuration file via Global Drive Control (GDC) software. For modernizing equipment or complete machine overhauls, Lenze i510 and i550 series cabinet frequency inverters serve as recommended replacement series.
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 caused by short circuit at output or earth fault in motor/cable | Short circuit between motor phases; ground fault in motor or wiring; motor cable too long; acceleration time too short | Check motor and wiring for short circuit and insulation integrity; check cable length and shielding; increase acceleration time |
| OC2 | Overcurrent during acceleration | Drive current limit exceeded during acceleration phase | Acceleration time set too short; motor mechanically jammed or load inertia too high; incorrect motor data entered | Increase acceleration time (C0012); check mechanical drive train for stiffness; verify motor parameters |
| OC3 | Overcurrent during deceleration | Drive current limit exceeded during deceleration phase | Deceleration time set too short; braking energy too high | Increase deceleration time (C0013); fit optional brake chopper / brake resistor |
| OC5 | I x t overload (Inverter) | Thermal overload of frequency inverter power section due to continuous high current | Continuous operation above rated continuous output current; duty cycle too severe | Reduce drive load; check switching frequency setting; select larger inverter rating |
| OC6 | I²t overload (Motor) | Thermal overload calculation for motor exceeded allowed limit | Motor operated at low speed under high load for extended duration without external cooling | Check motor loading; verify I²t settings (C0075/C0076); use forced cooling motor fan |
| OU | Overvoltage in DC bus | DC bus voltage exceeds maximum allowed voltage limit | Excessive regenerative energy during deceleration; mains supply voltage too high | Increase deceleration time; install braking module/resistor; check mains voltage |
| LU | Undervoltage in DC bus | DC bus voltage dropped below minimum threshold limit | Mains supply failure; phase loss; input supply voltage too low; transient power drop | Check mains voltage; check supply wiring and fuses; verify line choke |
| OH | Heatsink overtemperature | Heatsink temperature exceeds maximum permitted limit | Insufficient cooling airflow; ambient temperature too high; fan defect or clogged cooling fins | Clean heatsink cooling fins; check control cabinet ventilation; reduce ambient temperature |
| OH3 | Motor thermal overload (PTC) | Motor temperature sensor connected to T1/T2 terminals triggered trip | Motor overheating due to overload or blocked cooling air flow | Allow motor to cool down; eliminate motor overload; check motor ventilation |
| OH4 | Inverter inside overtemperature | Internal air temperature inside inverter control board exceeds limit | Excessive cabinet temperature; fan failure | Improve cabinet cooling and airflow |
| EE08 | EEPROM memory fault | Internal EEPROM data corruption or reading error during startup | Internal memory corruption; hardware fault on control board | Re-initialize parameters to factory defaults; if error persists, internal hardware fault — return unit for repair |
| CE0 | Communication fault (Function module) | Communication failure between basic inverter unit and installed function module | Function module improperly seated or defective; loose connection | Check seating of option module; replace option module; replace main unit if persistent |
| CE1 | System bus (CAN) communication fault | Communication interruption or error on CAN system bus interface | Bus cable disconnected; incorrect bus termination; baud rate mismatch | Check CAN wiring, termination resistors, and node configuration settings |
| LP1 | Motor phase failure | Loss of single motor phase detected at output terminals | Motor cable disconnected or broken phase line; motor winding open | Check motor cables and connection terminal block; test motor resistance |
| P12 | Mains phase failure | Loss of input phase detected on 3-phase AC input supply | Blown supply fuse; phase loss in mains distribution | Check input fuses and mains voltage stability across all 3 phases |
| H05 | Internal hardware fault | Internal microprocessor or hardware defect detected during self-test | Internal board component breakdown | Internal hardware failure — replace unit or return to manufacturer service |
Frequently Asked Questions
What software is used to program the Lenze E82EV751_4B drive?
The drive is configured using Lenze Global Drive Control (GDC) PC software or configured directly using the pluggable Keypad XT (E82ZBC) module.
Can I transfer parameters to a replacement drive without a PC connection?
Yes, parameters saved onto a Keypad XT (E82ZBC) digital display module can be plugged into a replacement drive to transfer configuration profiles across all four parameter sets.
How do I clear an EE08 memory fault on startup?
An EE08 fault indicates EEPROM corruption. Re-initialize parameters back to factory defaults. If the fault persists after re-initialization, the drive has suffered an internal hardware fault and requires repair or replacement.
Which fieldbus modules can be used with the E82EV751_4B inverter?
The modular drive architecture supports CANopen (E82ZAFCC) and PROFIBUS (E82ZAFPC) modules, as well as INTERBUS and DeviceNet option modules.
What modern Lenze drive series is recommended to replace legacy 8200 Vector inverters?
Lenze i510 and i550 cabinet frequency inverters are recommended as replacement series for legacy 8200 Vector drives.
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