Lenze E82EV751_4B040 8200 VECTOR Frequency Inverter
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Product Information
The Lenze E82EV751_4B040 is a 0.75 kW frequency inverter from the 8200 Vector series, engineered for precise speed and torque control of three-phase AC induction motors in industrial automation systems. Operating on a 3-phase mains supply range of 320 V to 528 V AC (400 V / 480 V nominal), this compact IP20 cabinet-mount inverter delivers a continuous output current of 2.5 A with a rated mains current of 2.4 A at an 8 kHz default switching frequency. It provides advanced sensorless vector control alongside customizable linear or quadratic V/f operating modes, supporting output frequencies from 0 to 480 Hz. An integrated Class A radio interference suppression (RFI) filter reduces high-frequency electromagnetic noise inside control cabinets without requiring additional external filters.
Built around a modular architecture, the E82EV751_4B040 separates its power section from control and communication interface cards. Operation requires attaching a plug-in function module, such as Standard I/O or Application I/O, while option slots support fieldbus communication via CANopen (E82ZAFPC / E82ZAFPC010), PROFIBUS-DP (E82ZAFPC200), or LECOM protocols. Up to four complete parameter sets can be stored in the non-volatile internal EEPROM memory. Commissioning a replacement unit requires transferring the existing plug-in modules and uploading stored configuration parameters, which can be accomplished quickly using the Keypad XT (E82ZBC) cloning feature or Lenze Global Drive Control (GDC) software. Technical teams at ABC Industrial Parts can assist with parameter extraction and module selection when preparing a spare drive for installation.
Drive status and operating conditions are displayed directly through onboard status LEDs, where a green LED indicates operational readiness or running status and a red LED signals a fault condition or pulse inhibit. Detailed diagnostic monitoring and error code readouts are accessible via the Keypad XT display, GDC diagnostic software, or fieldbus status words. Common fault codes include OC1, OC2, and OC5 for overcurrent events, OU and LU for DC bus overvoltage or undervoltage, and OH, OH4, and OH7 for thermal trips. Standard first-line troubleshooting involves checking mains supply wiring, line fuses, motor cable insulation, and cooling fan operation. Unresolvable memory corruption or unserviceable gate drive failure indicates internal board-level faults, where an exchange unit or repair service from ABC Industrial Parts provides a fast route back to full production.
Technical Specifications
| Rated Power | 0.75 kW |
| Supply Voltage Range | 320 - 528 V AC |
| Rated Mains Current | 2.4 A |
| Continuous Output Current | 2.5 A |
| Output Voltage Range | 0 - 400 V AC |
| Output Frequency Range | 0 - 480 Hz |
| Switching Frequency | 8 kHz |
| Control Method | Sensorless Vector Control / V/f Characteristic |
| Enclosure Rating | IP20 |
| Integrated RFI Filter | Class A |
Programming and Configuration
The Lenze E82EV751_4B040 frequency inverter relies on non-volatile internal EEPROM memory capable of holding up to four independent parameter sets. Drive configuration and parameter adjustments can be performed through the optional plug-in Keypad XT (E82ZBC) operator module or via PC software using Lenze Global Drive Control (GDC). The GDC software tool allows engineers to edit motor control parameters, set acceleration and deceleration ramps, configure I/O mappings, and maintain offline parameter backups.
When replacing an inverter in existing machinery, parameter sets must be transferred to the replacement unit to match machine kinematics and control logic. The Keypad XT allows direct parameter cloning without connecting a PC, enabling fast field swap-outs. If parameter corruption occurs during operation, parameter code C0002 can be executed to restore default factory settings prior to re-commissioning.
Communication and System Integration
Designed with flexible system integration in mind, the E82EV751_4B040 features a modular interface concept that separates the base inverter power section from control terminals and fieldbus interfaces. Terminal control requires inserting a plug-in function module, such as Standard I/O or Application I/O modules, into the dedicated front interface slot.
For fieldbus networking and central PLC integration, the inverter accepts optional communication cards into its dedicated fieldbus slot. Supported network configurations include CANopen System Bus modules (E82ZAFPC / E82ZAFPC010), PROFIBUS-DP modules (E82ZAFPC200), and LECOM serial interfaces. Network status and diagnostic words are transmitted over the bus, allowing remote start/stop control, speed setpoint modification, and drive state monitoring.
Diagnostics and Status Indication
Onboard status indication on the Lenze E82EV751_4B040 is provided by dual LEDs located on the drive face. A green LED indicates operational state, flashing when ready for operation and remaining solid when the drive is enabled and actively running. A red LED flashes or remains solid to indicate an active fault condition or controller pulse inhibit.
Advanced diagnostic readout is available through the Keypad XT operator panel, which displays clear alphanumeric fault codes. Technicians can also monitor real-time operating variables and diagnostic status words using Lenze Global Drive Control (GDC) software or via connected fieldbus networks.
Status LED Indicators
| LED | Color/Status | Meaning |
|---|---|---|
| Green LED | Green - Flashing or Continuous | Operation / Ready. Flashing green = ready for operation; continuous green = drive enabled and running. |
| Red LED | Red - Flashing or Solid | Fault active / Pulse inhibit. Indicates drive error condition or controller inhibit. |
Replacement and Spare Part Considerations
Replacing a Lenze E82EV751_4B040 requires ensuring that the replacement drive matches the exact part number and power rating. Because the drive uses a modular construction, the installed plug-in function module (Standard I/O or Application I/O) and fieldbus communication card (such as CANopen or PROFIBUS-DP) must be transferred from the original unit to the spare drive.
A replacement inverter will not run straight out of the box without transferring the machine configuration. Machine settings stored across the four parameter sets in internal EEPROM memory must be cloned using the Keypad XT module or reloaded from a GDC software backup file. For long-term facility modernization, Lenze recommends migrating legacy 8200 Vector drives to the current i550 cabinet inverter 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 / Overcurrent Acceleration | Short circuit or extreme overcurrent detected during motor acceleration. | Short circuit in motor cable; motor winding fault; acceleration time set too short; motor cable too long. | Check motor wiring and insulation; increase acceleration time; check drive sizing. |
| OC2 | Overcurrent Deceleration | Overcurrent detected during motor deceleration. | Deceleration time set too short; mechanical jam or overload during braking. | Increase deceleration time; check brake chopper / brake resistor; check mechanical load. |
| OC5 | Overcurrent Constant Operation | Overcurrent detected during steady-state constant speed operation. | Sudden load impulse or mechanical blockage; motor defect. | Inspect mechanical drive train for binding; test motor insulation. |
| OU | DC Bus Overvoltage | DC bus voltage exceeded upper threshold level. | Regenerative energy from motor during deceleration; deceleration time too short; main supply voltage too high. | Extend deceleration ramp time; fit brake resistor / brake unit; check mains voltage. |
| LU | DC Bus Undervoltage | DC bus voltage fell below lower threshold level. | Mains supply failure or phase drop; line voltage drop under load; input fuse blown. | Check input voltage supply and supply fuses; verify line connections. |
| OH | Heatsink Overtemperature | Inverter heatsink temperature exceeded maximum allowable limit. | Inadequate cabinet ventilation; cooling fan dirty or defective; ambient temperature too high; continuous overload. | Clean heatsink cooling fins; verify enclosure fan operation; improve cabinet airflow. |
| OH4 | Motor Overtemperature | Motor temperature sensor trip. | Motor thermal sensor (PTC) triggered due to motor overload or poor motor cooling. | Allow motor to cool down; check thermal sensor wiring; reduce mechanical load. |
| OH7 | Internal Inverter Temperature High | Internal air temperature inside inverter housing is too high. | Ambient temperature inside control cabinet is excessively high. | Cool control cabinet; check internal fan. |
| EE | EEPROM Memory Error | Internal parameter memory corruption or hardware memory fault. | EEPROM read/write failure; internal hardware fault; power interruption during parameter save. | Reload factory default settings (C0002). If error persists, internal hardware defect present — return unit for repair or replace inverter. |
| rCE | Communication Error with Keypad / PC | Communication interruption between inverter and Keypad XT / serial interface module. | Bad contact on plug-in module slot; serial cable disconnected or interference. | Check seating of plug-in Keypad or module; inspect connecting cables and shielding. |
| CE0 | Communication Error Fieldbus Slot | Communication fault on optional fieldbus module slot. | Fieldbus cable disconnected; master offline; communication timeout. | Verify fieldbus cabling, bus termination resistors, and master PLC status. |
| P01 | Parameter Error | Inconsistent or invalid parameter setting. | Parameter value outside valid range or conflicting settings. | Check recent parameter changes or restore default parameters. |
| H10 | Internal Hardware Fault | Internal micro-controller or gate drive hardware failure detected. | Internal circuit component failure. | Internal hardware fault — non-field-serviceable. Replace the inverter unit. |
Frequently Asked Questions
What software is used to program the Lenze E82EV751_4B040 inverter?
Drive programming and monitoring are performed using Lenze Global Drive Control (GDC) software or directly via the plug-in Keypad XT (E82ZBC) operator module.
How do I transfer parameters from a failed drive to a replacement E82EV751_4B040?
Parameters stored in the four EEPROM memory sets can be cloned directly using the Keypad XT operator module without a PC, or restored using Lenze GDC software from a saved project file.
What communication modules are supported by the 8200 Vector E82EV751_4B040?
The drive supports optional fieldbus modules including CANopen System Bus modules (E82ZAFPC / E82ZAFPC010), PROFIBUS-DP modules (E82ZAFPC200), and LECOM serial interface modules.
What does a solid or flashing red LED on the E82EV751_4B040 indicate?
A red LED indicates an active drive fault condition or a controller pulse inhibit state. Exact fault details can be read using the Keypad XT display or GDC software.
Can internal hardware faults like code H10 be repaired in the field?
No, error code H10 indicates an internal micro-controller or gate drive hardware failure that is non-field-serviceable. The inverter unit must be replaced or sent for repair.
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