Lenze 45322761 E82EV751_2B 8200 Vector Frequency Inverter
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Product Information
The Lenze 45322761, model number E82EV751_2B, is a 0.75 kW AC frequency inverter from the 8200 vector drive family, engineered for precise speed and torque regulation of induction motors in industrial machinery. Designed to operate on single-phase or three-phase 230 V AC supply networks across an input range of 180 V to 264 V AC, this compact IP20-rated inverter delivers a continuous output current of 4 A with an 8 kHz switching frequency. To accommodate high inertia starting loads and sudden torque demands, the unit features a 150% overload capacity, providing up to 6 A of peak current for 60 seconds across an output frequency spectrum of 0 Hz to 480 Hz.
Commissioning a spare drive requires transferring the operational configuration and fitting any required interface hardware, as the modular base architecture relies on swappable plug-in function modules and keypads. The inverter supports open-loop V/f characteristics, sensorless vector control, and closed-loop speed control when equipped with feedback options, alongside fieldbus integration via plug-in modules for CANopen, PROFIBUS DP, RS-485 Modbus, and Lenze LECOM protocols. Up to four complete parameter sets can be stored in the non-volatile internal EEPROM, which can be extracted or uploaded using the Lenze XT Keypad E82ZBC, Lenze Global Drive Control (GDC) software, or Lenze EASY Starter. When bringing a replacement unit online, parameter extraction from a faulty board or donor drive by ABC Industrial Parts helps ensure all motor parameters, ramp profiles, and fieldbus node configurations match the existing machine setup before enabling the drive.
Real-time operating status and fault diagnostics are indicated through front panel LEDs and internal monitoring registers. A solid green LED indicates that the drive is enabled and running, while a flashing green LED indicates a drive inhibit state such as code IMP, caused by terminal X5/28 being low or a bus disable command. A solid or blinking red LED signals an active fault condition, such as overcurrent (OC1, OC2, OC5), overvoltage (OU), undervoltage (LU), or heatsink overtemperature (OH). Diagnostics can be queried through live monitor parameters C005x or the C0168 trip log memory. While field issues like line phase loss (LP1) or signal wiring can be addressed on-site, internal hardware failures such as code H05 or persistent EEPROM memory errors (EE) are non-field-serviceable, making unit replacement or tested repair through ABC Industrial Parts the quickest solution to minimize machine downtime.
Technical Specifications
| Manufacturer | Lenze |
| Part Number | 45322761 |
| Model / Type | E82EV751_2B |
| Product Family | 8200 vector |
| Component Type | Frequency Inverter |
| Rated Power | 0.75 kW |
| Supply Voltage Range | 180 - 264 V AC (1-phase / 3-phase 230 V AC) |
| Continuous Output Current | 4 A |
| Maximum Output Current (60s Overload) | 6 A |
| Output Frequency Range | 0 - 480 Hz |
| Switching Frequency | 8 kHz |
| Control Methods | V/f linear, V/f quadratic, Sensorless Vector Control, Closed-loop Vector Control |
| Power Dissipation | 40 W |
| Ingress Protection Rating | IP20 |
Programming and Configuration
Parameterization of the Lenze E82EV751_2B frequency inverter is facilitated through non-volatile internal EEPROM memory capable of retaining up to four individual parameter sets. Drive setup can be performed directly using the plug-in XT Keypad E82ZBC or via a PC connection using Lenze Global Drive Control (GDC) or Lenze EASY Starter software packages.
During setup, engineers can configure motor control modes, including linear or quadratic V/f curves, sensorless vector speed regulation, and closed-loop control. Should parameter corruption occur, restoring the drive to factory default settings is executed by setting parameter C0002 to 1, after which stored machine profiles can be reloaded to complete commissioning.
Communication and System Integration
The modular architecture of the 8200 vector series decouples control logic from physical communication hardware through interchangeable plug-in function modules. The main power unit integrates with fieldbus modules supporting CANopen, PROFIBUS DP, RS-485 Modbus, and Lenze LECOM protocols to suit specific plant automation topologies.
Drive control and enable commands can be managed through physical terminal inputs or digital communication words. Controller enable signal input requires a +24 V HIGH level applied to terminal X5/28, and any loss of communication between the base drive and an installed function module triggers fault code CE0, requiring verification of module seating, shielding, and bus line integrity.
Diagnostics and Status Indication
Operational state monitoring on the E82EV751_2B is provided via front-mounted status LEDs and readable parameter buffers. The green LED signals drive readiness or running status, flashing when pulse inhibit is active, while the red LED flashes or lights solid during active warning and fault conditions.
Comprehensive system diagnostics are available through live monitor parameters C005x, which display real-time values for motor current, voltage, frequency, DC bus voltage, and heatsink temperature. Historical fault data is automatically stored in parameter C0168, allowing maintenance technicians to inspect previous trip codes and verify fault conditions.
Status LED Indicators
| LED | Color/Status | Meaning |
|---|---|---|
| Red LED | Red - Solid / Blinking | Fault state / Error active. Blinking red signals active trip or warning condition. |
| Green LED | Green - Solid / Flashing | Drive operational / Ready state. Solid green indicates drive enabled and running; flashing green indicates drive inhibited (IMP). |
Replacement and Spare Part Considerations
When replacing a Lenze 45322761 E82EV751_2B inverter, it is critical to transfer both the physical plug-in function module and the exact parameter profile from the existing drive. Because base units are identical across module configurations, proper fieldbus communication and terminal control depend entirely on re-using or matching the existing plug-in option module.
Parameter profiles stored in the drive's internal EEPROM must be saved prior to removal or uploaded to the replacement drive using the XT Keypad E82ZBC or Lenze GDC software. For long-term system evolution or major retrofits, Lenze recommends migrating to the i500 series cabinet inverters, such as the i510 or i550, while direct replacement with an identical 8200 vector unit remains the fastest direct drop-in path.
Error Codes & Fault Codes
The following error codes may be displayed during operation or diagnostics:
| Code | Name | Description | Possible Cause | Recommended Action |
|---|---|---|---|---|
| IMP | Inverter Disable | Pulse inhibit active / Drive enable signal missing. | Terminal X5/28 (Controller Enable) set to LOW level or disable command via communication bus. | Apply HIGH level (+24V) to terminal 28 or send drive enable command via bus. |
| OC1 | Short Circuit / Overcurrent Acceleration | Overcurrent triggered during acceleration ramp. | Acceleration time too short; short circuit or ground fault in motor cable; motor winding defect. | Increase acceleration time; inspect motor cable and motor windings for insulation resistance or short circuit. |
| OC2 | Overcurrent Deceleration | Overcurrent triggered during deceleration ramp. | Deceleration time too short; brake resistor missing or incorrectly sized. | Increase deceleration time or install/verify brake module and braking resistor. |
| OC5 | Overcurrent Constant Operation | Overcurrent triggered during steady-state speed operation. | Sudden load impulse; mechanical motor blockage; severe overload. | Check mechanical drive train for stiffness or jams; verify motor load rating. |
| OU | DC Bus Overvoltage | DC bus voltage exceeds upper threshold limit. | Excessive regenerative energy during deceleration; deceleration time too short; mains voltage too high. | Extend deceleration time; check supply voltage; connect external brake resistor module. |
| LU | DC Bus Undervoltage | DC bus voltage dropped below minimum operating limit. | Mains supply failure; phase loss; input voltage too low. | Check input supply lines, fuses, and main contractor switch. |
| OH | Heatsink Overtemperature | Inverter heatsink temperature exceeds maximum allowable limit. | Insufficient cooling airflow; ambient temperature too high; fan defective; heatsink dirty. | Clean cooling fins; ensure adequate cabinet ventilation; inspect internal cooling fan. |
| OH4 | Drive Thermal Overload (I x t) | Calculated drive thermal load limit exceeded. | Continuous operation above rated current. | Reduce motor continuous load; increase drive capacity or check machine duty cycle. |
| CE0 | Communication Error Function Module | Communication interruption between inverter and plug-in function module. | Function module loose or defective; interference on communication bus. | Re-seat function module; check grounding and shielding; replace module if fault persists. |
| EE | EEPROM Memory Error | Internal EEPROM memory read/write failure or corrupted parameter data. | Power down during parameter write operation; internal control board memory fault. | Restore parameters to factory default setting (C0002 = 1). If fault persists, internal hardware fault — replace the unit. |
| H05 | Internal Hardware Fault | Control board self-test failed or internal hardware corruption. | Internal electronic components malfunction. | Internal hardware failure — non-field-serviceable; return unit for repair or replace inverter. |
| LP1 | Input Phase Failure | Loss of single input line phase under load conditions. | Blown main fuse or loose wiring on AC power input supply lines. | Check AC input fuses, cabling connections, and mains phase symmetry. |
| NMAX | Maximum Speed Exceeded | Motor output speed exceeded safety limit threshold C0596. | Overhauling load; incorrect encoder scaling or control loop tuning. | Check motor parameter settings, encoder feedback cable, and mechanical system load. |
Frequently Asked Questions
How do I transfer parameter settings to a replacement Lenze E82EV751_2B inverter?
Parameters can be transferred by backing up the configuration from the original drive using the plug-in XT Keypad E82ZBC or PC software like Lenze Global Drive Control (GDC) or EASY Starter, then uploading the parameter set into the new unit's EEPROM memory.
What does code IMP mean on the drive status indication?
Code IMP indicates an Inverter Disable state where pulse inhibit is active. This occurs when terminal X5/28 (Controller Enable) receives a LOW signal level or when a disable command is sent over the communication bus.
Which communication protocols are supported by the 45322761 inverter?
The drive supports CANopen, PROFIBUS DP, RS-485 Modbus, and Lenze LECOM protocols via swappable plug-in function modules that attach to the base unit.
What action should be taken if fault code EE or H05 occurs?
Fault code EE indicates internal EEPROM memory corruption and can first be addressed by resetting the drive to factory defaults via parameter C0002 = 1. Fault code H05 indicates an internal hardware self-test failure. If EE persists after a reset or if H05 occurs, the hardware is non-field-serviceable and the unit must be repaired or replaced.
What modern replacement series is recommended for the Lenze 8200 vector line?
For system retrofits or modern upgrades, the manufacturer recommends migrating to the Lenze i500 cabinet inverter series, specifically the i510 or i550 models.
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