Lenze 8104_E.6B.22 8100 Series Frequency Inverter 2.2kW

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Product Information

Product Family: Lenze 8100 | Series: 8100 series

The Lenze 8104_E.6B.22 is a panel-mount frequency inverter rated for 2.2 kW power output within the Lenze 8100 series, engineered for precise variable speed control of three-phase asynchronous AC motors. Operating across a broad three-phase mains supply voltage range of 320 V AC to 528 V AC at a nominal 400 V AC rating, this drive delivers a continuous output current of 5.6 A with a configurable output frequency spanning 0 to 480 Hz. Designed for driving pumps, ventilation fans, conveyor belts, and general industrial automation machinery, it utilizes open-loop V/f characteristic control with selectable linear and quadratic curves to optimize torque delivery and energy usage.

For integration into machine electrical cabinets and automation networks, the inverter features a control terminal block with six digital inputs, two digital outputs, two analog setpoint inputs, and one analog output. Network integration is made flexible via a dedicated slot that accepts plug-in communication modules, including LECOM-A (RS-232), LECOM-B (RS-485), optical fiber (LECOM-LI), and PROFIBUS-DP adapters such as the 2131IB or 2133IB. Commissioning a replacement unit requires matching configuration settings, which are stored internally in non-volatile EEPROM memory without requiring a battery backup; parameter extraction and downloading can be performed via the plug-in 8100 Keypad or Lenze Global Drive Control (GDC) PC software, with support available from ABC Industrial Parts for acquiring tested replacement drives.

System status monitoring and operational diagnostics are provided directly through onboard status LEDs, relay terminal outputs, and diagnostic parameters accessible via the LECOM interface or keypad display. A solid green Ready LED confirms that the DC bus is charged and the inverter is operational, whereas a solid red Fault LED indicates an active drive trip condition. In the event of internal parameter corruption or hardware faults indicated by an unresettable EE code, field repairs on the internal circuit boards are not supported, making a direct unit swap or expert repair service through ABC Industrial Parts the recommended solution to restore machinery operation.

Technical Specifications

ManufacturerLenze
Part Number8104_E.6B.22
Model / Type8104 E.6B.22
Component TypeFrequency Inverter
Rated Power2.2 kW
Nominal Supply Voltage400 V AC (3-phase)
Supply Voltage Range320 V AC - 528 V AC
Continuous Output Current5.6 A
Output Frequency Range0 - 480 Hz
Switching Frequency8 kHz (selectable up to 16 kHz)
Control MethodV/f linear or quadratic characteristic control
Digital Inputs6
Digital Outputs2
Analog Inputs2 (0-10V / 0-20mA)
Analog Outputs1
Parameter StorageNon-volatile EEPROM (no battery required)

Programming and Configuration

Parameter management for the Lenze 8104_E.6B.22 is executed via Lenze Global Drive Control (GDC) PC software or the optional plug-in 8100 Keypad operating module. All operating parameters—including acceleration and deceleration ramps, V/f operating curve selections, switching frequency settings up to 16 kHz, and I/O terminal assignments—are configured and stored directly in internal non-volatile EEPROM memory, eliminating the need for a backup battery.

When deploying a spare unit or adjusting machine performance, technicians can quickly upload parameter sets from a donor drive or backup file using the GDC software environment over a LECOM communication link. Alternatively, copying settings via the 8100 Keypad allows fast cloning across duplicate drives on the shop floor. In situations where drive behavior becomes erratic due to improper parameter adjustment, a factory parameter reset can be initiated by executing code C0002 to restore default drive conditions before re-commissioning.

Communication and System Integration

The 8100 series architecture incorporates a modular fieldbus interface slot that enables integration into centralized PLC and SCADA environments. By selecting the appropriate optional communication adapter module, the 8104_E.6B.22 can connect via LECOM-A (RS-232), LECOM-B (RS-485), or LECOM-LI (optical fiber) serial links, as well as fieldbus networks using PROFIBUS-DP modules such as the 2131IB or 2133IB.

Hardwired hard-real-time control signals connect via the terminal strip, which provides six digital inputs for run commands, direction, and trip reset signals, alongside two digital outputs and relay output contacts for operational ready and fault indications. Speed setpoints are interfaced via two analog inputs supporting standard voltage (0-10V) or current (0-20mA) signals, complemented by one analog output for monitoring actual output frequency or motor load.

Diagnostics and Status Indication

Drive operational status and active faults are monitored via front panel LED indicators, relay contact outputs, and numerical codes shown on the plug-in 8100 Keypad. Diagnostic parameters C0161 and C0168 can also be queried over the LECOM fieldbus interface to analyze fault history and detailed drive status from a remote controller or PC software.

The onboard status LEDs offer immediate visual confirmation of drive health. A solid green LED indicates that the DC-bus voltage is charged and the inverter is ready for operation. A solid red LED indicates an active fault trip condition that has stopped drive output. If the red LED remains illuminated continuously alongside an EE code on the keypad display and cannot be cleared by power cycling or resetting, it indicates a hardware breakdown in the EEPROM or internal power board.

Status LED Indicators

LEDColor/StatusMeaning
Ready / PowerGreen - SolidDC-bus charged and drive ready for operation
Fault / TripRed - SolidDrive fault trip active. If LED remains lit continuously with EE error code and cannot be reset, indicates internal EEPROM / board hardware failure requiring unit replacement or service.

Replacement and Spare Part Considerations

When replacing an existing Lenze 8104_E.6B.22 inverter, ensure the replacement unit matches the required power rating (2.2 kW) and 400V supply specification. Prior to powering up the machine with a spare drive, all parameters from the original unit must be loaded into the replacement. Because settings are held in EEPROM, parameter sets can be written directly using the Lenze Global Drive Control software or transferred using a plug-in 8100 Keypad.

If replacing optional fieldbus modules, verify that the existing communication card (such as LECOM-A, LECOM-B, or PROFIBUS-DP adapters 2131IB / 2133IB) is reinstalled correctly into the replacement drive's fieldbus slot and that address switches match the original network settings.

For modernizing control cabinets where the legacy 8100 series is being replaced by current technology, the modern successor designated by the manufacturer is the Lenze i500 series (part number i55AE222F). When migrating to the i500 series, panel dimensions, wiring layouts, and parameter structures will differ and require system redesign.

Error Codes & Fault Codes

The following error codes may be displayed during operation or diagnostics:

CodeNameDescriptionPossible CauseRecommended Action
OC1Overcurrent during accelerationOutput current exceeds trip limit during acceleration phaseAcceleration time set too short; short circuit or ground fault in motor cable; motor power mismatched to inverter.Increase acceleration time; check motor and cabling for short circuits or earth faults; verify motor sizing.
OC2Overcurrent during decelerationOutput current exceeds trip limit during deceleration phaseDeceleration time set too short; brake resistor missing or misconfigured.Increase deceleration time; connect external brake resistor if regenerative energy is high.
OC5Overcurrent during constant operationOutput current exceeds trip limit during steady-state speed operationSudden mechanical load peak; motor stall; power stage fault.Check mechanical drive train for jamming; check motor parameters.
OUOvervoltage in DC busDC-bus voltage exceeded maximum allowable thresholdRegenerative energy from motor overhauling load during deceleration; deceleration time too short.Extend deceleration time; fit braking module / brake chopper and brake resistor.
LUUndervoltage in DC busDC-bus voltage dropped below minimum thresholdMains supply voltage too low; mains phase failure; power failure.Check AC mains supply voltage and fuses; check power wiring.
OHHeatsink overtemperatureInverter heatsink temperature exceeds limitInadequate cooling / ventilation; ambient temperature too high; fan defective or clogged.Clean heatsink cooling fins; verify enclosure ventilation and cooling fan operation.
OH4Motor thermal overloadMotor temperature switch or PTC sensor trippedMotor thermal overload; cooling fan on motor defective; PTC sensor wire open circuit.Allow motor to cool down; check motor load; verify PTC wiring and terminal connection.
PEEarth fault / Ground faultGround fault detected on motor output phasesInsulation breakdown in motor winding or motor cable to ground.Check insulation resistance of motor cabling and motor windings with insulation tester.
EEEEPROM errorInternal memory failure or checksum error during parameter read/writeCorrupted non-volatile parameter memory; internal hardware failure.Perform factory parameter reset (C0002). If error persists, internal hardware fault — return unit for repair or replace inverter.
LPMotor phase lossPhase loss detected at inverter output terminals U, V, WOpen circuit in motor cable; contactor opened downstream during run.Check motor output connections and motor contactor logic.
CE0LECOM communication timeoutCommunication interruption between inverter and LECOM masterFieldbus cable disconnected; baud rate mismatch; master controller offline.Check fieldbus cable connections and bus master state.
EErExternal tripExternal fault triggered via programmed digital inputExternal monitoring device (e.g. thermal relay, safety switch) tripped.Check external fault circuit connected to configured digital input.

Frequently Asked Questions

What is the power rating and input voltage requirement for the Lenze 8104_E.6B.22?

The Lenze 8104_E.6B.22 frequency inverter has a rated power output of 2.2 kW and operates on a 3-phase 400 V AC nominal supply voltage, with an allowable input voltage range of 320 V AC to 528 V AC.

How do I transfer parameters from a failed 8104_E.6B.22 to a replacement drive?

Parameter sets can be uploaded from the original drive or backup file and downloaded to the replacement unit using Lenze Global Drive Control (GDC) PC software via a LECOM module, or copied using the plug-in Lenze 8100 Keypad. All settings are stored in internal non-volatile EEPROM.

What does an EE fault code mean on the Lenze 8100 series inverter?

An EE fault code indicates an EEPROM memory or checksum error. You should first attempt a factory parameter reset using code C0002. If the code persists and the red fault LED remains lit, it indicates an unrecoverable hardware failure requiring drive replacement or repair.

Which communication protocols are supported by the 8104_E.6B.22?

The drive features an open fieldbus slot that supports LECOM-A (RS-232), LECOM-B (RS-485), optical fiber (LECOM-LI), and PROFIBUS-DP when equipped with matching plug-in modules such as the 2131IB or 2133IB.

What modern drive replaces the discontinued Lenze 8104_E.6B.22?

The modern replacement series recommended for replacing legacy 8100 drives is the Lenze i500 series, specifically part number i55AE222F for a 2.2 kW rating.

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