Lenze 8603_E.2D.20 8600 Series 1.5 kW Frequency Inverter
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Product Information
The Lenze 8603_E.2D.20 is a 1.5 kW digital frequency inverter within the Lenze 8600 series, engineered for precise speed control and torque regulation of three-phase AC asynchronous induction motors. Operating on a nominal 400V AC line supply across an acceptable voltage range of 320V AC to 528V AC, this compact drive unit delivers a continuous output current of 3.9 A with an output voltage range from 0 to 400V AC and output frequencies up to 480 Hz. Operating modes include standard V/f characteristics and dynamic sensorless vector control, providing reliable motor regulation for applications across conveyor systems, industrial pumps, fans, and positioning auxiliary drives.
Connecting the inverter to machine automation architectures is managed through built-in screw terminal blocks for local analog and digital I/O alongside an internal modular slot for fieldbus communications. The drive supports optional network cards including PROFIBUS-DP, CANopen, and LECOM-A/B protocols. Placing a replacement drive into service requires parameter transfer, as blank replacement units do not retain machine-specific operational parameters. Configuration parameters stored in internal non-volatile EEPROM memory across dual parameter sets (PAR1 and PAR2) can be transferred by moving the pluggable Operating Module 2102 keypad or using Global Drive Control (GDC) PC software over a LECOM interface. ABC Industrial Parts can support system restoration through parameter verification and pre-commissioned replacement units.
Drive status and fault conditions are signaled through a combined Green/Red Ready and Fault LED on the front interface, displaying blinking green for controller inhibit or ready states, solid green during normal operation, blinking red for warnings, and solid red for active trip shutdowns. In-depth diagnostics are accessible by interrogating parameter C013 fault history via the keypad module, monitoring real-time parameter windows in Global Drive Control (GDC) software, or measuring physical signals at the I/O terminals. Initial field troubleshooting involves checking input supply balance on terminals L1, L2, and L3, testing motor insulation integrity, verifying cooling fan function, and confirming acceleration ramp configurations. Internal hardware issues, such as EEPROM memory errors or internal thermal sensor failures, require physical board repair or complete unit exchange through ABC Industrial Parts.
Technical Specifications
| Rated Power | 1.5 kW |
| Nominal Supply Voltage | 400 V AC |
| Supply Voltage Range | 320 - 528 V AC |
| Rated Input Current | 4.8 A |
| Continuous Output Current | 3.9 A |
| Output Voltage Range | 0 - 400 V AC |
| Output Frequency Range | 0 - 480 Hz |
| Switching Frequency | 8 kHz (Selectable 4 kHz, 8 kHz, 16 kHz) |
| Control Method | V/f Control / Sensorless Vector Control |
Programming and Configuration
Programming and parameter alignment for the Lenze 8603_E.2D.20 inverter are conducted using the detachable Lenze Operating Module 2102 keypad or Global Drive Control (GDC) PC software via a LECOM communications connection. The drive contains non-volatile EEPROM memory engineered to retain two complete, independent parameter records identified as PAR1 and PAR2. This dual-memory capability allows maintenance personnel to maintain backup configurations directly within the hardware.
When commissioning a spare inverter, configuration data must be written to the target unit. Using the pluggable 2102 keypad module allows direct cloning of parameters between units. Alternatively, connecting a PC running GDC software provides a full graphical parameter interface for uploading, editing, and saving parameter files. Essential adjustments—such as configuring acceleration ramps in parameter C012 or reading historical fault records in parameter C013—guarantee proper alignment with application requirements.
Communication and System Integration
The Lenze 8603_E.2D.20 frequency inverter integrates into control cabinets using built-in screw terminal blocks designed for wired discrete and analog signals. These connections handle speed reference inputs, start/stop commands, and status feedback signals tied directly to standard control circuits.
Higher-level PLC integration is supported through an internal modular expansion slot. The inverter accepts option cards for fieldbus protocols including PROFIBUS-DP, CANopen, and LECOM-A/B. Installing a communication card allows centralized control, speed command transmission, and real-time operational status monitoring over industrial networks. Address switches, baud rate configurations, and network termination settings on the option module must be configured during integration.
Diagnostics and Status Indication
Operational diagnostic checks on the Lenze 8603_E.2D.20 are supported by a front-panel visual indicator and built-in monitoring parameters. The combined Ready / Fault LED signals live conditions using color and flash sequence variations: blinking green indicates controller inhibit or ready status, solid green confirms active inverter operation, blinking red highlights a warning condition, and solid red indicates a TRIP fault resulting in output shutdown.
For targeted fault analysis, maintenance technicians can query parameter C013 using the Operating Module 2102 keypad to access the recorded fault log. In addition, connecting via Global Drive Control (GDC) PC software provides access to live parameter monitoring windows that track DC bus voltage, output frequency, and continuous output motor current.
Status LED Indicators
| LED | Color/Status | Meaning |
|---|---|---|
| Ready / Fault LED | Green / Red - Solid / Blinking | Green blinking = Controller inhibit / Ready; Green solid = Drive running; Red blinking = Warning condition; Red solid = TRIP fault condition / Shutdown active |
Replacement and Spare Part Considerations
When replacing an existing Lenze 8603_E.2D.20 frequency inverter, verify that the replacement drive matches the 1.5 kW power rating and 400V supply specification. Because a newly supplied unit will not hold application settings, parameter transfer is necessary prior to motor operation. Parameter structures must be imported using Global Drive Control (GDC) software or copied from the original drive using the pluggable Operating Module 2102 keypad.
If the existing drive uses network connectivity, any installed option card—such as PROFIBUS-DP, CANopen, or LECOM-A/B—must be transferred to the replacement unit or replaced with an equivalent module. Verify that node address dials, baud rates, and bus termination switches are configured to match the original setup. Where complete system retrofits are planned, suitable modern functional replacement options include the Lenze 8200 vector series or the Lenze 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 |
|---|---|---|---|---|
| OH | Heatsink Overtemperature | Heatsink temperature has exceeded maximum safe limit. | Inadequate cooling, ambient temperature too high, fan failure, or excessive load. | Check cabinet ventilation, clean cooling fins, verify cooling fan operation, reduce load or duty cycle. |
| OH1 | Internal Drive Temperature Fault | Internal enclosure or component temperature limit exceeded. | Internal temperature inside the inverter is too high. | Improve ambient ventilation; if condition persists despite low ambient temperature, internal hardware thermal sensor failure may require factory repair. |
| OC1 | Short Circuit / Overcurrent during Acceleration | Output current exceeded internal peak trip threshold during acceleration. | Acceleration time set too short, motor short circuit, ground fault, or undersized inverter. | Increase acceleration time (C012), check motor wiring and insulation, test motor for winding shorts. |
| OC2 | Short Circuit / Overcurrent during Deceleration | Output current exceeded internal trip limit during motor deceleration. | Deceleration time set too short, high load inertia, or mechanical jam. | Increase deceleration time, install or check brake resistor if applicable, inspect mechanical load. |
| OC5 | Overcurrent during Constant Speed Operation | Output current exceeded threshold while operating at steady reference speed. | Sudden load spike, mechanical blockage, motor fault. | Inspect mechanical system for jams, test motor windings and wiring integrity. |
| OU | DC Bus Overvoltage | DC bus voltage exceeded safe operational maximum limit. | Regenerative power from motor during deceleration, deceleration ramp too fast, mains supply transient. | Extend deceleration time, connect external brake chopper/resistor, check mains supply voltage level. |
| LU | DC Bus Undervoltage | DC bus voltage dropped below minimum operational threshold. | Mains supply brownout, input phase loss, power supply dip. | Verify line input AC voltage, check input fuses and line contactor. |
| OL1 | Motor Overload (I2t) | Calculated motor thermal load (I2t integration) reached trip point. | Continuous motor operation above rated current, incorrect motor data programmed. | Check motor sizing, verify load torque, verify motor parameters in parameter settings. |
| OL2 | Inverter Overload | Inverter continuous output load capacity exceeded. | Drive loaded beyond continuous current rating for an extended period. | Reduce motor load or upgrade drive power rating. |
| EE0 | EEPROM Memory Error | Internal EEPROM memory failure or checksum error on parameter load. | Corrupted non-volatile parameter memory or internal EEPROM chip failure. | Perform factory parameter reset; if error persists, internal control board fault — return unit for service/repair. |
| CE0 | Communication Error / Option Module Interrupt | Communication failure between control unit and installed fieldbus option module or control panel. | Loose module attachment, fieldbus timeout, baud rate mismatch. | Check communication cable and termination, re-seat option module, verify node address and baud rate settings. |
| LP | Mains Phase Failure | One phase of the 3-phase AC input supply is missing or unbalanced. | Blown input fuse, loose line connection, supply line phase drop. | Check all 3 input line voltages at terminals L1, L2, L3 and replace any blown supply line fuses. |
| EFr | Earth / Ground Fault | Ground fault current detected on motor output terminals. | Motor winding shorted to ground or motor cable insulation failure. | Check motor cable insulation with megohmmeter, test motor stator insulation. |
Frequently Asked Questions
How do I transfer parameters from a failed Lenze 8603_E.2D.20 to a replacement unit?
Parameter configurations can be transferred by attaching the pluggable Operating Module 2102 keypad to the replacement inverter to copy saved settings, or by uploading the parameter file via Global Drive Control (GDC) PC software over a LECOM interface and loading it into non-volatile EEPROM memory.
What causes fault code EE0 on the Lenze 8603_E.2D.20 inverter?
Fault code EE0 indicates a non-volatile EEPROM memory checksum error or parameter load corruption. Initial recovery involves performing a factory parameter reset and reload. If the error persists, internal control hardware repair or replacement is necessary.
Which fieldbus communication options are supported by the 8603_E.2D.20 drive?
The Lenze 8603_E.2D.20 supports fieldbus communications via plug-in option cards installed in its modular extension slot, including PROFIBUS-DP, CANopen, and LECOM-A/B interfaces.
How does the Ready / Fault LED display drive operating status?
The combined LED uses green and red states to show operational status: blinking green signifies controller inhibit or ready status, solid green indicates active drive operation, blinking red alerts to a warning condition, and solid red indicates a active TRIP shutdown.
What motor protection functions are built into the 8603_E.2D.20 inverter?
The inverter includes integrated electronic I2t thermal motor overload calculation, PTC temperature sensor monitoring, earth fault detection, output short-circuit protection, and input mains phase loss detection.
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