Lenze EVF8604-E 8600 Series 4.0kW Frequency Inverter
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Product Information
The Lenze EVF8604-E is a 4.0 kW frequency inverter from the 8600 series designed for precise speed control of three-phase AC asynchronous motors. Operating on a 3x 400 to 480 V AC mains supply with an operating tolerance of 320 to 528 V AC, this AC drive delivers a continuous output current of 9.5 A across an output frequency range of 0 to 480 Hz. Drive performance is optimized using either standard V/f characteristic control or high-accuracy vector control algorithms, ensuring stable operation in applications such as conveyor belts, industrial pumps, fans, packaging machinery, and material handling systems.
Interfacing with local control circuits is supported via standard terminal connections for digital and analog signals, while optional fieldbus modules enable communication over LECOM RS232/RS485, 2131IB / 2133IB PROFIBUS-DP, or 2172IB CANopen networks. When integrating a replacement unit into an active installation, the drive requires configuration alignment before operation. Dual parameter sets stored in internal non-volatile EEPROM can be configured or cloned directly using the Lenze E82ZBC operating keypad module or Lenze Global Drive Control (GDC) software. ABC Industrial Parts can support maintenance teams with tested replacement units and parameter transfer assistance to minimize machine downtime.
Diagnostics and operational state monitoring are indicated via front-panel RUN and TRIP LEDs alongside software diagnostic tools. A solid green RUN LED indicates normal ready or running status, while a flashing green LED signifies an active controller inhibit or start lock. Warning conditions trigger a flashing red TRIP LED, and active fault states present a solid red TRIP LED accompanied by TRIP codes in the C003 fault register and C009 error log. Common field issues include mains voltage variations, motor overload, overvoltage during braking, or communication loss, which can be resolved by inspecting input power, motor insulation, braking components, and fieldbus wiring. Internal hardware failures or EEPROM corruption indicated by fault code EE are not field-serviceable, making drive replacement or specialist repair through ABC Industrial Parts the recommended solution.
Technical Specifications
| Manufacturer | Lenze |
| Part Number | EVF8604-E |
| Model / Type | EVF8604-E |
| Product Family | 8600 |
| Component Type | Frequency Inverter |
| Rated Power | 4.0 kW |
| Supply Voltage Range | 3x 400 V AC - 480 V AC (320 V AC - 528 V AC tolerance) |
| Continuous Output Current | 9.5 A |
| Output Frequency Range | 0 Hz - 480 Hz |
| Control Method | V/f Characteristic Control, Vector Control |
| Parameter Memory | Dual Parameter Sets (Internal EEPROM) |
Programming and Configuration
The Lenze EVF8604-E frequency inverter uses non-volatile internal EEPROM to store two complete, independent parameter sets. This internal memory architecture allows operators to preserve application parameters securely without continuous backup power.
Drive setup and parameter adjustments are performed using either the plug-in Lenze E82ZBC operating keypad module or Lenze Global Drive Control (GDC) engineering software. The keypad allows direct parameter modifications and rapid parameter cloning between drives, while GDC software offers full commissioning and parameter management capabilities via connected interface modules.
Communication and System Integration
Local control signals for the EVF8604-E frequency inverter are wired directly using terminal connections on the drive, providing inputs and outputs for digital and analog control functions.
For fieldbus architecture and centralized system integration, the drive features modular expansion slots supporting optional fieldbus adapters. Available communication options include LECOM RS232/RS485 modules for point-to-point and multi-drop serial interfaces, 2131IB / 2133IB PROFIBUS-DP modules, and 2172IB CANopen modules.
Diagnostics and Status Indication
System state monitoring for the EVF8604-E is accessible via multi-color front panel LED indicators, keypad fault registers, and GDC diagnostic software. The drive records active fault conditions in the C003 fault register and retains diagnostic history in the C009 error log for quick troubleshooting.
Front-panel status LEDs provide immediate feedback on drive status. The RUN LED indicates drive execution or inhibit states, while the TRIP LED signals active warning or fault conditions.
Status LED Indicators
| LED | Color/Status | Meaning |
|---|---|---|
| TRIP | Red - Solid | Fault condition / TRIP state |
| TRIP | Red - Flashing | Warning state |
| RUN | Green - Solid | Drive ready / running |
| RUN | Green - Flashing | Active inhibit or start lock |
Replacement and Spare Part Considerations
Although the legacy Lenze 8600 series, including the EVF8604-E, has been discontinued by the manufacturer, direct replacement units remain essential for maintaining existing control systems without requiring structural redesign.
When replacing a failed unit, matching the rated motor power of 4.0 kW and verifying the installed fieldbus module options are critical steps. To bring the replacement inverter into service, parameter sets stored in the existing unit or software backup must be cloned to the replacement drive using the E82ZBC keypad module or GDC software before running the motor.
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 / Ground Fault | Short circuit or short to ground on motor output phases | Short circuit in motor winding or cable; ground fault; acceleration ramp too steep; motor power mismatched to inverter | Check motor cable and motor insulation; check acceleration time settings; check for output earth fault |
| OC5 | Drive Overload | Continuous excessive motor current or overload condition during operation | Mechanical overload; motor stalled; acceleration time too short; motor undersized | Check mechanical load for jam; extend acceleration time; check current limit parameter settings |
| OU | Overvoltage DC Bus | Intermediate circuit DC bus voltage exceeds upper threshold limit | Braking energy regenerated from motor during deceleration; deceleration time too short; mains supply voltage too high | Extend deceleration time; install braking resistor or chopper module; check mains input voltage level |
| LU | Undervoltage DC Bus | Intermediate circuit DC bus voltage fell below lower threshold limit | Mains supply failure; phase loss; mains input voltage too low; transient voltage dip | Check mains voltage and line fuses; check input wiring for loose connections |
| OH | Heatsink Overtemperature | Inverter heatsink temperature exceeds maximum allowed limit | Insufficient cooling airflow; ambient temperature too high; cabinet fan defective or blocked; heatsink dirty | Clean heatsink fins; ensure cabinet ventilation and fan operation; reduce switching frequency or load |
| OH4 | Motor Overtemperature | Motor temperature sensor (PTC / thermal contact) triggered | Motor thermal overload; motor cooling fan failure or blocked air path; incorrect PTC wiring | Allow motor to cool; check motor loading; inspect external motor cooling fan; verify PTC sensor connections |
| CE0 | Communication Fault | Communication interruption on LECOM or Fieldbus module interface | Loose fieldbus connector; communication cable break; master controller timeout; wrong baud rate setting | Check communication cable and connectors; check bus termination resistors; verify controller polling interval |
| EE | Internal EEPROM Fault | Memory checksum error or internal board communication failure | Internal memory corruption or hardware board-level component fault | Internal hardware fault — reset parameters to factory defaults; if error persists, return unit for repair or replace inverter |
| EEr | Parameter Reading Error | Error occurred while reading parameter set from memory or keypad | Incompatible parameter file; transfer interrupted during reading | Re-transfer parameter set; re-initialize factory defaults and reconfigure parameter settings |
Frequently Asked Questions
How do I transfer parameters to a replacement Lenze EVF8604-E inverter?
Parameters can be transferred by saving the parameter set to a plug-in Lenze E82ZBC operating keypad module or by uploading the configuration using Lenze Global Drive Control (GDC) software, then downloading the parameter set into the replacement unit.
What control modes are supported by the EVF8604-E frequency inverter?
The EVF8604-E supports both V/f characteristic control for general-purpose applications and high-accuracy vector control for dynamic speed regulation.
What do the RUN and TRIP LEDs indicate on the EVF8604-E drive?
A solid green RUN LED means the drive is ready or running, while a flashing green RUN LED indicates an active inhibit or start lock. A flashing red TRIP LED indicates a warning condition, and a solid red TRIP LED signifies an active TRIP fault state.
Which communication modules can be used with the Lenze EVF8604-E?
The drive supports optional communication modules including LECOM RS232/RS485 modules, 2131IB / 2133IB PROFIBUS-DP modules, and 2172IB CANopen modules.
What action should be taken if fault code EE appears?
Fault code EE indicates an internal EEPROM fault or hardware board-level failure. You should attempt to reset parameters to factory defaults; if the fault persists, the inverter requires internal repair or unit replacement.
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Data backup and recovery
Have you lost valuable parameters or data due to a malfunction while the manufacturer no longer provides support? At ABC Industrial Parts, we help you secure this data, both for common and specific products.
Specific firmware and hardware versions
If you are working with specific hardware or firmware versions that are no longer available from the manufacturer, ABC Industrial Parts is your partner. When making your enquiry, clearly state which versions you need, we will then look at the possibilities of supplying those versions, so that your installations continue to function optimally.
Disclaimer:
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