Lenze 8104_E.4G.12 8100E Frequency Inverter
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Product Information
The Lenze 8104_E.4G.12, also designated as EVF8104-E.4G.12, is a 2.2 kW frequency inverter from the Lenze 8100 series in design state E (8100E). Built for precise speed and torque regulation of 3-phase AC induction motors, this drive operates on a 3-phase supply voltage ranging from 320 V to 528 V AC with a nominal input current of 6 A. It delivers a continuous output current of 5.6 A across an adjustable output frequency range of 0 to 480 Hz and features an IP20 enclosure rating. The unit supports both linear or quadratic V/f characteristic control and sensorless vector control, making it suitable for constant-torque machinery as well as variable-torque applications like industrial pumps and ventilation fans.
Physical connectivity includes standard screw terminals for digital and analog I/O alongside an expansion slot designated as Slot X1. Slot X1 accommodates the optional 8101 operating keypad or various communication interfaces, including LECOM-A/B (2102 IB), PROFIBUS-DP (2131 IB / 2133 IB), and CANopen (2171 IB / 2172 IB). When commissioning a replacement drive in an existing panel, the spare cannot run directly without initial setup; parameter configurations must be loaded to match the specific motor and operating parameters. Configuration data can be transferred using the keypad copy-and-restore function or backed up and written via Global Drive Control (GDC) PC software, with technical support available from ABC Industrial Parts for parameter transfer and spare unit integration.
Diagnostic oversight is provided via integrated status LEDs, including a green RUN LED for active operation and a red TRIP LED indicating fault conditions. Additional error identification is accessible via 7-segment fault codes on the 8101 keypad or through status word reading over LECOM and fieldbus connections. Standard error codes indicate specific operational conditions such as overcurrent (OC1), DC bus overvoltage (OU), undervoltage (LU), or heatsink overtemperature (OH). While parameter mismatches or transient faults can be resolved by reloading parameter sets or cycling power, internal component faults or EEPROM memory errors (EE) point to hardware failure. In such instances, field servicing internal boards is not practical, making an exchange unit or repair service from ABC Industrial Parts the recommended solution to minimize equipment downtime.
Technical Specifications
| Rated Power | 2.2 kW |
| Supply Voltage Range | 320 - 528 V AC |
| Nominal Input Current | 6 A |
| Continuous Output Current | 5.6 A |
| Output Voltage Range | 0 - 400 V AC |
| Output Frequency Range | 0 - 480 Hz |
| Switching Frequency | 8 kHz |
| Control Method | V/f Control / Sensorless Vector Control |
| Protection Rating | IP20 |
Programming and Configuration
Parameterization of the Lenze 8104_E.4G.12 inverter can be performed using either the plug-in Operating Module 8101 keypad or Lenze Global Drive Control (GDC) PC software. The 8101 keypad attaches directly to expansion slot X1, allowing technicians to modify operating parameters, set acceleration and deceleration ramps, and select control modes directly at the drive.
For computer-based commissioning and backup management, GDC software provides real-time parameter inspection and configuration file storage. Parameters can be copied from an operational inverter to the 8101 keypad memory and subsequently restored into a replacement drive, streamlining setup during maintenance events. When transferring configurations between units, ensure the parameter set matches the drive variant and firmware structure to avoid parameter errors.
Communication and System Integration
The Lenze 8100 series incorporates an integrated expansion interface designated as Slot X1, which accepts optional communication modules for fieldbus integration. Supported modules include the LECOM Module 2102 IB for serial LECOM-A/B communication, enabling point-to-point or networked connections to host controllers and software setup utilities.
For automated industrial networks, the drive supports fieldbus communication via PROFIBUS Modules 2131 IB and 2133 IB, as well as CANopen Modules 2171 IB and 2172 IB. These modules fit directly into slot X1, allowing the drive to receive speed references, control commands, and transmit internal status words back to the central PLC.
Diagnostics and Status Indication
The drive features dual LED status indicators located on the front panel. A solid green RUN LED confirms active inverter output during normal operation, while a solid red TRIP LED alerts personnel to a protective fault shutoff. Further diagnostic information is available via 7-segment fault codes when using the 8101 operating keypad.
In addition to local visual displays, diagnostic status words can be monitored over LECOM or fieldbus interfaces, as well as through Global Drive Control (GDC) PC software for real-time operational analysis and troubleshooting.
Status LED Indicators
| LED | Color/Status | Meaning |
|---|---|---|
| RUN | Green - Solid | Normal inverter operation / output active |
| TRIP | Red - Solid | Fault / trip condition detected |
Replacement and Spare Part Considerations
As a legacy component, the Lenze 8104_E.4G.12 serves primarily as a direct replacement unit for existing installations in conveyor systems, material handling lines, packaging machinery, and industrial pumping stations. Replacing a failed drive with an identical unit avoids panel layout modifications and major wiring changes.
Prior to putting a replacement inverter into operation, the complete parameter dataset from the original drive must be transferred using the 8101 keypad or GDC software. If full system modernization is planned rather than a spare replacement, Lenze recommends transitioning to the 8200 vector or 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 | Short circuit or extreme overcurrent detected at the inverter output. | Short circuit in motor cable or motor winding; excessive acceleration rate; motor ground fault. | Check motor cable and motor windings for short circuit; verify acceleration time settings. |
| OC5 | I2t Overload | Inverter output current exceeded continuous rating for too long. | Mechanical overload on motor shaft; motor undersized for load; acceleration ramp too steep. | Check load mechanics; adjust acceleration time or load requirements. |
| OU | Overvoltage DC Bus | DC bus voltage exceeds upper threshold voltage. | Regenerative motor energy during deceleration too high; deceleration ramp too fast; mains supply overvoltage. | Extend deceleration time; install braking resistor / brake chopper; check mains input voltage. |
| LU | Undervoltage DC Bus | DC bus voltage dropped below minimum threshold. | Mains supply failure or phase loss; input supply voltage too low; transient power drop. | Check mains voltage input levels and fuses; verify line connections. |
| OH | Overtemperature Heatsink | Inverter internal heatsink temperature exceeded maximum limit (>85 °C). | Inadequate cooling airflow; ambient temperature too high; cooling fan failure; dirty heatsink fins. | Clean heatsink cooling fins; verify ambient air temperature and enclosure ventilation. |
| OH4 | Motor Overtemperature | Thermal motor protection (PTC / thermal sensor) triggered. | Motor thermal overload; insufficient motor cooling; PTC sensor cable broken or disconnected. | Allow motor to cool down; check motor loading; check PTC sensor connections at control terminals. |
| LP | Mains Phase Loss | Loss of one phase in 3-phase input power supply. | Blown mains fuse; loose input power connection; unbalanced mains supply. | Check input line voltages across all three phases; verify line fuses and cabling. |
| EE | EEPROM Memory Error | Internal non-volatile memory read/write failure or corrupted internal data. | Internal hardware failure; severe electromagnetic interference during write access. | Internal hardware fault — perform factory reset; if fault persists, unit is defective and requires return for repair. |
| Pr | Parameter Error | Parameter set stored in inverter is invalid or incompatible. | Incompatible parameter set transfer from different firmware or inverter variant. | Reload valid parameter set or restore inverter default factory parameters. |
| CE0 | Communication Error LECOM | Communication breakdown between inverter and LECOM interface or keypad. | Loose module attachment; faulty connection cable; incorrect baud rate configuration. | Check seating of module in slot X1; check cable connections and serial port settings. |
| CE1 | Communication Error CAN | CANbus communication error or timeout. | Missing bus termination resistors; incorrect node address or baud rate; CAN cable fault. | Check CANbus physical connection, node addresses, baud rate, and termination. |
Frequently Asked Questions
What software is used to configure the Lenze 8104_E.4G.12 frequency inverter?
The inverter can be configured using Lenze Global Drive Control (GDC) PC software or locally via the plug-in Operating Module 8101 keypad.
Can parameters be copied directly from an old Lenze 8104_E.4G.12 drive to a replacement unit?
Yes, parameter sets can be saved into the 8101 operating keypad memory or backed up via GDC software and then written directly to the replacement inverter.
Which communication fieldbus modules are supported by the 8104_E.4G.12?
Slot X1 accepts the LECOM Module 2102 IB, PROFIBUS Modules 2131 IB / 2133 IB, and CANopen Modules 2171 IB / 2172 IB.
What does error code EE mean on the Lenze 8104_E.4G.12 inverter?
Error code EE indicates an EEPROM memory read/write failure or corrupted internal data. A factory reset should be attempted; if the fault persists, internal hardware damage is present.
What is the continuous output current rating for this model?
The Lenze 8104_E.4G.12 provides a continuous output current of 5.6 A with a 2.2 kW power rating on a 320 to 528 V AC 3-phase supply.
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