Lenze EVS9327-ESV004 9300 Series 15 kW Servo Inverter
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Product Information
The Lenze EVS9327-ESV004 (model EVS9327-ES V004) is a 15 kW IP20-rated servo inverter belonging to the 9300 series of servo controllers. Designed for precise positioning, torque regulation, and dynamic motor speed control in automated machinery, this drive operates from a 3-phase AC supply voltage ranging between 320 V and 528 V. It delivers a continuous rated output current of 32 A at an 8 kHz switching frequency, with a peak current capability of 48 A and a maximum output frequency of 480 Hz. Its compact IP20 panel enclosure is intended for mounting directly inside protective industrial control cabinets.
Connecting and commissioning a replacement unit involves matching both hardware interfaces and parameter settings. The EVS9327-ESV004 features dedicated terminal connections including Sub-D connectors for resolvers on terminal X7 and incremental encoders on terminal X8, as well as simulated encoder output capabilities. For network connectivity, an onboard CAN system bus enables direct multi-axis drive synchronization, while the front Automation Interface (AIF) slot accepts optional fieldbus modules such as PROFIBUS-DP (EMF2133IB or EMF2131IB) and INTERBUS (EMF2111IB or EMF2112IB). A replacement drive is rarely plug-and-run; parameter sets must be transferred to the replacement unit's internal non-volatile EEPROM—which stores up to four switchable parameter sets—using the Keypad XT (9371BB) or Lenze Global Drive Control (GDC) software alongside a PC System Bus Adapter (EMF2173IB or EMF2177IB). ABC Industrial Parts supplies pre-tested replacement units to support rapid machine recovery.
Operational status and troubleshooting are indicated via three front panel LEDs and software diagnostic tools. A solid or flashing Green LED indicates normal ready status, a Yellow LED denotes an active impulse inhibit or warning condition, and a Red LED alerts operators to an active fault or TRIP state. Detailed error codes and historical events can be examined using the Keypad XT or via GDC software through the diagnostic history buffer (Code C0168). Faults such as overcurrent (OC1), DC bus overvoltage (OU), and communication loss (CE0, CE1) can often be resolved by inspecting motor insulation, braking resistors, or fieldbus connections. However, internal hardware errors such as H05 or persistent EEPROM corruption (EEr) reflect internal board faults that are not field-serviceable, making drive replacement or exchange through ABC Industrial Parts the fastest route back to production.
Technical Specifications
| Manufacturer | Lenze |
| Part Number | EVS9327-ESV004 |
| Model / Type | EVS9327-ES V004 |
| Component Type | Servo Inverter |
| Product Family | 9300 |
| Rated Power | 15 kW |
| Supply Voltage Range | 320 V AC – 528 V AC |
| Rated Output Current | 32 A |
| Maximum Output Current | 48 A |
| Switching Frequency | 8 kHz |
| Maximum Output Frequency | 480 Hz |
| Protection Rating | IP20 |
| Integrated System Bus | CAN System Bus (up to 500 kbit/s) |
Programming and Configuration
Parameter management and commissioning for the Lenze EVS9327-ESV004 are performed through Lenze Global Drive Control (GDC) software or via the pluggable Keypad XT (9371BB). The inverter contains internal non-volatile EEPROM memory capable of retaining up to four individual, switchable parameter sets. This multi-dataset architecture allows flexible machine configuration changes and simplifies complete drive backup.
When replacing an existing unit, saved parameter files can be downloaded directly from GDC using a PC System Bus Adapter (EMF2173IB or EMF2177IB) or transferred via the Keypad XT parameter memory function. If an internal EEPROM memory fault (EEr) occurs, restoring factory default settings using code C0002 followed by reloading saved parameters restores operational integrity.
Communication and System Integration
The EVS9327-ESV004 incorporates an onboard CAN system bus interface operating at transmission speeds up to 500 kbit/s. This integrated bus allows cross-communication and real-time multi-axis drive synchronization without requiring an additional master controller. Bus lines must be terminated with 120-ohm resistors at both network ends to prevent communication errors.
Broader fieldbus integration is achieved through the modular front Automation Interface (AIF) slot. Depending on network requirements, optional communication modules such as PROFIBUS-DP (EMF2133IB or EMF2131IB), INTERBUS (EMF2111IB or EMF2112IB), or LECOM RS232/RS485 can be inserted. Feedback integration is provided by terminal X7 for resolvers and terminal X8 for incremental encoders, alongside master frequency inputs and simulated encoder outputs.
Diagnostics and Status Indication
Visual diagnostics on the Lenze EVS9327-ESV004 are provided by three status LEDs located on the front of the unit. Detailed system monitoring is performed via the Keypad XT (9371BB) or GDC software, which provides live parameter inspection, status word analysis, and access to the diagnostic history buffer logged at code C0168.
Status LED Indicators
| LED | Color/Status | Meaning |
|---|---|---|
| Red LED | Red - Solid/Flashing | Fault / TRIP condition active |
| Green LED | Green - Solid/Flashing | Ready / Normal operation status |
| Yellow LED | Yellow - Solid/Flashing | Impulse inhibit / Warning active |
Replacement and Spare Part Considerations
When replacing a Lenze EVS9327-ESV004, ensure the power rating (15 kW, 32 A continuous current) matches the existing panel layout and motor setup. Any optional AIF fieldbus expansion module, such as a PROFIBUS-DP card (EMF2133IB or EMF2131IB) or INTERBUS card (EMF2111IB or EMF2112IB), must be swapped from the original unit to the replacement inverter and properly seated.
Before applying power to run the machine, the replacement drive requires complete parameter restoration into its internal EEPROM. Use Global Drive Control (GDC) software or the Keypad XT (9371BB) to write the backed-up parameter sets. Verify that motor feedback cables connected to terminal X7 (resolver) or X8 (encoder) are securely fastened with correct shielding to avoid feedback errors (Sd2, Sd3).
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 | Instantaneous power stage overcurrent detection. | Short circuit on motor terminals, ground fault, acceleration ramp time too short, or motor overload. | Check motor wiring and isolation, increase acceleration time, check motor size relative to drive. |
| OC2 | Earth fault | Ground fault / earth current threshold exceeded. | Motor cable insulation breakdown, ground fault in motor winding, or excessive cable capacitance. | Check motor cable and motor windings for insulation faults to ground. |
| OC5 | Ixt overload | Drive continuous overload limit reached. | Drive operated above rated continuous current for extended period. | Reduce mechanical load, increase ramp times, or check drive dimensioning. |
| OU | Overvoltage DC bus | DC bus voltage exceeded upper trip threshold. | Excessive regenerative energy during deceleration, deceleration ramp too short, brake chopper defective, or braking resistor disconnected/broken. | Extend deceleration time, connect/inspect external braking resistor and brake module. |
| LU | Undervoltage DC bus | DC bus voltage dropped below minimum operating limit. | Mains supply voltage failure, supply phase loss, or main contactor open during operation. | Check AC mains supply voltage, line fuses, and main contactor circuit. |
| OH | Heatsink overtemperature | Inverter heatsink temperature exceeds limit. | Inadequate cabinet cooling, heatsink fan failure, ambient temperature too high, or heatsink clogged with dust. | Clean heatsink fins, check cabinet fan operation and ventilation airflow. |
| OH4 | Motor overtemperature | Motor temperature sensor (PTC/KTY) triggered trip. | Motor thermal overload, cooling fan failure on motor, broken sensor cable, or wrong sensor configuration. | Allow motor to cool down, inspect motor fan, check sensor wiring on terminals T1/T2. |
| OH7 | Interior temperature high | Temperature inside drive enclosure exceeded upper threshold. | Ambient temperature in electrical cabinet too high or internal fan defective. | Improve electrical cabinet cooling. |
| OH8 | Motor I2t overload | Calculated motor I²t thermal utilization limit reached. | Continuous motor operation at high torque and low speed. | Check motor loading, verify motor I²t parameter settings in drive. |
| CE0 / Ce0 | AIF communication error | Communication failure between inverter and AIF plug-in module. | Automation module improperly seated, loose connection, or defective fieldbus module. | Check seating of module in AIF slot, inspect fieldbus master/wiring. |
| CE1 / Ce1 | System Bus communication error | CAN system bus communication telegram failure. | Interrupted bus cable, incorrect termination resistor (120 Ohm), or node offline. | Inspect CAN bus wiring, shield connection, and termination resistors. |
| CE4 / Ce4 | System Bus BUS-OFF | CAN controller entered BUS-OFF state due to excessive error frames. | Severe EMI/noise on CAN bus, baud rate mismatch, short circuit on CAN_H / CAN_L. | Check CAN cabling, grounding/shielding, baud rate settings across all bus nodes. |
| H05 | Internal hardware fault | Internal control board or power unit hardware failure detected. | Internal component failure, board-level power supply fault. | Internal hardware fault — return unit for repair or replace inverter. |
| EEr | EEPROM memory fault | Internal EEPROM checksum error during parameter read/write. | Internal EEPROM corrupted or end of write endurance. | Reload factory default settings (C0002) and write parameters back to EEPROM; if fault persists, replace unit. |
| Sd2 | Resolver fault | Resolver signal evaluation failure on terminal X7. | Resolver cable broken, plug disconnected, or defective resolver. | Check resolver cable wiring and connector on X7. |
| Sd3 | Encoder track error | Encoder signal track failure or missing pulses on input X8. | Incremental encoder cable fault, channel A/B missing, or encoder supply missing. | Verify encoder connection, check supply voltage to encoder and cable shielding. |
| LP1 | Mains phase failure | Failure of one supply phase on the mains input. | Blown main fuse, unbalanced supply phase, broken supply line. | Inspect 3-phase input supply voltage and supply fuses. |
| NMAX | Speed threshold exceeded | Actual motor speed exceeded maximum permissible limit. | Incorrect speed controller tuning, overshooting, or external load driving motor. | Check speed controller gains, speed feedback scaling, and overspeed limit parameter settings. |
Frequently Asked Questions
How do I back up or transfer parameters on the Lenze EVS9327-ESV004?
Parameters can be transferred using the Keypad XT (9371BB) module or via Lenze Global Drive Control (GDC) software using a PC System Bus Adapter (EMF2173IB or EMF2177IB). Up to four switchable parameter sets are stored directly in the inverter's internal EEPROM.
What fieldbus communication options are supported by this drive?
In addition to the integrated CAN system bus operating up to 500 kbit/s, the drive features a front Automation Interface (AIF) slot that supports plug-in modules such as PROFIBUS-DP (EMF2133IB / EMF2131IB), INTERBUS (EMF2111IB / EMF2112IB), and LECOM RS232/RS485.
What do the front panel LED indicators mean on the EVS9327-ESV004?
The Green LED indicates normal operation or ready status, the Yellow LED signals an active warning or impulse inhibit state, and the Red LED alerts operators to an active fault or TRIP condition.
How should fault code H05 or EEr be addressed?
Fault code H05 indicates an internal hardware failure on the control or power board requiring drive repair or replacement. Fault code EEr indicates an EEPROM memory fault; attempting a factory reset via code C0002 followed by reloading parameters may clear the condition, but persistent errors require drive replacement.
Which motor feedback interfaces are available on the EVS9327-ESV004?
The drive includes terminal X7 for resolver feedback and terminal X8 for incremental encoder feedback, alongside master frequency inputs and simulated encoder outputs for controller integration.
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