Lenze EVS9325-ES 9300 Series 5.5 kW Servo Drive
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Product Information
The Lenze EVS9325-ES is a 5.5 kW servo inverter from the 9300 Servo series engineered for precise motion control in automated manufacturing environments. Operating from a 3-phase AC supply voltage between 320 V and 528 V, this drive delivers a continuous output current of 13 A at an 8 kHz switching frequency, with a peak overload capacity of 19.5 A for up to 60 seconds. Utilizing field-oriented vector control, the unit manages both synchronous AC servo motors and asynchronous induction motors up to a maximum output frequency of 480 Hz. Designed with a 200 W power dissipation rating, it serves as a central controller in high-dynamic positioning applications across packaging lines, conveyor networks, textile machinery, and metal processing equipment.
Integrating a replacement EVS9325-ES requires establishing proper signal connections, feedback interfaces, and parameter alignment before commissioning. The module features an onboard CANopen system bus interface at connector X4, dedicated resolver inputs at terminal X7, and incremental or SinCos encoder inputs at terminal X8, alongside 4 digital inputs, 2 digital outputs, 2 analog inputs, and 2 analog outputs. Integrated Safe Torque Off (STO) capability is accessed via terminal RFR/X5, eliminating the need for external drive disconnect relays. Application configuration and parameter sets are saved in non-volatile internal EEPROM memory holding up to four parameter profiles. When swapping out a failed unit, technicians can clone configuration parameters directly using a pluggable Lenze Keypad XT module (EMZ9371BC) without requiring a PC, or perform complete backup transfers via Lenze Global Drive Control (GDC) software. ABC Industrial Parts supports maintenance teams with tested replacement units to restore machine operation efficiently.
Diagnostic feedback on the EVS9325-ES is provided through real-time panel status LEDs and internal status registers. A solid green READY LED indicates an active operational state, while a flashing green LED indicates a controller inhibit (IMP) or warning condition; a solid red TRIP LED confirms an active fault state with a disabled inverter output stage. Parameter code C0183 displays active operating status on the keypad, while code C0168 logs the last eight fault conditions complete with operational timestamps. Standard troubleshooting procedures involve verifying mains phase voltages across input terminals L1, L2, and L3, evaluating DC bus conditions, inspecting resolver signals at terminal X7 or encoder signals at X8, and verifying CANbus termination resistors. If hardware faults such as internal EEPROM memory degradation (EER/EEW), overcurrent trips without connected motor cables (OC1), or internal circuit defects (H05) occur, the internal electronics cannot be serviced in the field, making a tested replacement unit or professional repair through ABC Industrial Parts the fastest route back to production.
Technical Specifications
| Manufacturer | Lenze |
| Part Number | EVS9325-ES |
| Model / Type | Servo Inverter |
| Product Family | 9300 Servo |
| Rated Power | 5.5 kW |
| Supply Voltage Range | 3 AC 320 V - 528 V |
| Rated Output Current | 13 A |
| Maximum Peak Output Current | 19.5 A (60 s) |
| Output Voltage | 0 - U_mains V |
| Maximum Output Frequency | 480 Hz |
| Switching Frequency | 8 kHz |
| Power Dissipation | 200 W |
| Digital I/O Channels | 4 Inputs / 2 Outputs |
| Analog I/O Channels | 2 Inputs / 2 Outputs |
Programming and Configuration
Configuration and parameter setup for the Lenze EVS9325-ES are managed through Lenze Global Drive Control (GDC) software or directly on the unit via the pluggable Keypad XT (EMZ9371BC). The servo drive maintains four independent internal parameter sets stored in non-volatile EEPROM memory, allowing flexible operational setups for complex motion profiles. Key parameters include speed controller tuning, thermal motor protection thresholds, acceleration and deceleration ramps, and feedback calibration settings.
For fast field replacements, the Keypad XT module allows technicians to upload complete parameter sets from an existing drive and copy them directly into a replacement EVS9325-ES without requiring a laptop or software interface. If parameter memory becomes corrupted, restoring factory default settings is accomplished by setting parameter code C0002 to 1, after which custom machine configuration profiles can be reloaded.
Communication and System Integration
The EVS9325-ES features an onboard CANopen-compatible System Bus (CAN) at interface X4, enabling high-speed multi-axis communication, parameter synchronization, and real-time motion commands between connected 9300 series drives and host controllers. Correct line termination using 120-ohm resistors at both ends of the CAN network and matched baud rate settings across nodes are required for stable operation.
To integrate with alternative industrial automation networks, the drive includes a modular Automation Interface Slot (Slot A). This slot accepts communication option cards such as PROFIBUS-DP (EMF2133IB), EtherCAT (EMF2177IB), INTERBUS (EMF2171IB), and LECOM RS-232/RS-485 cards (EMF2102IB / EMF2102IC). These modules allow the drive to communicate directly with higher-level PLCs and central control systems.
Diagnostics and Status Indication
Front-mounted status LEDs provide immediate visual indication of the operating condition of the EVS9325-ES. The green READY LED remains solid during normal operation and flashes when the controller is inhibited or experiencing a warning state. The red TRIP LED illuminates solid when a fault state disables the inverter output stage.
Detailed diagnostic data is accessible through parameter codes displayed on the Keypad XT or within GDC software. Parameter code C0183 shows real-time drive operating status, while code C0168 stores a history of the last eight trip codes along with operational timestamps for post-fault analysis.
Status LED Indicators
| LED | Color/Status | Meaning |
|---|---|---|
| Red LED (TRIP) | Red - Solid | Fault state active / drive tripped (TRIP condition). Output stage disabled. |
| Green LED (READY) | Green - Solid / Flashing | Operational / Controller enable state. Flashing green indicates controller inhibited (IMP) or warning state. |
Replacement and Spare Part Considerations
When replacing a Lenze EVS9325-ES, ensure that the power rating of 5.5 kW and output current rating of 13 A match the original machine specifications. Check that any installed Slot A communication card (such as PROFIBUS or EtherCAT) is transferred to the replacement unit and that node addresses and fieldbus settings are verified prior to restarting the system.
Before powering up the replacement drive, parameter settings must be transferred from the original unit using either the Keypad XT module or GDC software backup files. Verify wiring connections at terminal RFR/X5 for the Safe Torque Off (STO) circuit, as an open safety circuit will prevent controller enable. Inspect feedback connections at terminals X7 (resolver) and X8 (encoder) to prevent position feedback errors during commissioning.
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 | Drive heatsink temperature exceeded maximum safety threshold. | Ambient temperature too high, cooling fan failed or clogged, excessive continuous load, insufficient panel ventilation. | Check cabinet ventilation and cooling fans; clean heatsink; reduce switching frequency or motor load. |
| OH3 | Interior Overtemperature | Temperature inside drive housing exceeded permissible limit. | Control section ambient temperature inside drive enclosure too high. | Improve enclosure cooling; verify internal cabinet airflow. |
| OH4 | Motor Overtemperature (PTC/KTY) | Motor temperature sensor triggered overtemperature threshold. | Motor thermal overload, KTY/PTC sensor wire broken, insufficient motor cooling. | Check motor mechanical load and temperature; verify sensor connections at terminals T1/T2. |
| OH7 | Motor I2t Overtemperature | Thermal motor utilization model (I2t calculation) exceeded limit. | Continuous operation at low speed under high torque, motor overloaded. | Reduce motor load; check thermal motor parameter settings. |
| OU | DC Bus Overvoltage | DC bus voltage exceeded upper limit. | Excessive regenerative energy during deceleration; deceleration ramp too short; brake chopper or braking resistor faulty/disconnected. | Extend deceleration times; verify external braking resistor value and connection; inspect internal brake transistor. |
| LU | DC Bus Undervoltage | DC link voltage fell below threshold. | Mains supply voltage drop or failure; power input phase loss; main contactor open under load. | Check mains line voltage, line fuses, line contactor, and power cabling. |
| OC1 | Short Circuit / Overcurrent | Instantaneous overcurrent detection in inverter output stage. | Short circuit between output phases or to earth; motor insulation breakdown; damaged power module. | Inspect motor cables and motor insulation with megohmmeter. If error persists with motor cables disconnected, internal power module (IGBT) failure requires repair/replacement. |
| OC2 | Earth Fault | Earth/ground fault current detected on output terminals. | Motor cable capacitance too high, ground fault in motor winding or cable. | Check motor and output wiring for ground faults; ensure total shielded motor cable length is within specification. |
| OC5 | I*t Overload | Continuous current limit exceeded for an extended duration. | Mechanical jam or acceleration rate too aggressive for drive capacity. | Check mechanical drive train for binding; increase acceleration ramp times. |
| Sd2 | Resolver Fault | Signal loss or track error on resolver feedback interface X7. | Resolver cable disconnected, broken shield, open trace, or faulty resolver sensor. | Inspect resolver wiring and connector X7; check resolver signals and shield ground connection. |
| Sd3 | Encoder Signal Fault | Encoder signal track fault on incremental/SinCos input X8. | Encoder cable defect, missing pulse signal, supply voltage to encoder interrupted. | Check encoder cable, connections, and power supply voltage at terminal X8. |
| CE0 | System Bus (CAN) Communication Error | Communication failure or time-out on integrated CAN system bus X4. | Bus cable interrupted, termination resistors missing (120 Ohm), incorrect baud rate setting. | Verify CANbus line wiring, termination resistors at both bus ends, and CAN master/slave node IDs. |
| CE1 | AIF Interface Communication Timeout | Communication interrupt between drive and option module installed in Slot A. | Fieldbus communication timeout (e.g., PROFIBUS PLC stop, disconnected network cable). | Check network status on fieldbus module LED; check PLC program state and network cabling. |
| EER | EEPROM Read Fault | Internal EEPROM data read error upon boot-up. | Corrupted parameter memory, internal memory chip failure. | Reload factory default parameters (C0002 = 1). Internal hardware failure — return unit for service if default parameters cannot be saved. |
| EEW | EEPROM Write Fault | Unable to write parameters to internal non-volatile EEPROM. | Internal memory wear-out or hardware fault. | Power cycle drive. Internal control board component fault — return unit for repair if persistent. |
| H05 | Internal Hardware Error | Control board or internal power supply module failure. | Internal circuit defect or hardware component failure. | Internal hardware fault — requires return for repair or unit replacement. |
| LP1 | Mains Phase Failure | Single-phase loss on 3-phase mains supply voltage. | Blown mains fuse, loose wiring on line input terminals L1, L2, or L3. | Check line phase voltages and input line fuses. |
| NMAX | Speed Limit Exceeded | Actual motor speed exceeded maximum configured limit (1.25 x C0011). | Incorrect speed controller tuning, driving load overhauling motor. | Check speed controller parameter settings and load profile. |
Frequently Asked Questions
How do I transfer parameter settings to a replacement EVS9325-ES drive?
Parameter settings can be cloned without a computer using the Lenze Keypad XT (EMZ9371BC) by saving the parameter set from the original drive and downloading it to the replacement unit. Alternatively, parameters can be transferred using Lenze Global Drive Control (GDC) software via a PC serial connection.
What feedback devices are compatible with the Lenze EVS9325-ES?
The EVS9325-ES includes a resolver feedback interface at terminal X7 and an incremental or SinCos encoder feedback interface at terminal X8, supporting feedback for both synchronous brushless AC servo motors and asynchronous induction motors.
How is safety implemented on the EVS9325-ES servo inverter?
The drive features integrated Safe Torque Off (STO) functional safety controlled via terminal RFR/X5, which directly disables output pulses to the motor without needing external main power contactors.
Which fieldbus networks can be integrated into the EVS9325-ES?
The EVS9325-ES includes an onboard CANopen system bus (X4) and an Automation Interface Slot (Slot A) that accepts option cards for PROFIBUS-DP (EMF2133IB), EtherCAT (EMF2177IB), INTERBUS (EMF2171IB), and LECOM RS-232/RS-485 (EMF2102IB / EMF2102IC).
What does a solid red LED trip light indicate on the EVS9325-ES?
A solid red TRIP LED indicates an active fault condition that has disabled the inverter output stage. Specific fault codes can be reviewed using parameter code C0168 on the Keypad XT display or via GDC software.
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