Lenze EVS9322-ES 9300 Series 0.75kW Servo Inverter
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Product Information
The Lenze EVS9322-ES is a panel-mounted 0.75 kW servo inverter from the Lenze 9300 Series, engineered for precise vector control of permanent magnet synchronous servo motors and asynchronous AC motors. Housed in a compact IP20 enclosure, this unit operates on a 3-phase supply voltage ranging from 320 V AC to 528 V AC, delivering a rated continuous output current of 2.5 A at 400/480 V and a peak overload output of 3.75 A for up to 60 seconds. Utilizing digital field-oriented vector control alongside integrated position, speed, and torque control loops with configurable function blocks, the controller provides dynamic performance across applications in packaging machinery, textile manufacturing, and material handling systems.
Connecting the drive into an existing control cabinet relies on fixed terminal points and dedicated feedback ports, including a resolver input at connector X7 and incremental encoder input/output access across connectors X8 and X9. For machine integration, the unit provides four digital inputs, two digital outputs, two differential analog inputs, and two analog outputs, as well as an onboard CAN system bus operating up to 500 kbit/s. High-level network interfaces are accommodated via the Automation Interface (AIF) slot using option modules such as the PROFIBUS-DP module EMF2133IB. When commissioning a replacement drive, parameter profiles must be transferred from the original unit to match the application setup. Data can be uploaded and configured using Lenze Global Drive Control (GDC) software version 4.0 or higher connected via an EMF2173IB system bus adapter, or copied directly via four internal EEPROM profiles using an EMZ9371BB keypad operating module. Parameter extraction and configuration migration services from ABC Industrial Parts help streamline spare-unit installation.
Real-time diagnostic monitoring is handled directly on the front panel via three status LEDs indicating DRIVE ERROR, DRIVE READY, and IMPULSE ENABLE states. Additional diagnostic tracking is accessible through parameter C0168, which logs the last four TRIP events, or via live monitoring over the system bus control and status words. If faults such as overvoltage (OU), short circuit (OC1), resolver loss (E1), or CAN communication failure (CE1) occur, the drive halts active voltage output to protect hardware and connected motors. Where internal electronic faults like EEPROM corruption (EE) or hardware failure (H05) arise, the board-level circuitry cannot be serviced in the field. In these instances, obtaining a fully tested replacement or requesting a hardware repair through ABC Industrial Parts offers the most efficient path to restoring machine productivity.
Technical Specifications
| Manufacturer | Lenze |
| Part Number | EVS9322-ES |
| Model / Type | 9300 Series Servo Inverter |
| Component Type | Servo Drive |
| Rated Power | 0.75 kW |
| Supply Voltage Range | 320 - 528 V AC |
| Output Voltage Range | 0 - 480 V AC |
| Continuous Output Current | 2.5 A |
| Peak Output Current | 3.75 A |
| Nominal Switching Frequency | 8 kHz |
| Digital Inputs | 4 |
| Digital Outputs | 2 |
| Analog Inputs | 2 (Differential) |
| Analog Outputs | 2 |
| Ingress Protection Rating | IP20 |
Programming and Configuration
Configuring the Lenze EVS9322-ES servo drive involves defining motor control parameters, feedback options, and control loop structures using Lenze Global Drive Control (GDC) software version 4.0 or higher. Connection between a PC and the drive is established through a Lenze PC system bus adapter EMF2173IB plugged into the integrated CAN system bus or using an Automation Interface module. The software allows technicians to customize internal function blocks, tune speed and position control loops, and download complete parameter sets directly to the drive.
For standalone setup and backup management without a PC, the unit supports the optional EMZ9371BB keypad operating module. Up to four complete parameter profiles can be stored within the internal non-volatile EEPROM memory. This internal storage structure allows users to switch configurations or back up functional parameter setups prior to hardware replacement. Resetting the drive to original factory settings can be performed using parameter C0002 when clearing corrupted memory states.
Communication and System Integration
The Lenze EVS9322-ES features an integrated CAN system bus interface capable of communication speeds up to 500 kbit/s. This bus interface enables peer-to-peer drive synchronization and direct data exchange between multiple 9300 series drives without requiring external master controllers. Proper physical bus setup requires 120-ohm termination resistors at each end of the CAN network and correct baud rate configuration via parameter C0352.
For higher-level industrial network architectures, the inverter includes an Automation Interface (AIF) slot designed to accept specialized communication modules. Adding modules such as the EMF2133IB PROFIBUS-DP adapter enables seamless integration into PLC-based control systems, transferring status words, control commands, and actual speed or position values across standard fieldbus protocols.
Diagnostics and Status Indication
The front panel of the EVS9322-ES includes three distinct LED indicators that provide instant visual feedback on operational status. The green DRIVE READY LED lights solid when control voltage is applied and flashes if the controller output is inhibited. The yellow IMPULSE ENABLE LED illuminates when power stage switching is active, indicating output voltage is present at the motor terminals. The red DRIVE ERROR LED lights solid whenever an active TRIP fault occurs.
Detailed diagnostic analysis can be performed online using the GDC software monitor or directly through the EMZ9371BB keypad module. Internal parameter C0168 maintains a fault history log storing the four most recent TRIP occurrences. Real-time control word and status word data transmitted over the system bus further assist higher-level PLCs in identifying drive status, communication dropouts, or motor feedback faults.
Status LED Indicators
| LED | Color/Status | Meaning |
|---|---|---|
| DRIVE ERROR | Red - Solid | Active TRIP fault condition present in the drive. |
| DRIVE READY | Green - Solid / Flashing | Inverter is powered and ready for operation; blinks if power supply is normal but controller inhibits active output. |
| IMPULSE ENABLE | Yellow - Solid | Power stage pulses enabled and active output phase voltage present. |
Replacement and Spare Part Considerations
When replacing a Lenze EVS9322-ES servo drive, verify that the replacement unit matches the full part number and continuous current rating of 2.5 A. Because drive parameters are application-specific, installing a new or exchange drive requires transferring the active parameter set using GDC software version 4.0 or higher, an EMF2173IB PC adapter, or an EMZ9371BB keypad with pre-saved EEPROM profiles.
Ensure all external feedback wiring and option modules are correctly seated before powering up. The resolver cable must be attached securely to connector X7, or incremental encoder signals to X8/X9. If fieldbus communications are used, transfer any plug-in AIF module (such as the EMF2133IB PROFIBUS-DP module) to the new unit and confirm that CAN bus baud rate settings in parameter C0352 and 120-ohm line termination resistors match original network specifications.
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 | Short circuit or extreme current peak detected at inverter motor terminals. | Short circuit in motor cable, short circuit in motor winding, motor power too large for drive size. | Inspect motor and cable connection for short circuit or ground fault; check motor sizing. |
| OC2 | Earth Fault | Ground fault detected on motor output phase. | Insulation failure in motor cable or motor winding to ground, excessively long unshielded motor cable. | Test insulation resistance of motor wiring and motor windings; check cable length. |
| OC5 | Ixt Overload | Inverter power stage overload limit exceeded. | Continuous operation above rated current, frequent high acceleration rates, mechanical blockage. | Reduce mechanical load or acceleration profile; verify motor sizing and acceleration ramp times. |
| OU | Overvoltage DC Bus | Intermediate DC bus voltage exceeded maximum allowable threshold. | Excessive regenerative energy during braking, brake chopper resistor disconnected or defective, deceleration ramp too short. | Extend deceleration time; check brake resistor wiring and resistance value. |
| LU | Undervoltage DC Bus | DC bus voltage fell below minimum operating threshold. | Mains supply line voltage drop, failure of mains power phase, defective mains input fuse. | Check AC mains supply voltage and line fuses. |
| OH | Heatsink Overheat | Drive heatsink temperature exceeded upper limit. | Ventilation flow obstructed, cooling fan failed or missing, ambient temperature excessive. | Clean heatsink cooling fins, verify cooling fan operation, check cabinet ventilation. |
| OH4 | Motor Temperature Overheat | Motor thermal sensor (PTC/KTY) triggered thermal alarm. | Motor overloaded, motor cooling fan failed, thermal sensor wiring broken. | Allow motor to cool; check motor load and thermal sensor connections on terminal T1/T2. |
| OH7 | Interior Overheat | Temperature inside drive housing exceeded upper limit. | Control cabinet internal temperature too high, fan failure. | Improve cabinet ventilation and cooling. |
| OH8 | Motor Overload (I²t) | Calculated motor I²t thermal utilization reached trip limit. | Motor running at continuous overcurrent without sufficient cooling. | Reduce continuous motor torque requirement; verify motor current setting in drive parameters. |
| CE0 | AIF Communication Fault | Communication failure between drive and plug-in module in AIF slot. | Loose module connection, fieldbus cable break, master controller stopped. | Verify module seating in AIF slot, inspect fieldbus connections and master status. |
| CE1 | System Bus (CAN) Fault | Communication error on integrated CAN system bus. | Missing bus termination resistors, wrong baud rate setting, wiring line break. | Check CAN bus wiring, 120 ohm termination resistors at bus ends, and baud rate setting in C0352. |
| EE | EEPROM Memory Error | Data corruption or checksum error detected in internal non-volatile parameter memory. | Internal hardware failure or power interruption during parameter write operation. | Internal hardware fault — reset parameters to factory defaults (C0002) and restore configuration; if error persists, return unit for repair. |
| E1 | Resolver Fault | Resolver feedback signal fault or cable disconnection detected on X7. | Resolver cable disconnected, broken wire, signal interference, defective resolver. | Inspect resolver cable, shielding, and connector X7. |
| E2 | Encoder Line Fault | Track error or missing pulses from incremental encoder on X8/X9. | Encoder cable defect, encoder supply failure, track A/B signal loss. | Check encoder wiring, power supply voltage, and shielding on X8/X9. |
| H05 | Internal Hardware Fault | Control board or internal power supply hardware failure detected during self-test. | Internal electronic components failure. | Internal hardware fault — return unit for repair or replace drive unit. |
| NMAX | Overspeed Fault | Motor speed exceeded maximum permissible limit set in parameters. | Unstable velocity control loop tuning, incorrect feedback scaling, external mechanical overspeed drive. | Check speed controller gains, encoder resolution settings, and mechanical load behavior. |
Frequently Asked Questions
What feedback devices are supported by the Lenze EVS9322-ES servo inverter?
The EVS9322-ES features integrated resolver feedback evaluation on connector X7 as well as incremental encoder input and output connections across connectors X8 and X9.
What software and hardware are required to program the EVS9322-ES?
Programming and parameter configuration require Lenze Global Drive Control (GDC) software version 4.0 or higher and a Lenze PC System Bus Adapter EMF2173IB. Alternatively, parameter profiles can be managed using the optional EMZ9371BB Keypad Operating Module.
How can I diagnose and resolve a CAN bus fault code CE1 on the drive?
A CE1 fault indicates a system bus communication error. Inspect the CAN bus cable connections, ensure 120-ohm termination resistors are installed at both physical ends of the bus line, and check that the baud rate in parameter C0352 matches network settings.
What do the front panel status LEDs on the EVS9322-ES indicate?
The green DRIVE READY LED indicates power status and output readiness, the yellow IMPULSE ENABLE LED shows that power stage pulses are active, and the solid red DRIVE ERROR LED signals an active TRIP fault condition.
How can I read the fault history on the EVS9322-ES servo drive?
The drive maintains an internal fault log accessible via parameter C0168, which records the last four TRIP events. Fault history can be viewed using the EMZ9371BB keypad or through the online diagnostic monitor in GDC software.
What options exist for integrating the EVS9322-ES into a fieldbus network?
The drive features an integrated CAN system bus running at up to 500 kbit/s. Additional fieldbus integration is accomplished by inserting plug-in option modules, such as the EMF2133IB PROFIBUS-DP module, into the Automation Interface (AIF) slot.
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