Lenze EVS9326-EK 9300 Servo Cam Profiler Controller
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Product Information
The Lenze EVS9326-EK is an 11 kW servo controller engineered for complex, multi-axis motion applications requiring precise electronic cam profile execution. Belonging to the Lenze 9300 Servo family, this 9300 Servo Cam Profiler drive replaces mechanical cams with software-driven motion profiles, enabling rapid product changeovers and smooth acceleration curves in machinery such as flying shears, packaging lines, and printing presses. Constructed inside an IP20 enclosure, the unit operates from a three-phase mains input ranging from 320 V AC to 528 V AC at 45 to 65 Hz. It supplies a continuous output current of 23.5 A with a peak current capability of 35.3 A (150 percent rated current) for up to 60 seconds, driving AC servo motors across an output frequency range of 0 to 480 Hz at an 8 kHz switching frequency.
Interface options on the drive accommodate feedback signals and distributed control networks. Motor feedback connects via resolver input at connector X7 or multi-protocol encoder inputs (incremental, SinCos, EnDat, or SSI absolute encoders) at connector X8. Inter-drive synchronization is handled by an integrated CAN system bus on connector X4 operating at transmission speeds up to 500 kbit/s, while open option slot X1 accepts plug-in fieldbus adapters including PROFIBUS DP and CANopen. Commissioning a replacement unit involves transferring parameters and cam curve data stored in internal non-volatile EEPROM memory. A replacement module is rarely plug-and-run; parameter cloning and software transfer using Lenze Global Drive Control (GDC) software or the EMZ9371BC operating keypad are required to match the original drive's configuration. Technical support from ABC Industrial Parts can assist in preparing replacement drives and managing parameter migration.
Local status indication relies on built-in LEDs, including a solid green LED for operational ready status and a red LED indicating fault or trip conditions. Detailed diagnostics, error logs, and system bus registers are accessible using the EMZ9371BC keypad or through GDC software via diagnostic parameter C0009. Basic fault checks include inspecting mains power on terminals L1, L2, and L3, checking DC link voltage thresholds, evaluating feedback wiring at connectors X7 and X8, and verifying bus termination resistors on system bus X4. Internal microprocessor errors, memory corruptions, or gate-driver board faults cannot be serviced in the field; installing a fully tested exchange controller or using professional repair services through ABC Industrial Parts provides a direct solution for restoring machine operation.
Technical Specifications
| Manufacturer | Lenze |
| Part Number | EVS9326-EK |
| Model / Type | 9300 Servo Cam Profiler |
| Component Type | Servo Controller |
| Rated Power | 11 kW |
| Supply Voltage Range | 320 - 528 V AC |
| Supply Frequency | 45 - 65 Hz |
| Rated Output Current | 23.5 A |
| Maximum Output Current | 35.3 A (150% for 60 s) |
| Output Frequency Range | 0 - 480 Hz |
| Switching Frequency | 8 kHz |
| Integrated System Bus | CAN (500 kbit/s) |
| Protection Rating | IP20 |
Programming and Configuration
The EVS9326-EK utilizes non-volatile internal EEPROM memory to store operation parameters, drive settings, and electronic cam profile tables. Motion profiles and operational parameters are configured using Lenze Global Drive Control (GDC) software or the plug-in EMZ9371BC control keypad. Using GDC, engineers can create custom interpolation tables, define motion profiles for cam indexing or flying shears, and adjust loop gains.
When commissioning or replacing a controller, complete parameter cloning can be performed via keypad copy functions or software backup restore. Restoring factory default settings is executed through parameter C0002. If a parameter mismatch or corrupted parameter set occurs on power-up (indicated by error code C0013), reloading the master configuration file or re-downloading the cam profile table via GDC clears the condition and restores valid drive execution.
Communication and System Integration
System integration relies on both built-in interfaces and optional fieldbus modules. An integrated CAN system bus at connector X4 provides real-time cross-axis communication at speeds up to 500 kbit/s. This system bus links master and slave axes for precise speed and position synchronization without requiring external controller hardware. Proper line termination using 120 Ohm resistors across the physical ends of the CAN bus is mandatory to prevent communication errors.
For higher-level PLC network integration, the drive features expansion slot X1. This slot accommodates communication cards including the EMF2131IB PROFIBUS DP module, EMF2175IB CANopen module, DeviceNet interfaces, or INTERBUS cards. Network parameters, node addresses, and fieldbus diagnostics are configured independently or managed via system registers monitored under parameter C0009.
Diagnostics and Status Indication
Visual status indication on the front panel provides instant operational feedback through two dedicated LEDs. The green 'Ready' LED signals drive status, illuminating solid when the control logic is active and ready for enable commands. The red 'Fault' LED illuminates solid or flashes during trip conditions, indicating active hardware or software errors.
Detailed troubleshooting is supported through the EMZ9371BC keypad, which displays plain-text error descriptions and specific fault codes. System diagnostic parameters, fault history logs, and realtime status registers are accessible through connected Global Drive Control (GDC) software or monitored via CAN system bus register C0009.
Status LED Indicators
| LED | Color/Status | Meaning |
|---|---|---|
| Ready | Green - Solid | Operational state indicator: lit green when drive is ready for operation or enabled. |
| Fault | Red - Solid or Flashing | Error indicator: blinking or solid red indicates active trip or fault state. |
Replacement and Spare Part Considerations
When swapping a failed Lenze EVS9326-EK controller, ensure the exact model suffix matches. The '-EK' designation specifies the integrated 9300 Servo Cam Profiler software and hardware structure. Installing a standard 9300 servo positioning controller without cam profiler functionality will prevent electronic cam tables from executing.
Prior to placing the replacement drive online, transfer the exact parameter set and cam table data. Unplug the fieldbus communication card from slot X1 (such as an EMF2131IB PROFIBUS module) on the original unit and insert it into the replacement drive. Ensure the CAN system bus terminating resistors and node addresses on connector X4 match the system layout.
Verify that feedback devices connect to the appropriate physical terminals: resolver input on X7 or encoder signals on X8. If absolute encoders are used, check that encoder communication parameters and shield connections are preserved to avoid feedback errors (Sd1 through Sd6).
Error Codes & Fault Codes
The following error codes may be displayed during operation or diagnostics:
| Code | Name | Description | Possible Cause | Recommended Action |
|---|---|---|---|---|
| C0013 | Parameter set error | Corrupted parameter set or parameter error on power-up | EEPROM write interrupted or bad parameter data loaded | Load factory default parameters (C0002) and reconfigure drive |
| CE0 | Communication error Slot X1 | Communication breakdown between controller and fieldbus module in Slot X1 | Loose fieldbus card, module fault, or bus cable interruption | Check module seating in slot X1, verify fieldbus wiring, or replace fieldbus module |
| CE1 | CAN bus error (System Bus) | Communication error on integrated CAN System Bus (X4) | Bus wiring fault, missing terminating resistors (120 Ohm), or node address conflict | Check CAN lines at X4, verify baud rate and terminal resistor settings |
| EER | EEPROM error | Internal EEPROM memory read/write access failure | Internal hardware failure in memory chip or power interrupt during write operation | Internal hardware fault — execute factory reset; if persistent, return unit for repair |
| H05 | Internal hardware error | Internal micro-controller hardware fault detected during self-test | Board-level failure in control logic circuit | Internal hardware fault — not field serviceable, return unit for repair |
| H10 | Internal system fault | System bus fault or severe internal software timing fault | Processor execution fault or hardware component failure | Internal hardware fault — power cycle drive; if fault persists, replace unit |
| H11 | Internal communications error | Fault in internal communication between control CPU and power section | Internal ribbon cable or gate driver board fault | Internal hardware fault — return unit for repair |
| LP1 | Mains phase failure | One phase missing on mains supply inputs L1, L2, L3 | Blown mains fuse, loose wire terminal, or unsymmetrical power grid | Check mains voltage at input terminals L1, L2, L3 and check line fuses |
| LU | DC link undervoltage | DC bus voltage dropped below lower voltage threshold (< 285 V DC) | Mains supply interrupted, voltage dip, or charging resistor fault | Check input supply voltage and mains supply connections |
| NMAX | Speed threshold exceeded | Motor shaft speed exceeded maximum programmed threshold | Incorrect motor parameter setting, encoder slip, or unstable control loop | Check speed limit parameter C0596, feedback wiring, and speed controller tuning |
| OC1 | Short circuit / Overcurrent | Instantaneous peak current limit exceeded on motor output terminals U, V, W | Short circuit in motor winding or cable, acceleration time too short, motor undersized | Check motor cable for short circuits or ground faults, inspect motor windings |
| OC2 | Earth fault | Ground fault detected on motor phases U, V, W | Insulation breakdown in motor or motor cable to protective earth (PE) | Measure insulation resistance of motor and cable with high voltage tester |
| OC5 | Overload during acceleration | Drive current limit exceeded for an extended duration during acceleration | Mechanical blockage, excessive load inertia, or acceleration ramp too steep | Increase acceleration time or inspect mechanical drive line for jam |
| OH | Heatsink overtemperature | Drive heat sink temperature exceeded maximum limit (> 90 °C) | Fan failure, blocked cooling vents, excessive ambient temperature or continuous overload | Clean heat sink cooling fins, check internal fan operation, verify cabinet ventilation |
| OH1 | Heatsink temperature monitoring trip | Heatsink thermal switch triggered | Heat sink temperature above threshold | Allow drive to cool down and inspect cooling fan operation |
| OH3 | Motor thermal overload (PTC) | Motor PTC / Klixon thermistor connected to X6/1 and X6/2 detected overtemperature | Motor thermal overload, insufficient motor cooling, broken thermistor cable | Allow motor to cool down, check motor load, verify PTC sensor wiring |
| OH4 | Inverter thermal overload (I x t) | Thermal overload threshold calculated by I x t inverter model reached | Continuous high motor current beyond continuous rating of 23.5 A | Reduce mechanical load or duty cycle on the drive controller |
| OU | DC link overvoltage | DC bus voltage exceeded safe maximum voltage (> 770 V DC / 800 V DC) | Excessive regenerative energy during deceleration, missing or defective brake resistor | Increase deceleration ramp time, verify external brake resistor connection and value |
| PR0 | Cam profile program error | Illegal cam data structure or uninitialized cam profile table | Incomplete cam profile transfer or invalid cam interpolation data | Re-download valid cam table configuration using Global Drive Control (GDC) |
| PR1 | Cam synchronization fault | Loss of synchronization between master axis and cam profile slave axis | Master encoder signal loss, excessive speed jump, or position pulse error | Check master encoder wiring (X8/X9) and master frequency settings |
| Sd1 | Resolver fault | Resolver signal open circuit or phase feedback error on terminal X7 | Defective resolver wiring, damaged cable, or disconnected resolver connector | Inspect resolver cable, check connector X7 seating and shield grounding |
| Sd2 | Encoder track error | Incremental encoder signal channel A, B, or Z fault at input X8 | Encoder cable wire break or missing encoder supply voltage | Check encoder wiring at X8, test encoder supply voltage |
| Sd3 | Encoder supply fault | Encoder supply overload or short circuit detected at encoder socket X8 | Short circuit in encoder cable or excessive encoder current drain | Disconnect X8 and measure encoder power lines for short circuit |
| Sd6 | Absolute encoder fault | EnDat or SSI absolute encoder communication fault at connector X8 | Absolute encoder protocol failure, noisy feedback line, or bad cable | Check encoder cable shielding and absolute encoder configuration |
Frequently Asked Questions
What software is used to program the Lenze EVS9326-EK?
The controller is programmed and configured using Lenze Global Drive Control (GDC) software. Parameter adjustments and cloning can also be performed via the plug-in EMZ9371BC operating keypad.
Can I replace an EVS9326-EK without re-entering parameters manually?
Yes, if a parameter backup exists in GDC software or if parameters are cloned directly using the EMZ9371BC keypad module from the original drive, the configuration and cam tables can be restored to the replacement unit.
How do I resolve a PR0 fault code on the drive?
A PR0 fault indicates an illegal cam data structure or uninitialized cam profile table. Re-downloading the verified cam table configuration via Lenze Global Drive Control (GDC) resolves this condition.
What feedback types are supported by the EVS9326-EK?
The drive supports resolver feedback connected at terminal X7, as well as incremental encoders, SinCos encoders, and absolute encoders (EnDat or SSI protocols) connected at connector X8.
What does error code H05 or H11 indicate?
Error codes H05, H10, and H11 indicate internal micro-controller or internal communication hardware faults. These errors are not field-serviceable and require returning the unit for repair or replacing the controller.
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