Lenze EVS9327-EK 9300 Series 15 kW Servo Cam Controller
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Product Information
The Lenze EVS9327-EK is a 15 kW IP20-rated servo controller from the 9300 Servo Cam series, designed for precision motion profiles, multi-axis synchronization, and electronic cam applications. Operating on a 3-phase supply voltage ranging from 320 V AC to 528 V AC, this unit delivers a 32 A continuous rated output current at an 8 kHz switching frequency, with a peak overload capacity of 48 A for up to 60 seconds. The drive replaces mechanical cam mechanisms with flexible, programmable electronic cam curves, making it suitable for continuous web handling, rotary knives, flying cut-offs, material handling, and high-speed packaging equipment.
Interfacing options on the EVS9327-EK include an integrated CANbus interface supporting the Lenze System Bus protocol at transmission rates up to 500 kbit/s, along with a flexible Automation Interface (AIF) slot. The AIF slot accommodates expansion communication modules such as the EMF2133IB PROFIBUS-DP card, Interbus, LECOM RS232/RS485, or the EMZ9371BC Keypad XT operating module. Feedback and local control are handled via dedicated Sub-D connectors for resolvers, incremental encoders, and master frequency simulation outputs, supported by 4 digital inputs, 2 digital outputs, and dual bipolar analog I/O channels. Commissioning a spare controller involves transferring drive parameter sets—up to four of which can be saved in non-volatile EEPROM memory—using Lenze Global Drive Control (GDC) software or the plug-in Keypad XT module. When setting up a replacement unit, ABC Industrial Parts can support technical teams with parameter transfer and drive preparation to ensure existing motion curves match the machine configuration.
Diagnostic conditions are indicated directly through front-panel status LEDs, where a green LED signals operation or controller inhibit, and a red LED alerts to trip faults or active warnings. Comprehensive fault tracking is available using the Keypad XT display, GDC diagnostic monitor software, or CANbus diagnostic registers. Common fault indications include overcurrent conditions during acceleration, deceleration, or steady state (OC1, OC2, OC5), DC bus overvoltage or undervoltage (OU, LU), mains phase failure (LP), and thermal protection faults for the heatsink, motor, or internal enclosure (OH, OH4, OH7). While field adjustments can resolve wiring, line supply, or cooling issues, internal EEPROM memory corruption (EER) or hardware errors (H05) represent non-field-serviceable board faults that necessitate unit replacement or expert repair from ABC Industrial Parts to restore production uptime.
Technical Specifications
| Manufacturer | Lenze |
| Part Number | EVS9327-EK |
| Model / Type | EVS9327-EK |
| Component Type | Servo Controller |
| Product Family | 9300 Servo |
| Series | 9300 Servo Cam |
| Rated Power | 15 kW |
| Supply Voltage Range | 320 - 528 V AC (3-phase) |
| Rated Output Current | 32 A |
| Peak Output Current | 48 A (150% for 60 s) |
| Switching Frequency | 8 kHz |
| Enclosure Rating | IP20 |
| Digital Inputs | 4 |
| Digital Outputs | 2 |
| Analog Inputs | 2 (bipolar) |
| Analog Outputs | 2 (bipolar) |
Programming and Configuration
Programming and parameter setting for the Lenze EVS9327-EK are managed using Lenze Global Drive Control (GDC) engineering software or the portable EMZ9371BC Keypad XT operating module. The drive architecture allows users to configure flexible electronic cam profiles and motion sequences, bypassing the need for physical mechanical cams in continuous or synchronized production tasks.
Up to four complete parameter sets can be stored internally in non-volatile EEPROM memory. This internal storage structure allows quick switching between machine profiles and simplifies backup procedures during maintenance. When replacing a controller, saving parameter sets from the old unit and flashing them to the new drive preserves system settings and axis alignment parameters.
Communication and System Integration
System connectivity on the Lenze EVS9327-EK is grounded in its onboard CANbus interface running the Lenze System Bus protocol, which supports data transmission speeds up to 500 kbit/s for coordinated multi-axis master/slave synchronization.
For higher-level plant integration, the drive features a modular Automation Interface (AIF) slot. This expansion slot accepts fieldbus option modules including the EMF2133IB PROFIBUS-DP card, Interbus interface, or LECOM RS232/RS485 serial communication cards, enabling seamless integration into diverse PLC control architectures.
Diagnostics and Status Indication
Real-time status monitoring for the EVS9327-EK is performed via dedicated status LEDs, the optional EMZ9371BC Keypad XT display, GDC software diagnostic monitors, and CANbus diagnostic registers. The visual indicators allow maintenance personnel to immediately determine operational readiness or fault conditions.
Status LEDs indicate drive state through solid and blinking light patterns for ready and fault status. Detailed error logs and runtime parameters can be evaluated through the GDC software monitor or the Keypad XT display module.
Status LED Indicators
| LED | Color/Status | Meaning |
|---|---|---|
| Ready / Operation LED | Green - Solid / Blinking | Solid = Drive operational / enabled; Blinking = Controller inhibit active / ready for operation |
| Fault LED | Red - Solid / Blinking | Solid = TRIP fault present; Blinking = Warning / Message active |
Replacement and Spare Part Considerations
When installing a replacement Lenze EVS9327-EK servo controller, verify that the 15 kW power rating and voltage specifications match the existing installation. The replacement unit must support the same feedback devices, such as resolvers or incremental encoders connected via the Sub-D ports.
Configuration parameters must be copied to the new drive prior to operation. Transfer parameter sets stored in the EEPROM memory using Lenze Global Drive Control (GDC) software or an EMZ9371BC Keypad XT module. Ensure that any option cards in the Automation Interface (AIF) slot, such as an EMF2133IB PROFIBUS module, are transferred to the new drive and properly seated.
Error Codes & Fault Codes
The following error codes may be displayed during operation or diagnostics:
| Code | Name | Description | Possible Cause | Recommended Action |
|---|---|---|---|---|
| OC1 | Overcurrent Acceleration | Output current exceeded overcurrent limit during dynamic motor acceleration. | Short circuit in motor cable or windings, acceleration time set too short, or ground fault. | Check motor wiring and insulation, check acceleration ramp parameters, verify motor sizing. |
| OC2 | Overcurrent Deceleration | Output current exceeded overcurrent limit during dynamic deceleration. | Deceleration time set too short, short circuit in motor cable, or motor overload. | Extend deceleration time, check motor and cabling for insulation or phase short circuits. |
| OC5 | Overcurrent Constant Speed | Output current exceeded overcurrent limit during steady-state operation. | Sudden load impulse, mechanical blockage, or motor fault. | Check mechanical drive train for binding or jamming, inspect motor. |
| OU | DC Bus Overvoltage | DC bus voltage exceeded maximum allowable threshold (approx. 770-800 V DC). | Excessive regenerative energy returned during braking without operational brake chopper/resistor, braking resistor open circuit. | Check braking resistor connections, increase braking deceleration time, verify brake chopper functionality. |
| LU | DC Bus Undervoltage | DC bus voltage fell below minimum voltage threshold. | Mains supply voltage too low, supply voltage drop under load, mains phase loss. | Check mains input voltage, check supply fuses and line contactors. |
| LP | Mains Phase Failure | Loss of one or more phases in the mains power supply. | Blown input line fuse, damaged power supply cable, phase imbalance. | Check input power lines, fuses, and line reactor/contactors. |
| OH | Heatsink Overheat | Heatsink temperature exceeded upper limit. | Inadequate cooling air flow, dirty heatsink fins, fan failed or obstructed, high ambient temperature. | Clean heatsink cooling fins, check internal fan operation, verify ambient temperature is within limits. |
| OH4 | Motor Thermal Overload | Motor temperature sensor triggered thermal protection threshold. | Motor thermal overload, continuous operation at low speed with high torque, damaged PTC/KTY wiring. | Allow motor to cool down, reduce motor continuous load, check temperature sensor connections. |
| OH7 | Internal Drive Overheat | Internal temperature inside the drive enclosure exceeded limit. | Enclosure internal temperature too high, control cabinet fan failure. | Improve cabinet ventilation, check cabinet air conditioning/cooling. |
| CE0 | AIF Communication Failure | Communication interruption between controller core and optional fieldbus card in AIF slot. | Fieldbus module loose or missing, bus communication timeout, defective fieldbus module. | Verify proper seating of AIF option card, check fieldbus cabling and master controller. |
| CE1 | CAN System Bus Communication Error | Communication error or bus-off condition on integrated CAN System Bus. | CAN bus wire broken, missing terminating resistors (120 Ohm), baud rate mismatch. | Check CANbus wiring, ensure terminating resistors are installed at network ends, check baud rate settings. |
| EER | EEPROM Memory Error | Read or write fault detected during access to internal EEPROM non-volatile parameter memory. | Internal EEPROM hardware corruption, power failure during write procedure. | Re-initialize parameters to factory default. If error persists, internal board failure requiring unit repair/replacement. |
| H05 | Internal Hardware Error | Internal control board or processor diagnostic failure. | Internal electronic components damaged or failed. | Non-field serviceable internal hardware fault. Replace or return unit for service. |
| NMAX | Overspeed Fault | Motor speed exceeded max speed protection threshold. | Speed controller unstable, feedback encoder/resolver wire break, loss of feedback shield. | Check encoder/resolver wiring and shielding, inspect speed controller gain settings. |
Frequently Asked Questions
What software is required to configure the Lenze EVS9327-EK servo controller?
Programming and configuration are performed using Lenze Global Drive Control (GDC) software or directly via the optional EMZ9371BC Keypad XT operating module.
What supply voltage and output current does the EVS9327-EK support?
The drive operates on a 3-phase supply voltage from 320 V AC to 528 V AC, providing a 32 A rated continuous output current and a 48 A peak current for up to 60 seconds.
How are parameter backups managed during drive replacement?
The controller stores up to four parameter sets in internal non-volatile EEPROM memory. These parameters can be backed up and transferred using GDC software or a Keypad XT module.
What communication interfaces are available on the EVS9327-EK?
It features an onboard CANbus interface running Lenze System Bus at up to 500 kbit/s and an Automation Interface (AIF) slot that supports PROFIBUS-DP (EMF2133IB), Interbus, or LECOM RS232/RS485 modules.
What do the front panel status LEDs indicate?
The green LED indicates operation (solid when enabled, blinking when controller inhibit is active). The red LED indicates fault status (solid during TRIP faults, blinking during active warnings).
What action should be taken if an H05 or EER fault code appears?
Fault EER indicates an EEPROM memory read/write error, while H05 indicates an internal hardware failure. If re-initializing parameters does not clear the error, the internal board fault requires unit repair or replacement.
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