Lenze EVS9321-EK 9300 Series Servo Cam Profiler
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Product Information
The Lenze EVS9321-EK is a 0.75 kW servo drive controller from the 9300 Series, specifically engineered as an electronic cam profiler. Operating on a 3-phase nominal supply voltage of 400/480 V AC with an acceptable operating range of 320 to 528 V AC, this IP20-rated unit replaces traditional mechanical cam disks by executing dynamic motion profiles directly within the drive firmware. Delivering an output frequency from 0 to 480 Hz alongside rated currents of 2.5 A at 400 V and 2.1 A at 480 V, the controller is widely utilized across packaging, printing, converting, and material handling machinery.
Interfacing the controller into an automated motion control architecture relies on dedicated Sub-D connectors X7 and X8 for resolver and master incremental encoder feedback, alongside an integrated CAN system bus operating up to 500 kbit/s. The front face features an Automation Interface (AIF) slot to accept optional fieldbus modules such as the EMF2133IB or EMF2131IB PROFIBUS-DP adapters, or an EMF2102IB XT Keypad Module. Commissioning a replacement unit requires a complete configuration transfer, as the drive stores up to four parameter sets within non-volatile EEPROM memory. Operating parameters and electronic cam tables can be managed using Lenze Global Drive Control (GDC) PC software via an EMF2177IB PC System Bus Adapter, or copied using the keypad module. ABC Industrial Parts can assist when parameter extraction from a faulty unit is needed to prepare a spare drive for service.
System diagnostic states are indicated directly on the front panel by green READY and red TRIP LEDs. A solid green light indicates operational readiness, while a solid red light flags an active TRIP condition that disables the power stage. Diagnostics, parameter access, and the internal TRIP fault buffer can be reviewed through an attached XT Keypad or via the GDC diagnostic window. First-line troubleshooting for trip faults involves measuring 3-phase AC input voltages, inspecting braking resistor wiring, and checking CAN bus termination resistors. When non-volatile memory corruption (EER) or internal board-level faults (H05) occur, internal hardware is not field-serviceable, making drive replacement or comprehensive unit repair through ABC Industrial Parts the recommended path to minimize machine downtime.
Technical Specifications
| Rated Power | 0.75 kW |
| Nominal Supply Voltage | 400/480 V AC (3-Phase) |
| Supply Voltage Range | 320 - 528 V AC |
| Rated Input Current (400V) | 2.5 A |
| Rated Input Current (480V) | 2.1 A |
| Output Frequency Range | 0 - 480 Hz |
| Protection Rating | IP20 |
Programming and Configuration
Configuring the Lenze EVS9321-EK servo controller is accomplished primarily using Lenze Global Drive Control (GDC) PC software or the plug-in EMF2102IB XT Keypad Module. The controller includes internal non-volatile EEPROM memory capable of storing up to four complete parameter sets. These parameter sets save critical settings such as motor ratings, speed control loops, I/O assignment, and communication parameters, ensuring configuration retention across power cycles.
For electronic cam profiling applications, specialized curve tables and electronic motion profiles must be parameterised and uploaded into the drive memory. When commissioning a replacement spare, technicians must ensure that all application parameters and motion tables are transferred using GDC software and a PC adapter such as the EMF2177IB. Attempting to operate a drive without loading the required cam profile data results in execution errors such as fault code PR0.
Communication and System Integration
The Lenze EVS9321-EK features an integrated CAN system bus interface capable of operating at communication speeds up to 500 kbit/s. This system bus provides rapid inter-drive cross-communication and synchronization, enabling precise multi-axis motion control across complex machine lines. Internal CAN channels handle both process data objects and parameter transmission between connected drives and master controllers.
Fieldbus network integration is achieved through the front Automation Interface (AIF) slot. Plug-in modules, such as the EMF2133IB or EMF2131IB, allow direct connectivity to PROFIBUS-DP fieldbus networks. Proper physical bus installation requires placing a 120 Ohm bus termination resistor at both physical ends of the CAN system bus line to ensure reliable signal integrity and prevent bus-off communication errors.
Diagnostics and Status Indication
Diagnostic evaluation on the Lenze EVS9321-EK relies on front status LEDs, keypad monitoring codes, and software-based status screens. The green READY LED and red TRIP LED provide clear visual feedback regarding power stage readiness, active controller inhibits, warnings, and active shutdown faults.
Detailed diagnostic information and historical fault tracking are accessible by attaching an EMF2102IB XT Keypad Module or opening the diagnostic monitoring window in Global Drive Control (GDC). The controller maintains an internal TRIP history buffer that logs recent shutdown events, allowing technicians to trace transient issues such as supply voltage drops, motor thermal overloads, or feedback signal loss.
Status LED Indicators
| LED | Color/Status | Meaning |
|---|---|---|
| READY | Green - Solid / Blinking / Off | Solid = Drive operational and power stage ready; Blinking fast = Controller inhibit active; Off = Missing power supply or internal defect. |
| TRIP | Red - Solid / Blinking / Off | Solid = TRIP fault active (drive disabled); Blinking = Warning or advisory message active; Off = Normal operation without fault. |
Replacement and Spare Part Considerations
When selecting a replacement for a failed drive, matching the complete part number EVS9321-EK is critical. The -EK suffix specifies the integrated electronic cam profiler functionality; substituting a generic 9300 series drive without this motion firmware will result in an inability to execute required electronic cam profile tables.
A replacement unit cannot operate straight out of the box without prior parameterization. Before putting a spare unit into production, parameter sets and cam tables must be backed up from the original drive and restored to the replacement unit using Lenze Global Drive Control (GDC) software or an XT Keypad Module. Any option modules installed in the Automation Interface (AIF) slot, such as PROFIBUS communication cards, must be swapped to the replacement drive and checked for proper seating.
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 earth fault detected in motor cables or motor windings. | Short circuit in motor cable, damaged insulation, short circuit in motor power stage. | Check motor power wiring and insulation resistance. If fault persists with cable disconnected, power stage is damaged. |
| OC2 | Earth fault | Earth current detected on one of the motor phases. | Ground connection in motor cable or motor winding fault. | Check motor cables and terminals for ground faults or moisture ingress. |
| OC5 | Ixt overload | Continuous overload on inverter power stage. | Drive undersized for load duty cycle, mechanical blockage, steep acceleration ramps. | Reduce mechanical load, extend acceleration times, or verify drive power rating. |
| OU | DC bus overvoltage | DC bus circuit voltage exceeded upper threshold limit. | Excessive braking energy regenerated from motor; missing or open-circuit braking resistor. | Check external brake resistor connection, verify braking chopper setup, and extend deceleration times. |
| LU | DC bus undervoltage | DC bus circuit voltage dropped below low voltage limit. | Main supply voltage missing, line phase failure, blown supply fuse. | Check 3-phase AC input supply voltage, verify fuses and line contactors. |
| OH | Heatsink overtemperature | Inverter heatsink temperature exceeded maximum threshold (>90°C). | Insufficient cabinet cooling, clogged heatsink, ambient temperature too high, fan failure. | Clean heatsink, ensure adequate cabinet ventilation, and verify fan function. |
| OH4 | Motor thermal overload | Motor temperature sensor (PTC/TK) triggered overtemperature fault. | Motor thermal overload, continuous low-speed high-torque operation without external cooling. | Allow motor to cool down, inspect external motor cooling fans, and check mechanical load. |
| OH7 | Interior overtemperature | Internal electronic enclosure temperature limit exceeded. | Ambient temperature inside control enclosure excessive. | Improve enclosure cooling and air circulation. |
| NMAX | Maximum speed exceeded | Motor speed feedback exceeded max allowed threshold setting. | Inappropriate speed controller tuning, open feedback loop, overhauling load. | Check speed controller parameters and inspect resolver/encoder feedback connections. |
| CE0 | AIF communication error | Communication interruption between main board and module in AIF slot. | Fieldbus network fault, improper module seating, loose connector. | Check fieldbus wiring and termination; re-seat or replace AIF communication module. |
| CE1 | System bus (CAN1) error | Bus OFF or communication timeout on integrated system bus CAN1 interface. | CAN bus cable break, incorrect 120 Ohm termination resistor, baud rate mismatch. | Check CAN wiring, verify 120 Ohm bus termination resistors at both ends of the line. |
| CE2 | System bus (CAN2) error | Process data object timeout or transmission failure on CAN channel 2. | Master PLC or sender stopped sending cyclic process data. | Check master controller status and cyclic process data communication timing. |
| EER | EEPROM memory fault | Internal checksum error detected during EEPROM memory access. | Corrupted non-volatile parameter memory. | Reload factory default parameters and restore backup. Replace unit if fault is unrecoverable. |
| H05 | Internal hardware fault | Internal hardware self-test or power supply monitoring failed. | Internal electronic board level failure. | Return unit to manufacturer service or replace controller. |
| LP1 | Mains phase failure | One or two input phases missing from AC mains power supply. | Blown supply line fuse, faulty contactor contact, unbalanced 3-phase line voltage. | Measure input voltage across terminals L1, L2, L3 under load conditions. |
| PR0 | Cam program error | Cam profiler execution fault or invalid cam profile table parameterization. | Invalid cam data, undefined transition, corrupted profile memory. | Re-download cam tables and configuration parameters using Global Drive Control software. |
| SD2 | Feedback fault (Resolver / Encoder) | Signal loss or line break detected on resolver input (X7) or encoder input (X8). | Broken encoder/resolver cable, loose plug connector, defective feedback sensor. | Check feedback cable shielding and continuity; inspect Sub-D connectors X7 and X8. |
Frequently Asked Questions
What software is used to program and back up the Lenze EVS9321-EK?
The drive is configured and backed up using Lenze Global Drive Control (GDC) PC software via an EMF2177IB PC System Bus Adapter, or manually using an EMF2102IB XT Keypad Module.
How are parameter settings transferred to a replacement unit?
Up to four parameter sets are stored in internal EEPROM memory. Parameters can be extracted to a PC using GDC software or copied via the XT Keypad, then restored onto the replacement drive.
What feedback device interfaces are standard on this model?
The controller features dedicated Sub-D connectors X7 and X8 for connecting standard resolver sensors and incremental master encoders.
What does a PR0 fault code mean on this controller?
A PR0 fault indicates a cam program error caused by invalid cam profile data or uninitialized transition tables. Re-downloading the cam tables via GDC software resolves the fault.
Can fieldbus communication modules be added to the drive?
Yes, fieldbus networks such as PROFIBUS-DP are supported by installing communication modules like the EMF2133IB or EMF2131IB into the front Automation Interface (AIF) slot.
What does a solid red TRIP LED indicate?
A solid red TRIP LED indicates an active fault condition that has disabled the controller power stage. Specific error details can be read via the keypad or GDC software.
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