Lenze 00473051 EVS9321-EPV004 9300 Servo Positioning Inverter
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Product Information
The Lenze 00473051 (Model EVS9321-EPV004) is a compact digital servo positioning inverter drive from the Lenze 9300 Servo family, engineered for high-dynamic motion control, vector control, and point-to-point position tracking. Delivering a rated power output of 0.75 kW, this drive operates on a 3-phase supply voltage rated between 400 V AC and 480 V AC, within an allowable operating voltage range of 320 V AC to 528 V AC. The unit provides a continuous rated output current of 2.5 A at an 8 kHz switching frequency, with a 60-second overload capacity of 3.75 A and peak current output reaching 5.0 A (200%) to accommodate heavy torque demands during rapid acceleration phases. Built-in positioning firmware allows the unit to process positioning profiles internally without requiring a standalone external motion controller, making it well-suited for packaging equipment, material handling systems, and automated machinery lines.
The EVS9321-EPV004 features a primary motor feedback connection via a Sub-D connector for resolver feedback, alongside pulse train and encoder interfaces supporting incremental encoder simulation and master frequency integration. Direct inter-drive communication and multi-axis coordination are established through the onboard CAN system bus interface. System expansion is accommodated by an Automation Interface (AIF) slot, which accepts plug-in communication modules including PROFIBUS-DP (EMF2133IB), CANopen (EMF2175IB), Interbus, or LECOM RS-232/485 modules. Placing a replacement unit into service requires restoring the motor parameters, motion profiles, and network configurations, as a spare drive cannot operate without parameter transfer. Configuration files can be uploaded or downloaded using the EMZ9371BC operating keypad plug-in memory or Lenze Global Drive Control (GDC) PC software, with ABC Industrial Parts available to assist with spare unit preparation and configuration management.
System diagnostics are accessible via two front-mounted status LEDs and digital monitoring tools. A solid red LED signals an active TRIP condition or critical drive fault, while the green LED indicates whether the drive controller is active, ready, or inhibited. Extended fault logs and real-time status words are readable through the EMZ9371BC keypad display or GDC software. First-line troubleshooting for common trips should include checking the 3-phase AC input supply voltage, inspecting motor cables for insulation faults, testing brake resistor integrity, and confirming CAN bus wiring and termination resistor installation. When internal errors such as EEPROM checksum failures or continuous microprocessor watchdog resets occur, internal board recovery is required; in these situations, tested exchange units or repair solutions from ABC Industrial Parts provide the quickest pathway to resume production.
Technical Specifications
| Manufacturer | Lenze |
| Part number | 00473051 |
| Model / Type | EVS9321-EPV004 |
| Product family | 9300 Servo |
| Component type | Servo Drive |
| Rated power | 0.75 kW |
| Supply voltage | 400 - 480 V AC |
| Supply voltage range | 320 - 528 V AC |
| Rated output current | 2.5 A |
| Max output current (60s) | 3.75 A |
| Peak output current | 5.0 A |
| Output voltage range | 0 - 400 V AC |
| Max output frequency | 480 Hz |
| Switching frequency | 8 kHz |
| Onboard system bus | CAN |
Programming and Configuration
The Lenze EVS9321-EPV004 incorporates integrated positioning firmware that executes motion control tasks directly inside the drive. This onboard functionality allows automated machinery to perform multi-axis motion, synchronized indexing, and point-to-point position tracking without relying on external motion controller hardware. Drive parameters, motor data, travel profiles, and I/O assignments are configured using Lenze Global Drive Control (GDC) software or via the plug-in EMZ9371BC operating keypad.
The plug-in keypad features integrated EEPROM storage, allowing commissioning parameters to be copied directly from a running drive and transferred to a replacement unit. When using GDC software over a serial or fieldbus connection, operators can view real-time status words, examine historical error logs, and transfer parameter archives. Parameter backups must correspond to the specific EP positioning firmware, as attempting to load parameter sets from different drive software revisions results in a parameter mismatch error (Pr).
Communication and System Integration
System integration on the EVS9321-EPV004 is centered around the integrated CAN system bus interface. This onboard fieldbus connection enables fast inter-drive communication for multi-axis synchronization and master-slave relationships across Lenze 9300 drives. Proper network configuration requires setting unique node addresses, matching baud rates, and inserting 120-Ohm bus termination resistors at both ends of the CAN bus line.
For integration into broader industrial control networks, the drive includes an Automation Interface (AIF) option slot. This interface accepts optional communication modules such as the EMF2133IB PROFIBUS-DP card, EMF2175IB CANopen card, Interbus cards, and LECOM RS-232/485 serial communication cards. Primary motor feedback connects through a dedicated Sub-D resolver input, accompanied by interfaces supporting encoder simulation and master frequency processing.
Diagnostics and Status Indication
The front side of the EVS9321-EPV004 incorporates diagnostic LEDs to provide immediate indication of drive operating conditions. Additional diagnostic information, active fault codes, and parameter states can be retrieved using the EMZ9371BC keypad module or through the status word monitor in Global Drive Control (GDC) software.
Status LED Indicators
| LED | Color/Status | Meaning |
|---|---|---|
| Red LED | Red - Solid | TRIP active / Fault state. Solid red indicates internal drive failure or critical fault requiring investigation. |
| Green LED | Green - Solid / Flashing | Solid green = drive active/enabled; Flashing green = drive ready, controller inhibited. |
Replacement and Spare Part Considerations
When selecting a replacement for a Lenze 00473051, confirm that the unit matches the model code EVS9321-EPV004. The EP suffix denotes integrated positioning firmware functionality; substituting standard speed-control 9300 drives will result in incompatible control structures and motion profile errors.
Prior to putting a replacement drive into service, parameter configuration files must be restored from a known backup. Parameters can be copied directly using the EMZ9371BC keypad module or loaded via Global Drive Control (GDC) software. Any optional communication modules, such as PROFIBUS-DP (EMF2133IB) or CANopen (EMF2175IB) option cards, must be physically transferred from the existing unit to the replacement drive's AIF slot.
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 / Overcurrent | Short circuit or extreme current peak during acceleration ramp. | Short circuit in motor cable, motor winding short, or acceleration ramp set too steep. | Inspect motor and cable insulation, measure motor winding resistance, increase acceleration time. |
| OC2 | Deceleration Overcurrent | Overcurrent detected during deceleration phase. | Deceleration time too short or short circuit on output phase. | Extend deceleration time or check motor cabling for grounding/inter-phase fault. |
| OC5 | Constant Speed Overcurrent | Overcurrent peak during constant speed operation. | Sudden mechanical load peak, mechanical lockup, or output short circuit. | Check mechanical drive system for binding or sudden load surges. |
| OU | DC Bus Overvoltage | DC bus voltage exceeded upper threshold limit. | Excessive braking energy fed back from motor; braking resistor not connected or defective. | Check braking resistor connection, extend deceleration time, or replace faulty brake module. |
| LU | DC Bus Undervoltage | DC bus voltage fell below minimum allowable limit. | Mains supply failure, low AC supply voltage, or blown input fuse. | Check AC mains supply lines, fuses, and power connections. |
| OH | Heatsink Overtemperature | Drive heatsink temperature exceeded thermal limit. | Insufficient cooling airflow, dirty heatsink fins, high ambient cabinet temperature, continuous overload. | Clean heatsink, ensure cabinet ventilation is adequate, check cabinet internal fans. |
| OH4 | Motor Overtemperature | Motor temperature sensor triggered overtemperature alarm. | Motor thermal overload, blocked motor cooling fan, or open circuit in PTC/sensor wiring. | Allow motor to cool down, check motor load, verify PTC/sensor wiring and terminals. |
| OH7 | Internal Drive Overtemperature | Internal temperature inside inverter housing is too high. | Ambient temperature in electrical cabinet exceeds specification or internal fan failure. | Check cabinet ambient temperature and replace internal fan if inoperative. |
| Ce0 | AIF Communication Error | Communication breakdown between inverter control card and AIF option module. | Fieldbus network connection lost, defective fieldbus master, or loose option module. | Check module seating, verify fieldbus wiring and master PLC status. |
| Ce1 | System Bus (CAN) Fault | Communication failure or frame error on CAN system bus. | Broken CAN bus cable, missing bus termination resistor (120 Ohm), or baud rate mismatch. | Verify CANbus wiring, cable shielding, termination resistors, and node address settings. |
| EE | EEPROM Checksum Error | Internal EEPROM parameter checksum error. | Corrupted non-volatile parameter memory or internal EEPROM hardware failure. | Reload default parameters and reconfigure. If error persists, internal hardware fault requires returning unit for repair. |
| EEr | EEPROM Read Error | Failure reading parameter data from non-volatile memory. | Internal memory corrupt or hardware failure. | Internal board failure — re-initialize parameters; if unresolved, repair or replace the drive. |
| Pr | Parameter Mismatch | Parameter set loaded into drive is invalid or incompatible. | Transferring parameters from a different drive version or corrupted parameter file. | Re-download correct parameter configuration compatible with EP positioning drive version. |
| NMAX | Speed Limit Exceeded | Actual motor speed exceeded maximum configured speed threshold. | Speed controller unstable, feedback device fault, or runaway mechanical load. | Check feedback encoder connections and gain settings in speed regulator loop. |
| rET | CPU Reset / Watchdog | Internal microprocessor watchdog fault or automatic reset triggered. | Severe electromagnetic interference (EMC) or internal hardware failure. | Check EMC grounding/shielding. If error recurs continuously, internal control board is defective — return unit for repair. |
Frequently Asked Questions
How do I transfer parameter settings to a replacement Lenze EVS9321-EPV004 drive?
Parameter settings can be transferred by backing up the configuration to an EMZ9371BC operating keypad module and plugging it into the replacement drive, or by uploading and downloading the parameter file using Lenze Global Drive Control (GDC) software.
What does a solid red LED indicate on the front of the drive?
A solid red LED indicates an active TRIP or fault state caused by an internal drive error or external fault condition. Specific error details can be read via the keypad or GDC software.
Which fieldbus communication protocols does the EVS9321-EPV004 support?
The drive features an onboard CAN system bus interface and supports additional fieldbus protocols—including PROFIBUS-DP (EMF2133IB), CANopen (EMF2175IB), Interbus, and RS-232/485 LECOM—via optional cards in the Automation Interface (AIF) slot.
What causes an EE or EEr fault code on this drive?
EE and EEr fault codes indicate internal EEPROM checksum or read errors caused by parameter memory corruption or hardware failure. Re-initializing parameters may resolve the fault, but persistent errors indicate internal board failure requiring repair or replacement.
What power supply voltage is required for the Lenze 00473051 servo inverter?
The drive operates on a 3-phase AC power supply rated from 400 V AC to 480 V AC, with an allowable voltage range of 320 V AC to 528 V AC.
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Specific firmware and hardware versions
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