Lenze 00488401 EVS9321-EPV004 9300 Servo Position Controller
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Product Information
The Lenze 00488401 (model EVS9321-EPV004) is an intelligent servo position controller within the Lenze 9300 Servo family, engineered for multi-axis target positioning, pick-and-place gantry systems, and indexing tables. Powered by a 3-phase supply voltage ranging from 320 to 528 V AC, this compact drive delivers a rated power output of 0.37 kW with a continuous rated output current of 1.5 A and a maximum peak output current of 2.25 A for up to 60 seconds. Featuring integrated EP positioning firmware with a motion profile generator, homing routines, and target position registers, it processes complex positioning tasks internally without overloading the master controller. The V004 hardware configuration utilizes a cold plate thermal design rated IP20, transferring thermal energy through a flat rear mounting plate into an external cooling backplane to optimize cabinet depth.
Integration into automated control systems relies on flexible feedback and fieldbus communication interfaces. The unit provides dual feedback input interfaces supporting both resolvers and incremental encoders, alongside built-in System Bus (CAN) terminals operating at 500 kbps for drive-to-drive networking. Slot A accepts optional fieldbus communication modules, including PROFIBUS-DP (EMF2133IB / EMF2131IB), DeviceNet, Interbus, and LECOM RS-232/485 interfaces. Commissioning a replacement controller requires restoring parameter profiles stored in the non-volatile internal EEPROM using Lenze Global Drive Control (GDC) software or the 9371BB XT Keypad. Because parameters and position profile registers—such as software limits C1215 and C1216—must align with machine requirements, backup transfer or donor parameter extraction may be required, where ABC Industrial Parts can provide guidance to ensure operational readiness.
Real-time operational status and fault tracking are available through front-panel LED indicators and hardwired digital outputs. A solid green Ready LED signals normal initialized operation, whereas a blinking green LED indicates controller inhibition (CINH active) or a disabled power stage. A solid red Fault/Error LED indicates an active trip fault, while a blinking red LED points to a warning condition. Diagnostic data can be evaluated via parameter C0003 trip history memory, GDC software monitoring, or an active TRIP digital output signal. Common fault indications include short circuit (OC1), earth fault (OC2), drive overload (OC5), heatsink overtemperature (OH), DC bus overvoltage (OU), undervoltage (LU), and positioning lag error (PR1). Internal component failures, EEPROM corruption (EE0), or self-test errors (H05) are non-field-serviceable; in such events, sending the controller to ABC Industrial Parts for professional repair or a tested exchange unit offers the fastest route back to production.
Technical Specifications
| Manufacturer | Lenze |
| Part Number | 00488401 |
| Model / Type | EVS9321-EPV004 |
| Component Type | Servo Position Controller |
| Product Family | 9300 Servo |
| Rated Power | 0.37 kW |
| Supply Voltage Range | 320 - 528 V AC |
| Rated Output Current | 1.5 A |
| Max Peak Output Current | 2.25 A |
| Switching Frequency | 8 kHz |
| Max Output Frequency | 480 Hz |
| Protection Rating | IP20 |
| Mounting Type | Cold Plate / Panel Mount |
| Integrated Bus Interface | System Bus (CAN) |
Programming and Configuration
The Lenze EVS9321-EPV004 servo controller operates using integrated EP firmware designed to manage multi-block motion profiles, target position registers, and homing functions internally. Parameter setup and commissioning are conducted using Lenze Global Drive Control (GDC) software connected via interface adapters or through the XT Keypad (9371BB) attached directly to the unit.
Device configurations, operational parameters, speed thresholds such as maximum speed parameter C0011, and positioning limits like software limit switches C1215 and C1216 are stored across four non-volatile parameter sets inside the drive's EEPROM. When commissioning a replacement drive or resetting an axis, restoring factory defaults or reloading parameter sets can be executed via parameter code C0002 before downloading the tailored axis profile.
Communication and System Integration
For cross-drive coordination and network connectivity, the controller includes built-in System Bus (CAN) terminals connected via interface X14 operating at speeds up to 500 kbps. This onboard network allows direct drive-to-drive communication for synchronized positioning sequences without requiring external fieldbus control modules.
Higher-level control network integration is accomplished via expansion Slot A. Slot A supports fieldbus communication cards including PROFIBUS-DP modules (EMF2133IB and EMF2131IB), DeviceNet, Interbus, and LECOM RS-232/485 options. Proper physical bus operation requires 120 Ohm termination resistors placed at both ends of the CAN bus line and distinct node address assignment for each station.
Diagnostics and Status Indication
Visual operational status on the front of the EVS9321-EPV004 is provided by two diagnostic LEDs. The green Ready LED remains solid when the drive is initialized and operational, and blinks when the controller is inhibited (CINH active) or the power stage is disabled. The red Fault/Error LED stays solid during an active trip fault and blinks to indicate active warning conditions.
Detailed diagnostics and error evaluation are accessed through parameter C0003, which stores trip history memory accessible via the XT Keypad (9371BB) or GDC software. In addition, real-time trip monitoring can be integrated into system automation using the hardwired digital output TRIP signal.
Status LED Indicators
| LED | Color/Status | Meaning |
|---|---|---|
| Ready (Green) | Green - Solid / Blinking | Solid ON: Drive initialized and ready. Blinking: Controller inhibited (CINH active) or power stage disabled. |
| Fault / Error (Red) | Red - Solid / Blinking / Off | Solid ON: Active trip fault (or hardware failure if unresettable). Blinking: Active warning or message. OFF: Normal operation. |
Replacement and Spare Part Considerations
When selecting a replacement drive, ensure that both the part number (00488401) and model code (EVS9321-EPV004) correspond exactly. The V004 suffix designates the cold plate construction, which requires flush installation against an external thermal backplane or heatsink surface rather than utilizing standard internal fan-based cooling.
A replacement unit cannot operate directly out of the box without configuration. Axis parameters, positioning profile tables, and software limits (C1215/C1216) must be downloaded from a GDC backup file or transferred using the XT 9371BB keypad. Additionally, verify that any Slot A communication card, CAN termination resistors, and feedback wiring are correctly transferred from the original drive.
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 at the motor terminals or inside motor winding. | Short circuit in motor cable, short circuit in motor winding, line length too long. | Check motor cable and motor for short circuits. If error occurs immediately upon enable without motor connected, internal hardware fault — return unit for repair. |
| OC2 | Earth Fault | Ground fault / earth fault detected on output phase. | Ground fault in motor leads, ground fault in motor stator winding, high capacitive ground leakage current. | Check motor and motor supply leads for ground contact and insulation resistance. |
| OC5 | I2t Overload Drive | Drive loaded continuously above rated current for prolonged duration. | Drive oversized for load requirement, mechanical jamming, deceleration/acceleration ramps too steep. | Check load mechanics, reduce acceleration demand, verify correct motor and drive sizing. |
| OH | Heatsink Overtemperature | Power stage heatsink temperature exceeded upper limit value. | Ambient temperature too high, defective cabinet cooling fan, clogged heatsink cooling fins. | Check ambient temperature and enclosure ventilation. Clean heatsink fins. Verify cold plate surface mounting thermal contact. |
| OH4 | Motor Overtemperature | Motor temperature thermal sensor triggered via feedback interface. | Motor thermal overload, thermal sensor cable broken, PTC or KTY sensor misconfigured. | Allow motor to cool down, check motor load and temperature sensor connections. |
| OU | DC Bus Overvoltage | DC bus voltage exceeded upper trip threshold. | Excessive regenerative energy during deceleration, braking resistor disconnected or defective, deceleration ramp time too short. | Extend deceleration time, connect external brake resistor, check brake chopper circuit. |
| LU | DC Bus Undervoltage | DC bus voltage dropped below minimum operating limit. | Mains supply failure, supply voltage drop, line fuse blown. | Check main AC line input voltage, incoming power supply fuses, and wiring. |
| CE0 | Automation Interface Communication Error | Communication failure on optional fieldbus communication card in slot A. | Fieldbus cable defect, PLC master stopped, incorrect baud rate or station address. | Check fieldbus cable, bus termination resistors, fieldbus module status, and master PLC configuration. |
| CE1 | System Bus (CAN) Communication Error | Communication interruption on built-in System Bus X14. | CAN bus wire failure, missing 120 Ohm termination resistor, CAN node address collision. | Verify CAN bus wiring, ensure termination resistors installed at both ends, check CAN node ID settings. |
| EE0 | Internal EEPROM Fault | Data checksum error when accessing internal EEPROM parameter storage. | Interrupted save operation, parameter corruption, internal EEPROM chip failure. | Restore factory defaults (C0002) and re-download parameter file. If issue persists, internal hardware fault — return unit for repair. |
| H05 | Internal Hardware Error | Processor or internal power supply board failure detected during self-test. | Internal circuit board failure. | Internal hardware failure — not field serviceable. Return unit to Lenze service for repair or replace drive unit. |
| NMAX | Speed Limit Exceeded | Actual speed exceeded maximum configured threshold C0011. | Incorrect speed controller tuning, field weakening error, runaway load. | Verify motor encoder/resolver feedback, adjust maximum speed threshold C0011, optimize speed controller gain. |
| PR0 | Positioning Target Error | Target position value outside programmed software limit switches. | Target position commanded beyond software limits, invalid positioning profile parameter. | Verify software limit switches (C1215/C1216) and target position command in position profile. |
| PR1 | Following Error / Position Lag Error | Position tracking error exceeded maximum configured following error tolerance. | Mechanical blockage, acceleration set too high, position controller gain Kp too low. | Check axis mechanics for freedom of movement, check position loop gains and acceleration limits. |
Frequently Asked Questions
What software is used to configure the Lenze EVS9321-EPV004?
The EVS9321-EPV004 is configured using Lenze Global Drive Control (GDC) software or manually using the Lenze 9300 Series XT Keypad (9371BB).
How does cold plate thermal mounting work on the V004 hardware variant?
The V004 cold plate design dissipates heat through a flat rear mounting surface directly into an external cooling backplane or cabinet heatsink, eliminating the need for internal enclosure cooling fans.
Which feedback devices are supported by this servo controller?
The controller features dual feedback interfaces supporting inputs from both resolvers and incremental encoders.
What does a solid red Fault LED indicate on the front panel?
A solid red Fault LED indicates an active trip condition or unresettable internal failure. The specific error code can be read from parameter C0003 using GDC software or the XT keypad.
How can parameter settings be reset on a replacement drive?
Parameter settings can be reset to factory defaults by executing code C0002 via the XT keypad or GDC software before downloading the saved configuration file.
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Data backup and recovery
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Specific firmware and hardware versions
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