Lenze EVS9321-EPV004 9300 Servo Position Controller 0.37kW
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Product Information
The Lenze EVS9321-EPV004 is a 0.37 kW servo position controller from the Lenze 9300 Servo series, engineered for precise dynamic motion control of synchronous and asynchronous AC servo motors. Operating on a 320 V AC to 528 V AC main supply with a rated output current of 1.5 A and a 24 V DC control supply, this compact drive incorporates an internal target position profile generator, touch-probe indexing, and flexible homing logic. The EP positioning variant executes motion profiles locally on the drive, reducing execution load on higher-level controllers in packaging, automated assembly, material handling, and textile machinery.
Interfacing the EVS9321-EPV004 into a machine setup relies on dedicated feedback and network connectors, including resolver feedback at connector X7, incremental or SinCos encoder feedback at connector X8, and an integrated CAN System Bus interface at connector X4 operating at up to 500 kbps. The front panel includes an Automation Interface (AIF) slot designed to accept option modules such as PROFIBUS-DP (EMF2133IB or EMF2111IB), DeviceNet, INTERBUS, or LECOM serial adapters, as well as the Operating Module Keypad XT (EMF2102IB). Commissioning a spare unit requires matching network address switches, setting baud rates, and loading parameter profiles using Global Drive Control (GDC) software or transferring parameter backups via Keypad XT memory. Engineering support from ABC Industrial Parts can assist maintenance teams with parameter transfers and network verification to get replacement units operational rapidly.
Diagnostic oversight is provided on the front panel by three status LEDs: Green (DRIVE READY) indicating drive enable or ready status, Red (TRIP) signaling an active fault state, and Yellow (IMP) confirming pulse inhibit on the power output stage. Detailed diagnostic data, including an eight-event error history log with operating hour timestamps, can be accessed via Keypad XT or GDC software to resolve common issues such as overcurrent (OC1), DC bus overvoltage (OU), system bus errors (CE0), or positioning following errors (P01). When diagnostic logs indicate unrecoverable internal failures such as power stage output faults (H10), internal thermal sensor damage (H11), or EEPROM corruption (EER), board-level field repair is not viable, making a tested replacement or repair service through ABC Industrial Parts the most effective route to restore production.
Technical Specifications
| Manufacturer | Lenze |
| Part Number | EVS9321-EPV004 |
| Model / Type | 9300 Servo Position Controller |
| Component Type | Servo Controller |
| Product Family | 9300 Servo |
| Rated Power Output | 0.37 kW |
| Supply Voltage Range | 320 - 528 V AC |
| Control Supply Voltage | 24 V DC |
| Rated Output Current | 1.5 A |
| Peak Output Current (60s) | 2.25 A |
| Max Short-Time Current (0.5s) | 3.0 A |
| Power Dissipation | 40 W |
| Switching Frequency | 8 kHz |
| Max Output Frequency | 480 Hz |
| Digital Inputs | 8 |
| Digital Outputs | 4 |
| Analog Inputs | 2 |
| Analog Outputs | 2 |
Programming and Configuration
Programming and parameter configuration for the Lenze EVS9321-EPV004 are executed using Global Drive Control (GDC) software or directly via the pluggable Operating Module Keypad XT (EMF2102IB). Keypad XT allows field technicians to monitor parameters and execute parameter commands, such as parameter code C0002 for restoring factory defaults or saving modified profile sets directly to internal non-volatile drive memory.
The EP variant of the 9300 Servo series includes integrated target positioning software logic, touch-probe indexing, and customizable homing routines. When commissioning a spare unit, drive parameters must be loaded from a saved profile backup into parameter code C0002 to match motor feedback types, current limits, positioning lag limits (C0254), and ramp times (C0012/C0013).
Communication and System Integration
System integration on the EVS9321-EPV004 is facilitated by the integrated Lenze System Bus (CAN interface) on connector X4, enabling cross-communication between drives and master-slave axis synchronization at rates up to 500 kbps. Correct bus line termination with 120-ohm resistors at both ends and valid CAN node address selection are required for continuous network operation.
For high-level fieldbus integration, the unit features a front Automation Interface (AIF) slot. This slot accepts option modules including PROFIBUS-DP (EMF2133IB / EMF2111IB), DeviceNet, INTERBUS, or LECOM RS232/RS485 adapters, integrating the drive into centralized master PLCs.
Diagnostics and Status Indication
The drive provides hardware status monitoring via three front panel LEDs. The Green (DRIVE READY) LED blinks when the drive is ready but inhibited, and turns solid when fully enabled and operational. The Red (TRIP) LED indicates an active fault condition, while the Yellow (IMP) LED signals pulse inhibit on the output power stage.
Extended diagnostics are available through GDC software or Keypad XT parameter C0168. The drive stores up to eight fault events in a non-volatile error buffer complete with operating hour timestamps, simplifying fault identification during machine troubleshooting.
Status LED Indicators
| LED | Color/Status | Meaning |
|---|---|---|
| Red LED (TRIP) | Red - Solid | Fault or TRIP condition present. Controller is inhibited due to active error. |
| Green LED (DRIVE READY) | Green - Blinking / Solid | Blinking = Controller ready / Controller inhibit active; Solid = Controller enabled / operating normally. |
| Yellow LED (IMP) | Yellow - Solid | Pulse inhibit active (power stage outputs disabled). |
Replacement and Spare Part Considerations
When replacing an existing drive with a spare Lenze EVS9321-EPV004, ensure the part number matches the EP positioning variant and 0.37 kW / 1.5 A rating. Installing a non-EP model will result in missing target positioning profile logic and homing routines required by the machine program.
Before powering up the replacement unit, transfer any front AIF fieldbus option module (such as PROFIBUS-DP EMF2133IB / EMF2111IB) from the original drive, verify terminal wiring and 120-ohm CAN termination resistors, and load the parameter set via GDC or Keypad XT to mirror motor feedback and axis positioning settings.
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 excessive ground current during acceleration | Short circuit in motor cable, inter-turn short in motor, excessive acceleration ramp | Check motor and wiring for short circuit / ground fault; check acceleration time (C0012) |
| OC2 | Overcurrent during Deceleration | Output current exceeds threshold during braking ramp | Deceleration time too short, braking energy too high | Increase deceleration time ramp (C0013), verify braking module / resistor operation |
| OC5 | I x t Overload | Power stage overloaded continuously | Continuous overload, motor undersized for application, mechanical binding | Check mechanical drive train for stiffness, verify motor power sizing |
| OU | DC Bus Overvoltage | DC bus voltage exceeds upper threshold (>770 V DC) | Excessive regenerative energy, deceleration ramp too fast, braking resistor defective or disconnected | Check braking resistor connection and value; increase deceleration time |
| LU | DC Bus Undervoltage | DC bus voltage dropped below threshold (<370 V DC / 285 V DC) | Supply mains failure, input phase missing, mains voltage too low | Check mains line voltage, check supply fuses and line contactor |
| OH | Heatsink Overtemperature | Heatsink temperature exceeds 85°C / 90°C | Insufficient cabinet cooling, heatsink dirty, fan defective, ambient temperature too high | Clean heatsink fins, check enclosure fan and ventilation space |
| OH3 | Motor Overtemperature (PTC) | Motor thermal sensor triggered at terminals T1/T2 | Motor overheated due to sustained overload or insufficient motor cooling | Allow motor to cool down, check motor load and forced-cooling fan |
| OH7 | Motor Temp Sensor Wire Break | Open circuit in motor thermal sensor wire | Disconnected sensor cable or defective KTY/PTC sensor | Check wiring between drive terminals T1/T2 and motor thermal sensor |
| OH8 | I2t Motor Load Warning/Trip | Calculated motor load limit reached via I2t thermal model | Extended low-speed operation under heavy load | Reduce continuous motor torque requirement or add external motor cooling fan |
| OS1 | Overspeed | Actual motor speed exceeded maximum threshold | Speed controller unstable, encoder wiring issue, overhauling load | Tune speed controller gain (C0070, C0071), verify encoder/resolver shielding and connections |
| CE0 | System Bus (CAN) Communication Error | Communication failure on integrated CAN interface X4 | Bus cable broken, incorrect baud rate, missing termination resistor | Check CAN cabling, 120 Ohm termination resistors at both ends, and node address settings |
| CE1 | AIF Communication Error | Communication fault between drive and optional fieldbus module in AIF slot | Module disconnected, loose connection, fieldbus master stopped | Check seating of AIF fieldbus module, verify PLC/master state |
| CE2 | AIF Time-Out Error | Time-out during process data transfer via AIF slot | PLC controller went into Stop state or fieldbus cable disconnected | Check fieldbus master status and network cabling |
| CE3 | CAN Time-Out Error | Process data transfer time-out on System Bus CAN | Transmitting peer node offline or network interrupted | Check status of master/peer drive on CAN bus |
| CE4 | CAN Bus-Off State | CAN controller entered Bus-Off state due to excessive transmission errors | Wrong baud rate, noise interference, bad shielding, open bus line | Check shield grounding, line termination, and CAN baud rate configuration |
| EER | EEPROM Memory Error | Internal EEPROM checksum error on power-up or parameter save | Power interrupted during parameter saving or internal memory failure | Reload factory default parameters (C0002 = 11); internal hardware fault — return unit for repair if error persists |
| rE0 | Resolver Fault (X7) | Loss of resolver signal on connector X7 | Resolver cable disconnected, broken wire, bad pin connection | Check resolver cable, shielding, and connector X7 pin connections |
| rE1 | Incremental/SinCos Encoder Fault (X8) | Encoder signal track failure or cable break on X8 | Track A/B signal loss or power supply failure to encoder | Check encoder wiring, power supply, and track signals |
| LP1 | Motor Phase Failure | Missing output phase to motor | Motor wire disconnected, output contactor open | Check wiring on terminals U, V, W to motor |
| P01 | Following Error Exceeded (Pos-Lag) | Positioning lag between command profile and actual position exceeds limit C0254 | Mechanical axis binding/jam, acceleration ramp too aggressive, position controller gain too low | Check mechanical movement, adjust position controller gain (C0254) or error tolerance window |
| P02 | Positive Limit Switch Reached | Hardware or software positive limit switch actuated during motion | Axis moved past maximum permitted range | Clear limit switch input and jog axis back into valid working zone |
| P03 | Negative Limit Switch Reached | Hardware or software negative limit switch actuated during motion | Axis moved past minimum permitted range | Clear limit switch input and jog axis back into valid working zone |
| P05 | Homing / Referencing Error | Homing routine failed to complete or reference switch signal lost | Reference switch defective, homing direction wrong, switch missed during search | Verify homing switch wiring, homing speed, and reference search parameters |
| H10 | Internal Power Stage Output Fault | Internal driver/power module failure in power section | Internal component breakdown or output transistor short | Internal hardware fault — return unit for repair |
| H11 | Internal Thermal Sensor Error | Internal heatsink temperature sensor open or shorted | Internal sensor hardware damage | Internal hardware fault — return unit for repair |
Frequently Asked Questions
What software is required to configure the Lenze EVS9321-EPV004?
The drive is configured using Global Drive Control (GDC) software or directly via the Operating Module Keypad XT (EMF2102IB).
Can a standard 9300 servo drive replace the EVS9321-EPV004?
No, the EP suffix indicates the positioning controller variant featuring internal profile generation, homing logic, and touch-probe functions. A standard non-EP drive lacks these positioning capabilities.
How are parameters transferred from a faulty drive to a replacement unit?
Parameters can be exported from the original drive using GDC software or copied using a Keypad XT module (EMF2102IB) and written to the replacement drive via parameter code C0002.
What do the status LEDs on the front panel indicate?
The Red LED (TRIP) signals an active fault, the Green LED (DRIVE READY) indicates controller operational or ready status, and the Yellow LED (IMP) indicates pulse inhibit on the output power stage.
What does fault code CE0 mean on the EVS9321-EPV004?
Fault code CE0 indicates a System Bus (CAN) communication error on connector X4, caused by cable damage, incorrect baud rate configuration, or missing line termination resistors.
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