Lenze 13431682 EVS9321-EPV004 0.75kW Servo Positioning Controller
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Product Information
The Lenze 13431682 EVS9321-EPV004 is a 0.75 kW servo positioning controller from the Lenze 9300 Servo series designed for precise multi-axis industrial motion control. Operating on a 3-phase mains supply between 320 V AC and 528 V AC (400 V AC nominal), this compact unit provides a continuous output current of 2.5 A and a peak overload capacity of 3.75 A for up to 60 seconds. By combining an integrated digital motion positioning profile engine with high-performance field-oriented vector control, the drive manages both synchronous and asynchronous AC motors up to a maximum output frequency of 480 Hz at an 8 kHz switching frequency.
Interfacing the EVS9321-EPV004 within an automated system relies on versatile physical connection points and modular expansion options. Hardware connectivity includes dedicated Sub-D connectors for feedback systems such as resolvers, SinCos, or absolute encoders, pluggable control terminals for local digital and analog I/O, an integrated CANbus system bus interface at slot X4, and an Automation Interface (AIF) expansion slot X6 that accommodates optional fieldbus cards like PROFIBUS-DP, DeviceNet, or INTERBUS. Putting a spare unit into service requires restoring parameter configurations, which can be accomplished using Lenze Global Drive Control (GDC) software, a 9371BB XT keypad, or by transferring saved parameter sets directly from the internal non-volatile EEPROM memory. ABC Industrial Parts supports technical teams with replacement hardware and parameter handling.
Diagnostic monitoring on the unit is supported through real-time front-panel LED indicators, including the red DRV-READY (TRIP) indicator for fault states, the green DRV-BUSY (READY) indicator for operational activity, and dual CAN-RUN/CAN-ERR status LEDs. Parameter codes C0168 through C0171 store detailed TRIP logbook history for rapid troubleshooting. While external issues such as short circuits (OC1), overvoltage (OU), or undervoltage (LU) can often be addressed by checking field wiring and power lines, internal errors like EEPROM corruptions (EER) or control board failures (H05) indicate hardware failure that cannot be serviced in the field. When an internal fault occurs, securing a tested replacement unit from ABC Industrial Parts ensures a reliable return to production.
Technical Specifications
| Manufacturer | Lenze |
| Part Number | 13431682 |
| Model / Type | EVS9321-EPV004 |
| Component Type | Servo Positioning Controller |
| Product Family | 9300 Servo |
| Rated Power | 0.75 kW |
| Nominal Supply Voltage | 400 V AC |
| Supply Voltage Range | 320 - 528 V AC |
| Rated Input Current | 2.2 A |
| Continuous Output Current | 2.5 A |
| Peak Output Current | 3.75 A |
| Output Voltage Range | 0 - 400 V AC |
| Max Output Frequency | 480 Hz |
| Switching Frequency | 8 kHz |
| Control Method | Field-oriented vector control |
Programming and Configuration
Programming and commissioning the Lenze 13431682 EVS9321-EPV004 positioning controller is managed using Lenze Global Drive Control (GDC) software or directly via the plug-in 9371BB XT Operating Keypad. The internal digital positioning profile engine allows advanced multi-axis motion profile definition, reducing the reliance on external high-speed PLC positioning cards.
The controller features internal non-volatile EEPROM memory capable of holding up to four independent parameter sets. This capability enables rapid field configuration without requiring a PC during replacement, provided the parameter sets have been previously archived or copied to the unit.
Communication and System Integration
The EVS9321-EPV004 includes an integrated CANbus system interface located at terminal connector X4, allowing high-speed peer-to-peer data interchange between multiple drives on a local axis network.
For higher-level network integration with industrial PLCs, the controller includes an Automation Interface (AIF) expansion slot X6. This modular slot supports plug-in communication modules including the Lenze 2131 and 2133 PROFIBUS-DP cards, as well as optional DeviceNet, INTERBUS, or RS-232/485 LECOM interfaces.
Diagnostics and Status Indication
Operational state monitoring on the EVS9321-EPV004 is performed using the status LEDs situated on the unit's front face. These indicators provide immediate status verification for active drive ready state, trip faults, and CANbus communication activity.
Comprehensive fault analysis is provided via the internal TRIP logbook, accessible through parameters C0168 to C0171 using either the 9371BB XT keypad or GDC software scope functions.
Status LED Indicators
| LED | Color/Status | Meaning |
|---|---|---|
| DRV-READY / Red LED (TRIP) | Red - Solid | Active TRIP fault state detected; drive is disabled due to an error condition |
| DRV-BUSY / Green LED (READY) | Green - Blinking or Continuous | Indicates drive operational status, controller inhibit, or active drive enabled state |
| CAN-RUN / CAN-ERR LEDs | Green/Red - Variable | Indicates operating status and error states of the integrated CAN system bus communication |
Replacement and Spare Part Considerations
When replacing an EVS9321-EPV004 drive, ensure that the full model type and part number match to maintain physical and electrical compatibility. Check that any optional Automation Interface (AIF) fieldbus module installed in slot X6 of the original drive is moved over to the replacement unit.
Because this unit stores positioning parameters and motor feedback configuration internally, a newly installed spare must be loaded with the machine-specific parameter set using GDC software or the 9371BB XT keypad before enabling the system.
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 / Earth fault | Instantaneous overcurrent on output terminals caused by short circuit, earth fault, or motor cable fault. | Short circuit in motor winding or cable, earth fault, excessively fast acceleration ramp. | Check motor cable and motor insulation for short circuits/earth faults. Inspect output power stage. If persistent without motor connected, internal power stage failure — return unit for repair. |
| OC2 | Acceleration overcurrent | Drive current limit exceeded during dynamic acceleration. | Acceleration time too short, mechanical overload, motor dimensioned too small. | Increase acceleration time ramp, reduce load inertia, check motor power rating. |
| OC5 | I*t overload | Drive thermal load limit reached due to continuous current over-utilization. | Continuous current exceeds rated continuous current 2.5 A for prolonged duration. | Check duty cycle, reduce mechanical load, verify motor size. |
| OU | Overvoltage DC link | DC bus voltage exceeds upper threshold limit (~770 V DC). | Regenerative energy from motor braking too high, deceleration time too short, brake chopper not operating or brake resistor open circuit. | Extend deceleration time, connect external brake resistor, check brake chopper circuit. |
| LU | Undervoltage DC link | DC bus voltage dropped below minimum operating limit (~285 V DC). | Mains supply voltage drop, phase loss on mains input, supply line fuse blown. | Check input mains voltage, verify line fuses and wiring connections. |
| OH | Overtemperature heatsink | Drive heatsink temperature exceeded upper safety limit. | Inadequate cabinet ventilation, fan failure, ambient temperature above allowable limit, clogged heatsink cooling fins. | Clean heatsink cooling fins, check control cabinet ventilation and internal fan operation. |
| OH4 | Overtemperature motor | Motor thermistor/PTC input triggered on terminals T1/T2. | Motor overheating due to continuous overload, cooling fan failure on motor. | Allow motor to cool down, reduce motor load, verify motor cooling. |
| OH7 | Overtemperature inside drive | Internal temperature inside drive enclosure exceeded safety threshold. | Excessive ambient temperature inside control cabinet. | Improve cooling inside control cabinet. |
| LP1 | Mains phase failure | Failure detected on one of the 3 input supply phases under load. | Loose mains wire connection, single-phase power supply drop, blown input fuse. | Check mains voltage on all three phases under load. |
| CE0 | Communication error AIF module | Communication failure between controller and expansion module in Automation Interface slot X6. | AIF fieldbus module loose, wrong configuration, fieldbus cable interrupted. | Check fieldbus module seated correctly in slot X6, check fieldbus wiring and terminal resistors. |
| CE1 | Communication error CAN system bus | Communication failure or bus-off state on integrated CAN bus system interface X4. | CAN bus cable defect, incorrect baud rate setting, missing termination resistors. | Check CAN cable connections, termination resistors (120 Ohm at both cable ends), and baud rate parameters. |
| EER | EEPROM memory fault | Error during access to internal EEPROM non-volatile parameter storage. | EEPROM corrupted or internal memory chip defect. | Re-initialize parameters to factory default settings. If error persists, internal hardware fault — replace or repair unit. |
| H05 | Internal hardware failure | Internal hardware or microcode failure detected during power-up or operation. | Faulty internal control board or power component. | Internal hardware fault — return unit for repair or replace unit. |
| NMAX | Maximum speed limit exceeded | Actual motor speed exceeded maximum allowable threshold setting. | Incorrect speed controller parameters, encoder runaway, mechanical load back-driving. | Check speed controller gains, check encoder feedback system and wiring. |
| PR0 | Positioning / Contouring error | Actual position deviates from target profile by more than max allowed contouring error limit. | Mechanical jamming, excessive acceleration dynamic, loop gain tuned too low, feedback failure. | Check axis mechanics for blockage, review position loop gain settings, increase contouring error limit window. |
Frequently Asked Questions
What is the rated power and output current of the Lenze EVS9321-EPV004?
The Lenze EVS9321-EPV004 has a rated power output of 0.75 kW, a continuous output current of 2.5 A, and a peak current rating of 3.75 A for up to 60 seconds.
How are parameters transferred when replacing an EVS9321-EPV004?
Parameters can be transferred using Lenze Global Drive Control (GDC) software or via the plug-in 9371BB XT Keypad. Up to four parameter sets can also be stored directly in the internal EEPROM memory.
Which encoder types are supported by the EVS9321-EPV004 feedback interface?
The drive features a flexible feedback interface that supports resolvers, incremental encoders, SinCos encoders, and Hiperface absolute encoders.
What does a solid red DRV-READY LED indicate on the controller?
A solid red DRV-READY (TRIP) LED indicates an active TRIP fault condition, causing the drive output stage to be disabled.
Which communication fieldbus modules can be installed in slot X6?
The Automation Interface slot X6 supports optional expansion cards, including the Lenze 2131/2133 PROFIBUS-DP modules, DeviceNet, INTERBUS, and LECOM RS-232/485 cards.
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