Lenze 034733340162 EVS9321-EPV004 9300 Servo Drive
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Product Information
The Lenze 034733340162 (model EVS9321-EPV004) is a 0.75 kW servo drive from the Lenze 9300 Servo family designed for dynamic motion control and multi-axis positioning. Operating with a supply voltage range of 320 V AC to 528 V AC (3-phase 400V nominal), this inverter delivers a rated output current of 2.5 A and supports a maximum peak output current of 3.75 A for up to 60 seconds. Featuring panel-mount EP construction, the unit provides compact installation within control cabinets for packaging machinery, material transport systems, conveyor drives, and automotive manufacturing equipment.
Interfacing with host systems and motion networks relies on the integrated CAN system bus operating up to 500 kbps alongside an Automation Interface (AIF) slot that supports option modules such as PROFIBUS-DP (EMF2133IB), INTERBUS (EMF2113IB), or serial LECOM RS-232/485. Motor feedback signals are accepted through dedicated Sub-D connectors compatible with resolvers, incremental encoders, and SinCos feedback devices. Commissioning a replacement EVS9321-EPV004 drive requires matching the V004 firmware variant and restoring application parameter sets, which are stored in onboard non-volatile memory supporting up to four distinct parameter sets. Configuration transfer can be executed using the pluggable Keypad 9371BB module or Lenze Global Drive Control (GDC) software, with ABC Industrial Parts available to assist when parameter extraction from a donor unit or backup recovery is necessary.
Diagnostic information is indicated directly through three front status LEDs, where a solid or blinking Green LED signals operational status or controller inhibition, a solid Yellow LED indicates an active current or torque limitation, and a solid Red LED flags an active TRIP fault. Detailed diagnostic analysis is available using the Keypad 9371BB display, the GDC diagnostic monitor and history buffer, or parameter C0168 TRIP log. Initial troubleshooting steps include checking motor wiring for short circuits (OC1) or ground faults (OC2), inspecting supply line fuses for undervoltage conditions (LU), checking brake chopper connections for DC bus overvoltage (OU), verifying motor thermals at terminal strip X10 (OH4), and testing feedback cable connectors (SD2). Unrecoverable internal EEPROM errors (EER) or hardware processor faults (H05) are non-field-serviceable board-level issues where obtaining a tested replacement unit or repair through ABC Industrial Parts provides a direct route back to production.
Technical Specifications
| Rated Power | 0.75 kW |
| Supply Voltage Range | 320 V AC – 528 V AC |
| Output Voltage | 400 V AC |
| Rated Output Current | 2.5 A |
| Peak Output Current | 3.75 A (for 60 s) |
| Maximum Output Frequency | 480 Hz |
| Switching Frequency | 8 kHz |
| Digital I/O | 6 Inputs / 4 Outputs |
| Analog I/O | 2 Inputs / 2 Outputs |
| Integrated System Bus | CAN / CANopen (up to 500 kbps) |
| Mounting Style | Panel Mount (EP) |
Programming and Configuration
Configuring the Lenze EVS9321-EPV004 servo drive is performed using Global Drive Control (GDC) engineering software or directly via the pluggable Keypad 9371BB operating module. The drive features onboard non-volatile EEPROM memory capable of storing up to four complete parameter sets internally, allowing flexible application management and fast device swapping without re-entering parameter tables manually.
When staging a replacement unit, aligning the firmware version is critical for parameter set compatibility. The V004 firmware variant must match the existing drive setup to ensure parameters downloaded from GDC or copied using the Keypad 9371BB transfer correctly without software translation errors. Historical diagnostic data and operating parameters can also be extracted and reviewed using parameter C0168 within the TRIP memory log.
Communication and System Integration
System integration on the Lenze EVS9321-EPV004 drive is anchored by an integrated CAN system bus capable of transmission speeds up to 500 kbps. This onboard CAN/CANopen interface enables fast inter-drive coupling, decentralized positioning control, and multi-axis synchronization without requiring external controller processing overhead.
For fieldbus networking, the drive includes a dedicated Automation Interface (AIF) slot. This expansion slot accepts option modules such as the EMF2133IB PROFIBUS-DP module, EMF2113IB INTERBUS module, or serial LECOM RS-232/485 adapters. Motor feedback signals are routed through standard Sub-D connectors, supporting resolvers, incremental encoders, and SinCos devices across maximum output frequencies up to 480 Hz.
Diagnostics and Status Indication
Visual status indication on the EVS9321-EPV004 is provided by three LEDs located on the front panel. System readiness, active operating thresholds, and shut-down fault conditions are signaled immediately through specific LED state combinations to assist technical staff during cabinet inspections.
Detailed diagnostic feedback and fault history can be accessed through the Keypad 9371BB module or via GDC software using the diagnostic monitor and history buffer. Parameter C0168 maintains a log of recent TRIP events, allowing maintenance personnel to isolate fault sequences related to overcurrent, line drops, thermal conditions, or feedback loss.
Status LED Indicators
| LED | Color/Status | Meaning |
|---|---|---|
| Green LED | Green - Solid / Blinking | Operational status / Ready. Blinking indicates normal operation or controller inhibition. |
| Red LED | Red - Solid | TRIP / Fault active. Drive shut down due to active error condition. |
| Yellow LED | Yellow - Solid | Warning or active limitation (e.g. current limit / torque limit reached). |
Replacement and Spare Part Considerations
Replacing a Lenze EVS9321-EPV004 requires verifying that the physical panel-mount EP construction and V004 firmware revision match the original drive. Because internal parameter structures are dependent on firmware compatibility, confirming the V004 designation prevents parameter upload and download errors during replacement commissioning.
Before removing an existing unit, parameter sets should be saved to the Keypad 9371BB module or backed up via GDC software. Once the replacement drive is mounted and wired—including 3-phase mains connections, digital/analog I/O, terminal strip X10, and Sub-D encoder interfaces—the saved parameter sets must be loaded to restore motor control settings, current limits, and CAN bus node addressing.
In scenarios where a faulted unit exhibits internal EEPROM errors (EER) or hardware processor failures (H05), board-level repair or swapping with a fully tested exchange module provides the most reliable recovery path.
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 | Output peak current exceeded allowable limit due to short circuit or severe earth fault. | Short circuit in motor cable, short circuit in motor windings, acceleration ramp too short. | Check motor and motor wiring for short circuits. Extend acceleration time. |
| OC2 | Earth fault | Ground fault detected on inverter output terminals. | Motor cable ground breakdown, insulation breakdown in motor stator. | Inspect motor cable insulation and check motor ground resistance. |
| OC5 | I x t motor overload | Continuous motor load threshold exceeded over time. | Mechanical overload, motor undersized for application, binding mechanical parts. | Check machine mechanics for binding; verify motor load profile and sizing. |
| OU | DC bus overvoltage | Intermediate circuit DC voltage exceeded threshold limit. | Regenerative energy from motor during fast deceleration, braking chopper not active or defective, braking resistor open circuit. | Increase deceleration ramp time; check braking resistor connection and chopper settings. |
| LU | DC bus undervoltage | DC bus voltage fell below minimum allowable operating voltage. | Mains voltage line drop, blown input fuse, mains phase failure. | Check supply voltage, input wiring, line reactors, and supply fuses. |
| OH | Heatsink overtemperature | Drive heatsink temperature exceeded safety threshold. | Dirty heatsink fins, internal fan failure, inadequate cabinet ventilation, ambient temperature too high. | Clean heatsink, inspect enclosure cooling fans, ensure clearance around unit. |
| OH4 | Motor thermal sensor error / overtemperature | Motor PTC or thermal switch signal triggered high motor temperature. | Motor overtemperature, thermal switch cable break, PTC sensor open circuit. | Allow motor to cool; check PTC cable connections at X10 terminal strip. |
| SD2 | Resolver / encoder feedback error | Feedback signal missing, noisy, or broken cable detected at encoder input. | Feedback cable disconnected or broken, missing shield grounding, defective encoder/resolver. | Check feedback cable connections, connector pins, grounding, and encoder. |
| CE0 | AIF communication fault | Communication failure between control board and optional AIF module. | Fieldbus network fault, broken cable, incorrect termination, loose module. | Check fieldbus cabling, module seating in slot, and network parameters. |
| EER | EEPROM fault | Internal EEPROM checksum error or parameter read/write fault. | Data corruption in non-volatile memory or internal hardware failure. | Internal hardware or memory defect. Reload factory defaults; if error persists, internal hardware fault — replace unit or return for repair. |
| H05 | Internal hardware error | Controller self-test detected internal hardware failure. | Internal power supply defect, processor error, or control board fault. | Internal hardware fault — non-field-serviceable. Unit must be replaced or returned for repair. |
Frequently Asked Questions
What software and hardware are required to configure the Lenze EVS9321-EPV004?
Parameter configuration and diagnostics are performed using Lenze Global Drive Control (GDC) software or directly on the drive using the pluggable Keypad 9371BB operating module.
Can I transfer parameters directly from a faulty drive to a replacement unit?
Yes. Onboard non-volatile EEPROM memory holds up to four parameter sets, which can be backed up and restored using the Keypad 9371BB or saved via GDC software. The replacement drive must share the V004 firmware variant for full parameter set compatibility.
What fieldbus option modules work with the EVS9321-EPV004 AIF slot?
The Automation Interface (AIF) slot accepts optional communication modules including the EMF2133IB PROFIBUS-DP module, EMF2113IB INTERBUS module, and LECOM RS-232/485 modules.
What do the front panel status LEDs indicate?
The Green LED indicates operational readiness or controller inhibition, the Yellow LED signals an active current or torque limitation warning, and the Red LED indicates an active TRIP fault condition.
How should fault codes EER or H05 be resolved?
Fault code EER indicates an EEPROM memory checksum error, while H05 indicates an internal controller hardware error. Both signal non-field-serviceable internal failures that require drive replacement or hardware repair.
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Specific firmware and hardware versions
If you are working with specific hardware or firmware versions that are no longer available from the manufacturer, ABC Industrial Parts is your partner. When making your enquiry, clearly state which versions you need, we will then look at the possibilities of supplying those versions, so that your installations continue to function optimally.
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