Lenze E94ASHE0034 – 9400 HighLine Single Servo Drive
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Product Information
The Lenze E94ASHE0034 is a 3-phase standalone servo drive belonging to the L-force 9400 HighLine product family. Operating on a main supply voltage range of 320 to 528 V AC at 45 to 65 Hz, this IP20 panel-mounted unit provides a rated motor power of 1.5 kW. It operates with a continuous rated output current of 3.2 A at a 4 kHz switching frequency and can supply peak output currents up to 6.4 A for dynamic motor acceleration. Control methods supported by the inverter include Servo Control, Sensorless Vector Control (SLVC), VFCplus, and standard V/f characteristic operation.
Interfacing with field systems is accomplished through integrated digital and analog I/O alongside a flexible multi-encoder interface compatible with resolver, Sin/Cos, Hiperface, SSI, and incremental encoders. Slot-based hardware expansion allows integration of optional safety modules and fieldbus cards such as the E94AYCER PROFINET, E94AYCET EtherCAT, and E94AYCPM PROFIBUS-DP modules. Commissioning a replacement unit is streamlined using pluggable Lenze MM200 or MM300 memory modules, which store parameter settings, firmware alignments, and OEM application programs directly on the card. This enables simple swap-and-run replacement without needing external engineering tools, though ABC Industrial Parts can assist when parameter extraction or card cloning from damaged units is necessary.
System diagnostics are communicated via four status LEDs for drive state and CAN communication, supplemented by an internal timestamped fault log buffer holding up to eight entries and compatibility with the optional E94AZKAE001 diagnostic keypad. Standard error codes indicate conditions such as 0x00110001 (OC1 output short circuit), 0x00130001 (LU DC bus undervoltage), or 0x00310001 (FAIL hardware fault). When line power, motor wiring, and external feedback connections test normal but hardware errors persist, internal power stage or micro-controller board failures are indicated. Because internal hardware components are not field-serviceable, sending the unit to ABC Industrial Parts for testing and repair or sourcing a fully tested exchange drive offers the fastest restoration of machine operations.
Technical Specifications
| Manufacturer | Lenze |
| Part number | E94ASHE0034 |
| Model / type | 9400 HighLine Single Drive |
| Product family | 9400 HighLine |
| Component type | Servo Drive |
| Rated power | 1.5 kW |
| Rated output current | 3.2 A |
| Peak output current | 6.4 A |
| Supply voltage range | 320 - 528 V AC |
| Supply frequency range | 45 - 65 Hz |
| Maximum output frequency | 599 Hz |
| Switching frequency | 4 kHz |
| Control methods | Servo Control, Sensorless Vector Control (SLVC), VFCplus, V/f Characteristic |
| Digital I/O channels | 8 Digital Inputs / 4 Digital Outputs |
| Analog I/O channels | 2 Analog Inputs / 2 Analog Outputs |
| Protection rating | IP20 |
Programming and Configuration
Engineering and motion programming for the Lenze E94ASHE0034 are handled through the Lenze Engineer software suite (HighLine variant) or the EASY Starter software. The HighLine tier enables comprehensive application setup, motion task sequencing, parameter set management, and real-time oscillographic tracing over the connected communication interface or CAN network.
Parameter management relies heavily on removable Lenze Memory Modules, including the MM200 and MM300 cards. All drive configuration sets, motor database files, and PLC/motion control task configurations are written to the card during initial commissioning. When servicing a machine in production, inserting a pre-configured memory module into a replacement drive transfers the complete application environment automatically upon 24 V power-up.
Communication and System Integration
The E94ASHE0034 drive features an onboard CANopen system bus interface for real-time drive-to-drive cross-communication and master control synchronization. Cabling requires shielded twisted-pair connections with standard 120-ohm termination resistors fitted at both physical ends of the network topology.
To integrate into broader fieldbus networks, the drive provides dedicated option card slots. Communication cards such as the E94AYCER (PROFINET), E94AYCET (EtherCAT), and E94AYCPM (PROFIBUS-DP) plug directly into Slot 2 of the unit, granting higher-level PLCs access to internal process data objects, diagnostic status words, and parameter matrices.
Diagnostics and Status Indication
Real-time monitoring of the Lenze E94ASHE0034 is provided by front-panel LED status indicators that indicate power stage readiness, overall fault conditions, and onboard CANopen bus states. An internal non-volatile memory buffer stores up to eight timestamped fault entries, which can be examined using the pluggable E94AZKAE001 diagnostic keypad or through Lenze Engineer software trace tools.
Status LED Indicators
| LED | Color/Status | Meaning |
|---|---|---|
| Ready | Green - Solid | Drive controller is ready for operation / DC bus charged |
| Error | Red - Solid / Flashing | Drive fault present. Flashing red indicates warning/trouble; solid red indicates active fault state requiring reset or return for repair if internal failure. |
| CAN RUN | Green - Solid / Flashing | CANopen status: operational state of onboard CAN bus system |
| CAN ERR | Red - Solid / Flashing | CANopen communication error / bus off state |
Replacement and Spare Part Considerations
Replacing an existing Lenze E94ASHE0034 servo drive requires verifying that the replacement unit shares identical physical power ratings (1.5 kW, 3.2 A continuous) and that hardware option cards match the original installation. Ensure that any safety module fitted in Slot 1 and fieldbus communication card in Slot 2 are transferred carefully to the spare unit.
Configuration transfer can be completed rapidly by moving the pluggable Memory Module (MM200 or MM300) from the original unit to the replacement drive. If the memory card itself is corrupted or damaged, a fresh card must be loaded with the machine project file using Lenze Engineer software prior to operation.
Before applying main supply power to a newly installed drive, verify that 24 V control power is established, encoder feedback cables are secure, and mains input line voltages fall within the specified range of 320 to 528 V AC.
Error Codes & Fault Codes
The following error codes may be displayed during operation or diagnostics:
| Code | Name | Description | Possible Cause | Recommended Action |
|---|---|---|---|---|
| 0x00110001 | OC1 Short Circuit / Earth Fault | Short circuit or earth fault detected at power stage output terminals (U, V, W). | Motor cable short circuit, motor winding fault, earth fault in motor wiring, or damaged drive output transistors. | Check motor wiring and insulation. Disconnect motor and test drive output. If error persists without motor connected, internal power stage failure occurred — return unit for repair. |
| 0x00110002 | OC2 Overcurrent during Acceleration | Drive output current exceeded peak current limit during acceleration phase. | Acceleration time too short, motor mechanical overload, incorrect motor parameters set in drive. | Increase acceleration time, check motor parameter settings, verify mechanical load is free to rotate. |
| 0x00120001 | OU DC Bus Overvoltage | DC bus voltage exceeded upper limit threshold (e.g. > 770 V DC / 800 V DC). | Regenerative energy from motor during deceleration too high, brake chopper non-functional, brake resistor open circuit or insufficient capacity. | Check deceleration ramps, verify external brake resistor connection and resistance value, check internal/external brake chopper configuration. |
| 0x00130001 | LU DC Bus Undervoltage | DC bus voltage fell below lower operational limit. | Mains supply failure, supply phase loss, supply voltage drop under load, DC bus charging circuit fault. | Check mains voltage and supply line connections. Inspect input fuses. If mains supply is normal but fault persists, internal power supply failure occurred — return unit for repair. |
| 0x00140001 | OH Heatsink Overtemperature | Drive heatsink temperature exceeded maximum safety threshold. | Cabinet ambient temperature too high, cooling fan blocked or failed, heatsink dirty, insufficient mounting clearances. | Inspect cabinet ventilation, clean heatsink fins, verify internal fan operation, lower ambient temperature. |
| 0x00140002 | OH4 Motor Overtemperature (I2t / KTY / PTC) | Motor temperature sensor reported excessive motor temperature or motor I2t monitoring limit exceeded. | Motor thermal overload, cooling fan failure on motor, broken temperature sensor wiring. | Allow motor to cool down, inspect motor cooling fan, check sensor wiring and thermal sensor type parameter setting. |
| 0x00150001 | I2t Inverter Overload | Drive thermal utilization monitor (I2t) reached critical limit due to continuous high current output. | Continuous current demand exceeds rated drive current rating (E94ASHE0034 rated at 3.2 A), low switching frequency with high load. | Check load requirements against drive rating. Reduce continuous current demand or upgrade drive power rating. |
| 0x00210001 | NMAX Speed Limit Exceeded | Actual motor speed exceeded maximum configured speed limit. | Encoder feedback fault, loose coupling, incorrectly tuned speed controller loops. | Check encoder wiring, mechanical coupling, and speed controller gain settings. |
| 0x00310001 | FAIL Internal System Hardware Fault | Hardware self-test failure detected on internal control board or micro-controller execution unit. | Internal circuit component failure, corrupted internal memory, hardware fault. | Cycle 24V control power to drive. If problem persists, internal hardware fault is confirmed — return unit for repair or replace device. |
| 0x00320001 | H01 Safety Module Fault / STO Fault | Safety module mismatch, channel failure, or safety feedback discrepancy. | Safety input signals out of sequence, safety module fault, bad contact in safety module slot 1. | Check safety wiring and dual-channel inputs. Ensure safety module in Slot 1 is seated properly. |
| 0x00410001 | CE0 CANopen System Bus Fault | Communication failure or watchdog timeout on onboard CANopen system bus interface. | CAN bus cable disconnected, termination resistor missing, incorrect baud rate, node ID conflict. | Check CAN cabling, 120-ohm termination resistors at both ends of network, baud rate settings and node addresses. |
| 0x00420001 | BUS Communication Module Fault | Communication error between drive control board and optional communication module in Slot 2. | Fieldbus cable disconnected, option module missing or unseated, network master timeout. | Check module seating in Slot 2, inspect network cabling, check fieldbus master PLC state. |
| 0x00510001 | ENC1 Encoder Feedback Loss / Error | Signal loss, track error, or communication error on motor feedback encoder/resolver interface. | Disconnected encoder cable, damaged shield/wiring, sensor signal fault, incorrect encoder supply voltage. | Check encoder wiring and screening. Verify encoder connector tightness. Replace encoder cable or motor encoder if signal non-responsive. |
| 0x00610001 | MEM Memory Module Error | Memory module in slot is unreadable, incompatible, or corrupted. | Memory module not inserted, corrupted configuration data on card, incompatible card type. | Re-insert Memory Module into slot. Re-format card or load clean project file using Lenze Engineer software. Replace Memory Module if hardware defect. |
Frequently Asked Questions
How do I transfer parameters to a replacement Lenze E94ASHE0034 drive?
Parameters can be transferred by moving the pluggable Lenze Memory Module (MM200 or MM300) from the old unit to the replacement drive. Upon boot, the drive automatically loads the stored settings. Alternatively, you can connect using Lenze Engineer software to upload and write project files.
What does a solid red Error LED indicate on the drive front panel?
A solid red Error LED indicates an active drive fault condition, such as output short circuit (0x00110001), DC bus overvoltage/undervoltage, or an internal hardware failure (0x00310001). Check the error log using the diagnostic keypad or Lenze Engineer software to identify the specific fault code.
Can the E94ASHE0034 drive communicate on PROFINET or EtherCAT networks?
Yes. While onboard communication includes CANopen, optional fieldbus modules such as the E94AYCER (PROFINET) or E94AYCET (EtherCAT) can be installed in Slot 2 for integration with host industrial networks.
What action should be taken if fault code 0x00310001 persists after power cycling?
Fault code 0x00310001 indicates an internal system hardware failure on the control board. If cycling 24 V control power does not clear the error, the internal circuits are damaged, requiring the unit to be sent for repair or replaced.
What encoder types are supported by the onboard feedback interface?
The multi-encoder interface supports resolvers, Sin/Cos encoders, Hiperface absolute encoders, SSI encoders, and standard incremental encoders.
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