Lenze E94ASHE0324 9400 HighLine Single Drive Servo Drive
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Product Information
The Lenze E94ASHE0324 is a high-performance single servo drive from the Servo Drives 9400 HighLine family, engineered for dynamic multi-axis motion and precise positioning applications. Designed for three-phase AC mains connections operating between 320 V AC and 550 V AC, this 15 kW rated inverter delivers a continuous output current of 32 A. To handle high dynamic acceleration cycles in demanding packaging, textile, printing, and material handling systems, the drive provides a 150% peak current capacity reaching 48 A for up to 5 seconds. The HighLine control software tier enables complex motion tasks including electronic gearing, dynamic cam profiles, and synchronized multi-axis control.
Interfacing the E94ASHE0324 with external machine automation relies on onboard CANopen system bus capability, 8 digital inputs, 4 digital outputs, 2 analog inputs, and 2 analog outputs. Motor feedback compatibility covers resolvers along with multi-encoder interfaces supporting SinCos, SSI, Hiperface, and TTL incremental encoders. Network expansion is facilitated through two option module slots that accommodate fieldbus cards such as EtherCAT (E94AYCER), PROFINET (E94AYCPR/E94AYCPM), or PROFIBUS (E94AYCEO). Commissioning a replacement unit requires restoring drive parameters and project configurations. This process is simplified by swapping the pluggable Lenze E94AYM series memory module, or by uploading configurations using Lenze Engineer software v2.0 or higher or the Lenze EASY Starter service tool. ABC Industrial Parts can support field service teams in sourcing exact-match replacement units and verifying memory module compatibility.
Diagnostic oversight is provided on the front panel via four status LEDs: DRV-READY, DRV-ERR, CAN-RUN, and CAN-ERR, which indicate drive state machine readiness, active faults, and CANopen communication status. Detailed operational data, diagnostic log files, and fault history buffers can be retrieved using Lenze Engineer or EASY Starter tools. First-line troubleshooting for conditions such as DC bus overvoltage (OU), undervoltage (LU), short circuit or earth fault (OC1), or CAN communication loss (CE0) involves inspecting supply line fusing, braking resistors, motor wiring, and bus line termination. When internal hardware self-test failures such as error code H01 occur, the internal circuit boards or power stage are non-field-serviceable. In such cases, exchanging the affected unit for a tested spare unit from ABC Industrial Parts offers a quick route to restoring production.
Technical Specifications
| Manufacturer | Lenze |
| Part Number | E94ASHE0324 |
| Model / Type | 9400 HighLine Single Drive |
| Component Type | Servo Drive |
| Product Family | Servo Drives 9400 |
| Supply Voltage Range | 320 - 550 V AC (3-phase) |
| Rated Power | 15 kW |
| Continuous Output Current | 32 A |
| Peak Output Current | 48 A (150% peak) |
| Switching Frequency | 4 kHz |
| Maximum Output Frequency | 599 Hz |
| Digital Inputs / Outputs | 8 Inputs / 4 Outputs |
| Analog Inputs / Outputs | 2 Inputs / 2 Outputs |
| Integrated Fieldbus | CANopen |
| Modular Slots | 2 Fieldbus Slots + 1 Safety Module Slot |
Programming and Configuration
Configuring the Lenze E94ASHE0324 servo drive is executed through the Lenze Engineer software suite version 2.0 or higher, or using the Lenze EASY Starter service tool for quick maintenance operations. The HighLine tier supports motion control tasks such as positioning, electronic gearboxes, dynamic cam profiling, and multi-axis synchronization. Engineers can define motion trajectories, profile parameters, and I/O mappings within the engineering software before downloading the complete project to the drive.
Parameter retention and hardware migration are centered around the pluggable Lenze E94AYM series memory module. The memory module stores the entire drive configuration, parameter set, and internal diagnostic log files. During unit replacement, transferring the existing E94AYM memory module into the replacement E94ASHE0324 drive transfers all operational settings automatically, avoiding the need for direct software connections or manual parameter re-entry on the plant floor.
Communication and System Integration
The E94ASHE0324 includes an integrated onboard CANopen system bus interface for multi-axis axis-to-axis communication and master PLC integration. CANopen diagnostic objects (0x1001 and 0x1003) allow real-time monitoring of communication states and error registers. Onboard control signals are wired via 8 digital inputs, 4 digital outputs, 2 analog inputs, and 2 analog outputs, enabling flexible direct integration with local sensors, control switches, and external monitoring systems.
To connect into higher-level industrial networks, the drive features two modular expansion slots alongside a dedicated safety module slot. Optional communication cards allow seamless integration into EtherCAT (E94AYCER), PROFINET (E94AYCPR or E94AYCPM), or PROFIBUS-DP (E94AYCEO) networks. Motor feedback integration is equally flexible, accepting resolver signals as well as multi-encoder formats including SinCos, SSI, Hiperface, and TTL incremental encoders.
Diagnostics and Status Indication
Front-panel status LEDs give real-time feedback on drive status and fieldbus communication. The DRV-READY LED indicates operational readiness of the drive state machine, while DRV-ERR alerts operators to active fault conditions or permanent hardware failures. Network communication over CANopen is tracked via the CAN-RUN and CAN-ERR LEDs, which display operational states, pre-operational states, or bus-off conditions.
For detailed diagnostic analysis, technicians can access the drive fault history buffer and diagnostic log file stored on the memory module using Lenze Engineer or EASY Starter software. CANopen diagnostic parameters 0x1001 and 0x1003 also report error status directly to the master controller over the system bus.
Status LED Indicators
| LED | Color/Status | Meaning |
|---|---|---|
| DRV-READY | Green - Solid/Flashing | Indicates operational readiness of the drive state machine. |
| DRV-ERR | Red - Solid/Flashing | Indicates an active drive fault/trip condition. Permanently lit indicates hardware failure. |
| CAN-RUN | Green - Solid/Flashing | Indicates CANopen communication state (Operational / Pre-Operational). |
| CAN-ERR | Red - Solid/Flashing | Indicates CANopen bus errors, warnings, or bus-off conditions. |
Replacement and Spare Part Considerations
When swapping out a faulty Lenze E94ASHE0324 servo drive, matching the part number and power rating is essential. The drive requires a 3-phase AC mains supply between 320 V and 550 V AC to supply its rated 15 kW / 32 A output. Verify that option cards installed in expansion slot 1 and slot 2 (such as E94AYCER or E94AYCPR) are transferred to the replacement drive to maintain network compatibility with higher-level automation controllers.
To restore motion profiles, motor feedback calibrations, and fieldbus communication settings, transfer the pluggable Lenze E94AYM memory module from the original drive to the replacement unit. Ensure the drive is fully powered down before removing or inserting memory modules or fieldbus option cards. If the memory module is unavailable or damaged, parameter backups can be reloaded using Lenze Engineer software v2.0 or higher.
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 | Excessive overcurrent in motor phase or earth leakage detected. | Short circuit in motor cable, short circuit in motor winding, grounding fault, motor cable excessively long. | Check motor and motor wiring for short circuit and earth fault. Verify motor line length and filtering. |
| OC5 | I*t Motor overload | Calculated thermal load of motor exceeds maximum permissible value. | Continuous mechanical overload on motor, incorrect motor parameter settings, inadequate motor cooling. | Check drive dimensioning and load mechanism. Verify motor thermal parameters and cooling fan operation. |
| OU | DC Bus Overvoltage | DC bus voltage exceeded upper limit threshold. | Excessive regenerative energy during deceleration, deceleration time set too short, braking resistor missing or damaged, braking chopper fault. | Increase deceleration time, verify external braking resistor value and connection, check integrated braking module. |
| LU | DC Bus Undervoltage | DC bus voltage fell below lower limit threshold. | Mains supply voltage too low, mains phase failure, power supply interruption, line fuse blown. | Check supply line voltage and AC fuses. Check power supply wiring. |
| OH | Heatsink Over-temperature | Inverter heatsink temperature exceeds maximum allowable threshold. | Insufficient cabinet ventilation, cabinet ambient temperature too high, dirty heatsink cooling fins, internal fan failed. | Clean heatsink cooling fins, check control cabinet ventilation, ensure internal drive fan is functioning properly. |
| OH4 | Drive Internal Over-temperature | Temperature inside the servo drive enclosure reached critical level. | Extreme ambient temperature inside control cabinet, internal fan broken. | Improve cabinet cooling and airflow around drive, replace internal fan. |
| OH7 | Motor Over-temperature (PTC / KTY) | Motor temperature sensor reported excessive motor temperature. | Motor thermal overload, blocked cooling air duct on motor, motor sensor wire broken or disconnected. | Allow motor to cool down, inspect motor cooling fan, check motor temperature sensor resistance and wiring. |
| CE0 | Communication error CAN system bus | CANopen system bus communication interrupted or lost. | Bus cable disconnected, incorrect baud rate setting, duplicate node address, missing bus termination resistor. | Check CANbus cables, connectors, termination resistors (120 Ohm), and node IDs. |
| CE1 | Communication error Option Module Slot 1 | Communication to module in extension slot 1 interrupted. | Fieldbus cable disconnected, module improperly seated in slot, master PLC connection offline. | Check option module seating, fieldbus cabling, master controller status. |
| NMAX | Speed Limit Exceeded | Actual motor speed exceeded maximum permissible limit. | Control loop instability, incorrect speed controller tuning, encoder feedback noise or failure. | Check speed controller parameters, check encoder signal lines and shielding. |
| PMAX | Position Limit Exceeded | Actual position exceeded software limit switches or hardware limit switches. | Position profile misconfigured, limit switch activated unexpectedly, lost homing / position reference. | Re-home drive, check limit switch state and position boundary parameters. |
| H01 | Internal Hardware Fault | Internal control unit or power stage hardware self-test failure. | Internal circuit board failure, gate driver failure, corrupted internal EEPROM. | Internal hardware failure — non-field-serviceable. Replace drive unit or send for factory repair. |
Frequently Asked Questions
What software is required to configure the Lenze E94ASHE0324 servo drive?
The drive is configured using Lenze Engineer software version 2.0 or higher. For routine maintenance and diagnostics, the Lenze EASY Starter service tool can also be used.
How do I transfer parameters to a replacement E94ASHE0324 drive?
Parameters can be transferred by moving the pluggable Lenze E94AYM memory module from the old drive to the new unit, or by uploading the project configuration backup via Lenze Engineer software.
What feedback devices are supported by the E94ASHE0324?
The drive supports resolvers as well as multi-encoder inputs including SinCos, SSI, Hiperface, and TTL incremental encoders.
What does the DRV-ERR LED indicating solid red mean?
A permanently lit red DRV-ERR LED indicates a permanent hardware failure within the drive that cannot be cleared by a standard reset.
What fieldbus options are available for the 9400 HighLine drive?
The drive includes onboard CANopen and features two expansion slots that accept optional communication modules for EtherCAT (E94AYCER), PROFINET (E94AYCPR/E94AYCPM), and PROFIBUS-DP (E94AYCEO).
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