Lenze E94AMHE0024 Multi Drive HighLine Axis Module
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Product Information
The Lenze E94AMHE0024 is a HighLine series Multi Drive axis module designed for central DC bus system architectures within the Lenze Servo Drives 9400 family. Operating with a nominal 565 V DC power link across an input range of 430 V to 775 V DC, this compact servo drive delivers 2.5 A continuous output current and up to 5.0 A peak output current to control 0.75 kW synchronous or asynchronous motors. By integrating advanced HighLine motion control functions directly into the hardware—including positioning, electronic gearboxes, and complex cam profiles—the module executes high-precision motion profiles independently, reducing processing overhead on higher-level machine controllers.
For connection and system integration, the E94AMHE0024 provides a universal 15-pin Sub-D connector for motor feedback systems, including resolvers, incremental encoders, and absolute encoders using Hiperface, EnDat 2.1/2.2, or SSI protocols. Local I/O includes 8 digital inputs, 4 digital outputs, 2 analog inputs, and 2 analog outputs, alongside built-in CANopen system bus connectivity and dual MXI slots for optional fieldbus interface modules such as EtherCAT, PROFINET, PROFIBUS, or EtherNet/IP. When replacing a faulty unit, commissioning is simplified by transferring the pluggable non-volatile memory module from the E94AYM series, which carries all drive parameters, configuration settings, and motion programs. ABC Industrial Parts can assist with parameter verification and spare unit preparation to ensure smooth device replacement.
System status and operating faults are indicated on-board via status LEDs for DRIVE READY, DRIVE ERROR, and BUS STATUS, supported by fieldbus error registers and software logbooks in Lenze Engineer. First-line troubleshooting involves checking DC bus link connections across the 430 V to 775 V DC range, motor feedback cabling, motor thermal sensors, and fieldbus wiring or termination resistors. Internal component failures or memory errors, such as fault code 0x00110001, indicate non-field-serviceable board faults where a tested replacement drive or complete repair service through ABC Industrial Parts offers the most dependable route back to production.
Technical Specifications
| Manufacturer | Lenze |
| Part Number | E94AMHE0024 |
| Model / Type | Multi Drive HighLine Axis Module |
| Product Family | Servo Drives 9400 |
| Component Type | Servo Drive Axis Module |
| Nominal DC Supply Voltage | 565 V DC |
| DC Supply Voltage Range | 430 - 775 V DC |
| Rated Output Current | 2.5 A |
| Maximum Output Current | 5.0 A |
| Typical Motor Power | 0.75 kW |
| Maximum Output Voltage | 480 V AC |
| Maximum Output Frequency | 599 Hz |
| Switching Frequency | 4 kHz |
| Digital Inputs | 8 |
| Digital Outputs | 4 |
| Analog Inputs | 2 |
| Analog Outputs | 2 |
Programming and Configuration
The Lenze E94AMHE0024 9400 HighLine axis module utilizes the Lenze Engineer software engineering tool for drive configuration, commissioning, parameter setting, and motion profile development. Integrated motion functionality enables execution of electronic camming, electronic gearing, and multi-axis synchronized movement directly within the drive hardware, eliminating the need for complex motion execution commands on an external master PLC.
Drive configurations, parameter sets, and application profiles are stored on a pluggable non-volatile memory module from the Lenze E94AYM series. During routine maintenance or axis replacement, this memory module can be removed from the original unit and inserted into a replacement drive, transferring all operational parameters and configuration settings without requiring programming tools or software connections.
Communication and System Integration
The E94AMHE0024 features built-in CANopen system bus connectivity on its main board for rapid drive-to-drive synchronization and system communication. Network capability is expanded through two integrated MXI extension slots, which accept plug-in fieldbus option modules including EtherCAT (E94AYAEC), PROFINET (E94AYAER), PROFIBUS (E94AYAEP), and EtherNet/IP (E94AYAEI).
Centralized power link integration is achieved through direct connection to Lenze 9400 Multi Drive DC power supply modules (E94AR series) across a common 565 V DC bus, reducing control cabinet space and energy losses. Functional safety integration is accommodated via dedicated safety module slots supporting Safe Torque Off (STO E94AYAE) and extended safety option modules (E94AYAF).
Diagnostics and Status Indication
Drive status and operational faults are monitored through on-board status LEDs and software diagnostic capabilities. Software tools within Lenze Engineer provide real-time oscilloscope viewing and logbook recording functions. System bus and fieldbus error registers—accessible via CANopen objects 0x1001 and 0x603F—allow central control systems to evaluate drive states directly over the network.
Status LED Indicators
| LED | Color/Status | Meaning |
|---|---|---|
| DRIVE READY | Green - Solid / Flashing | Indicates operational readiness and drive execution status |
| DRIVE ERROR | Red - Solid / Flashing | Indicates internal, power, or operational fault |
| BUS STATUS | Active | Indicates CANopen system bus or fieldbus network status |
Replacement and Spare Part Considerations
When replacing a Lenze E94AMHE0024 axis module, confirm that the spare unit matches the exact current rating of 2.5 A continuous (5.0 A peak) and the HighLine functional class. Ensure all installed option modules—including MXI fieldbus communication cards and safety option modules—are transferred to the corresponding slots on the replacement axis module.
Transferring the pluggable memory module (E94AYM series) from the original drive to the replacement unit restores parameter settings, motion profiles, and fieldbus node identifiers. Verify that DC bus connections to the central E94AR power supply module are properly torque-tightened and that motor encoder connections on the 15-pin Sub-D interface are secure before powering up the shared DC bus. Although the 9400 HighLine series is in phase-out status, existing machines can be serviced directly or migrated to the successor Lenze i950 series.
Error Codes & Fault Codes
The following error codes may be displayed during operation or diagnostics:
| Code | Name | Description | Possible Cause | Recommended Action |
|---|---|---|---|---|
| 0x00110001 | System Fault / Internal Error | Internal hardware or control board diagnostic error detected during startup or execution. | Internal component failure or memory corrupted. | Power cycle drive. If problem persists, internal hardware fault — return unit for repair or replace device. |
| 0x00220001 | DC Bus Overvoltage (OU) | Voltage on the DC bus exceeds upper threshold level (approx. 775 V DC). | Deceleration ramp too steep, braking resistor missing or broken, regeneration energy too high. | Extend deceleration time, check braking chopper and brake resistor connection, check mains voltage. |
| 0x00220002 | DC Bus Undervoltage (LU) | Voltage on the DC bus dropped below lower threshold level (approx. 430 V DC). | Mains supply power outage, power supply module fault, DC bus connection loose. | Check supply voltage into power supply module, verify DC bus link connections. |
| 0x00230001 | Overcurrent Motor Phase (OC1) | Output current exceeded peak limit value. | Short circuit or ground fault on motor cable, motor parameter mismatch, acceleration ramp too fast. | Check motor and wiring for short circuits and ground faults, verify motor control parameters. |
| 0x00250001 | Heatsink Over-Temperature (OH) | Heatsink temperature exceeded maximum permissible limit. | Inadequate cabinet ventilation, ambient temperature too high, cooling fan blocked or failed, continuous overload. | Clean heatsink cooling fins, check control cabinet fan operation, reduce load/current demand. |
| 0x00250002 | Motor Over-Temperature (OH4) | Motor thermal sensor (PTC/KTY/TP60) indicated motor overheating. | Motor thermal overload, cooling fan failure on motor, incorrect thermal sensor evaluation parameter. | Allow motor to cool down, inspect motor cooling, verify motor thermistor connection and settings. |
| 0x00310001 | Encoder / Resolver Fault (Sd1) | Signal loss or communication error with motor feedback system. | Encoder cable disconnected or damaged, shielding/EMC noise issue, faulty encoder sensor. | Check encoder cable connection and shielding, check supply voltage to encoder, replace encoder if defective. |
| 0x00320001 | I2t Motor Overload | Calculated motor thermal load (I2t) exceeded threshold limit. | Continuous operation above rated motor current, mechanical blockage or binding. | Check mechanical load and duty cycle, lower motor load, check motor current configuration. |
| 0x00510001 | CAN Communication Timeout | Loss of communication on on-board CANopen system bus. | Bus cable broken, missing terminating resistors, node ID mismatch, master offline. | Inspect CAN wiring and 120 ohm terminations, verify baud rate and node IDs, check master PLC. |
| 0x00520001 | Fieldbus Module Error | Communication failure or configuration error on optional MXI fieldbus module. | Fieldbus module loose, network cable disconnected, invalid fieldbus parameters. | Check option module seating in slot, verify fieldbus cable and master controller connection. |
Frequently Asked Questions
What are the output power and current ratings for the Lenze E94AMHE0024?
The Lenze E94AMHE0024 axis module is rated for 0.75 kW typical motor power, providing 2.5 A continuous output current and up to 5.0 A peak output current with a maximum output voltage of 480 V AC.
How is power supplied to the E94AMHE0024 module?
Power is supplied through a common DC bus link connected to a Lenze 9400 Multi Drive power supply module (E94AR series), operating at a nominal 565 V DC within an input range of 430 V to 775 V DC.
How are parameters transferred to a spare E94AMHE0024 drive?
Parameters, configurations, and motion profiles are stored on a pluggable non-volatile memory module (E94AYM series). Inserting the original memory module into the replacement drive restores all settings without software tools.
Which motor encoders can be connected to the E94AMHE0024?
The module includes a universal 15-pin Sub-D connector compatible with resolvers, incremental encoders, and absolute encoders supporting Hiperface, EnDat 2.1/2.2, or SSI protocols.
What fieldbus networks are supported on the E94AMHE0024?
The module includes a built-in CANopen system bus. Dual MXI extension slots accept option modules for EtherCAT (E94AYAEC), PROFINET (E94AYAER), PROFIBUS (E94AYAEP), and EtherNet/IP (E94AYAEI).
What should be done if fault code 0x00110001 is displayed?
Fault code 0x00110001 indicates an internal hardware diagnostic fault or memory corruption. Power cycle the drive; if the error persists, the unit has an internal hardware fault and requires repair or replacement.
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