Lenze E94ASHE0044 Single Drive HighLine Servo Controller
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Product Information
The Lenze E94ASHE0044 is a single-axis servo drive controller within the L-force Servo Drives 9400 product family, built in the 9400 HighLine configuration. Designed for control cabinet installation with an IP20 degree of protection, this drive operates on a 3-phase mains supply voltage from 320 V AC to 528 V AC with a rated mains current of 3.6 A. Delivering a rated motor power output of 1.5 kW and a continuous output current of 4.0 A up to 480 V AC output, the drive accommodates dynamic peak demand up to 8.0 A. Operating at an 8 kHz switching frequency, it supports maximum output frequencies up to 599 Hz to provide high-precision speed, torque, and position control in automated machinery across packaging, textile manufacturing, and material handling systems.
Connecting the unit into control networks is enabled through an integrated CANopen system bus alongside a universal multi-encoder feedback interface that accepts Resolvers, SinCos, Hiperface, SSI, and EnDat systems. Local control is managed via 8 digital inputs, 4 digital outputs, 2 analog inputs, and 2 analog outputs, while two option module slots accommodate fieldbus interfaces including EtherCAT (E94AYAET), PROFINET (E94AYAER), PROFIBUS (E94AYAPB), or EtherNet/IP (E94AYAEI). When commissioning a replacement drive, the E94ASHE0044 uses a pluggable MM500 or MM1000 memory module to support software-free parameter transfer in the field. Swapping the memory module directly from the donor unit into the spare transfers all parameters and application data without connecting a PC. Offline engineering, parameterization, and diagnostic tasks can also be carried out using the Lenze L-force Engineer software suite, a Keypad XT display module (E94AZKAE001), or a USB Diagnostic Adapter (E94AZCUS), with ABC Industrial Parts supplying tested replacement drives and hardware support.
Diagnostic feedback and status monitoring rely on four front-panel LED indicators—DRV-RDY, DRV-ERR, CAN-RUN, and CAN-ERR—which show drive initialization, active enable status, bus communication state, and fault conditions. Additional status analysis is accessible through internal parameter readouts including error history memory C00150 and device status C00009. Initial field troubleshooting should include checking motor cabling, ground integrity, line supply voltage, encoder wiring, and 120-ohm CAN network termination. When internal hardware failures occur—such as dynamic power stage shorts or internal component faults—the unit cannot be serviced in the field; installing a fully tested replacement or utilizing repair services through ABC Industrial Parts ensures a quick recovery to operational status.
Technical Specifications
| Supply voltage range | 320 - 528 V AC |
| Rated mains current | 3.6 A |
| Continuous output current | 4.0 A |
| Maximum output current | 8.0 A |
| Maximum output voltage | 480 V AC |
| Rated power | 1.5 kW |
| Maximum output frequency | 599 Hz |
| Switching frequency | 8 kHz |
| IP protection rating | IP20 |
| Digital inputs | 8 |
| Digital outputs | 4 |
| Analog inputs | 2 |
| Analog outputs | 2 |
Programming and Configuration
The Lenze E94ASHE0044 servo drive utilizes the Lenze L-force Engineer software suite for project engineering, parameter adjustment, and motion control setup. HighLine firmware models support extensive internal motion functionality, including single-axis positioning, electronic camming, dynamic speed and torque profiles, and customizable function block structures.
Parameter retention and program transfer are managed through removable MM500 or MM1000 memory modules. When replacing a drive unit in an operating line, physically moving the existing memory card into the replacement drive automatically loads all operating parameters and application code without requiring engineering software or network downloads.
Communication and System Integration
An integrated CANopen system bus interface provides high-speed communication and multi-axis synchronization directly from the main control unit. For broader plant automation architectures, two option module slots accept fieldbus expansion cards, including PROFINET (E94AYAER), EtherCAT (E94AYAET), PROFIBUS (E94AYAPB), and EtherNet/IP (E94AYAEI).
Feedback integration features a universal encoder interface capable of evaluating Resolver, SinCos, Hiperface, SSI, and EnDat encoder signals. Direct control signal wiring is accommodated on the front terminal strip, which provides 8 digital inputs, 4 digital outputs, 2 analog inputs, and 2 analog outputs.
Diagnostics and Status Indication
Front-panel LED indicators display real-time drive and bus communication status. The DRV-RDY LED signals drive initialization and active state, while the DRV-ERR LED indicates active warnings or critical trips. System bus activity is tracked by the CAN-RUN and CAN-ERR LEDs.
Detailed diagnostic inspections can be performed by reading status parameter C00009 and error history parameter C00150. These values can be viewed using the Keypad XT module (E94AZKAE001), the USB Diagnostic Adapter (E94AZCUS), or directly within the online diagnostic window of L-force Engineer.
Status LED Indicators
| LED | Color/Status | Meaning |
|---|---|---|
| DRV-RDY | Green - Solid/Flashing/Off | Drive Ready indicator. Solid Green: Drive initialized and ready. Flashing Green: Drive active/enabled. Off: No supply voltage or drive error. |
| DRV-ERR | Red - Solid/Flashing/Off | Drive Error indicator. Solid Red: Critical fault active (drive tripped). Flashing Red: Warning active. Off: No error. |
| CAN-RUN | Green - Solid/Flashing/Single Flash | CANopen network status. Solid Green: Operational state. Flashing Green: Pre-operational state. Single Flash: Stopped state. |
| CAN-ERR | Red - Solid/Flashing | CANopen error status. Solid Red: Bus off or major communication error. Flashing Red: Controller frame error / limit reached. |
Replacement and Spare Part Considerations
When installing a replacement Lenze E94ASHE0044 servo drive, ensure the power specification (1.5 kW, 4.0 A output) matches the existing unit. Mount the drive vertically inside an IP20-rated enclosure, ensuring unobstructed airflow over the heatsink cooling fins to prevent thermal fault conditions.
To complete a fast field swap without specialized software, transfer the original MM500 or MM1000 memory card into the replacement unit. Ensure any installed optional communication cards (such as EtherCAT E94AYAET or PROFINET E94AYAER) and safety modules are removed from the defective drive and installed correctly into the replacement hardware before restoring power.
Error Codes & Fault Codes
The following error codes may be displayed during operation or diagnostics:
| Code | Name | Description | Possible Cause | Recommended Action |
|---|---|---|---|---|
| 0x0011 | Short circuit in motor circuit | Short circuit or severe overcurrent detected in motor phase wiring or power transistor stage. | Short circuit in motor cable, phase-to-phase short, motor winding failure, or internal inverter output stage failure. | Inspect motor cabling and insulation. Measure motor winding resistance. If cabling and motor are intact, internal hardware fault requires returning unit for repair. |
| 0x0012 | Earth fault | Ground fault detected on motor connection phases. | Motor cable phase shorted to PE ground, motor winding breakdown to frame, ground leakage current exceeding threshold. | Check motor power cable and terminal box for ground contact. Perform insulation check on motor. |
| 0x0021 | DC bus overvoltage | DC bus voltage exceeded upper threshold (approx. 800 V DC). | Excessive regenerative energy during deceleration, brake chopper resistor disconnected or open-circuit, deceleration ramp too short. | Increase deceleration time, check braking resistor resistance and connection, verify line supply voltage. |
| 0x0022 | DC bus undervoltage | DC bus voltage dropped below minimum operating limit. | Mains supply power interruption, blown main fuse, line phase loss, excessive voltage dip during heavy load. | Check mains AC supply lines, supply fuses, and power connections. |
| 0x0031 | Motor overtemperature | Motor temperature threshold exceeded via thermal sensor or I2t thermal model. | Motor overloaded, mechanical jam, inadequate motor cooling/fan failure, incorrect thermal sensor parameter configuration. | Allow motor to cool down, check mechanical load and cooling fan, verify motor thermistor wiring. |
| 0x0032 | Heatsink overtemperature | Power section heatsink temperature exceeded upper safe limit. | Insufficient cabinet ventilation, blocked heatsink airflow, cabinet ambient temperature too high, internal fan failure. | Clean heatsink cooling fins, check cabinet ventilation and internal drive fan operation. |
| 0x0041 | Power unit overload (I2t) | Inverter power section continuous overload limit exceeded. | Continuous high torque current demand exceeding nominal current rating of the drive. | Reduce acceleration rates, check mechanical sizing and duty cycle, reduce continuous load. |
| 0x0051 | Encoder / Resolver fault | Position feedback signal error or communication timeout with feedback encoder. | Feedback cable disconnected, damaged cable shield, resolver wire swap, sensor hardware failure. | Check encoder/resolver wiring and shielding, verify connector pinout and supply voltage. |
| 0x0061 | System bus (CAN) communication error | CANopen system bus monitoring failure or telegram timeout. | Bus cable broken, missing bus termination resistor (120 Ohm), baud rate mismatch, high noise interference. | Inspect CAN cabling, verify termination resistors at both network ends, confirm baud rate settings. |
| 0x0071 | Safety module fault | Communication error or channel discrepancy in safety module / STO interface. | Safety module missing, improper safety input wiring, discrepancy time exceeded between safety channels. | Check safety circuit signals, wiring connection to safety terminal block, or replace faulty safety module. |
| 0x0081 | Memory module error | Memory module read/write failure or invalid parameter set file. | Memory card not properly inserted, corrupted data file, memory card defective. | Reinsert memory card firmly. If error persists, reformat card or insert a valid memory module. Hardware fault requires card replacement. |
Frequently Asked Questions
What software is used to program the Lenze E94ASHE0044 drive?
The drive is configured using the Lenze L-force Engineer software suite. Alternatively, basic parameter changes can be completed using the Keypad XT display module (E94AZKAE001) or a USB Diagnostic Adapter (E94AZCUS).
Can a replacement E94ASHE0044 drive be commissioned without a PC?
Yes. By physically transferring the pluggable MM500 or MM1000 memory module from the original drive into the replacement unit, all parameter sets and program data transfer automatically without connecting software.
What motor feedback encoders are supported by the E94ASHE0044?
The drive features a universal multi-encoder interface that supports Resolvers, SinCos, Hiperface, SSI, and EnDat encoder systems.
Which communication interfaces can be added to the E94ASHE0044?
In addition to its onboard CANopen bus, the drive features two option slots for modules supporting PROFINET (E94AYAER), EtherCAT (E94AYAET), PROFIBUS (E94AYAPB), and EtherNet/IP (E94AYAEI).
What steps should be taken if fault code 0x0011 appears?
Fault code 0x0011 indicates a short circuit in the motor phase connections or power section. Inspect the motor power cabling for damaged insulation and measure motor winding resistance. If cabling and motor test normal, an internal power transistor failure has occurred and the drive must be replaced or repaired.
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