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Lenze E94AMHE0094 9400 HighLine Multi Servo Drive (Correction: Not standalone encoder module)

1. Product Overview

Manufacturer: Lenze (Germany)

Model: E94AMHE0094

Series: 9400 HighLine modular multi-axis servo drive system

This unit is a complete servo power amplifier instead of an independent encoder module. The letter "E" in the model code indicates the drive comes with built-in hardware circuits to support incremental encoder feedback, and it can be equipped with optional external encoder expansion boards for multi-feedback signal processing. It is used to drive synchronous servo motors and asynchronous main motors, delivering high-precision speed, torque and position closed-loop motion control for automated production equipment.

Model code breakdown

E94 stands for Lenze 9400 multi-drive platform; AM represents HighLine regenerative axis module; H denotes standard motion control performance with MotionView onboard; E means the drive integrates native incremental encoder feedback interface; 0094 refers to the current rating and hardware version, with a rated output current of 9.3A and matched motor power of 4kW.

2. Core Electrical Performance Parameters

DC bus supply voltage is 565 VDC, matched with 400V three-phase AC power supply rectifier power unit. The rated three-phase output current is 9.3A, with 150% overload capacity sustainable for 60 seconds to handle peak acceleration loads. The internal switching frequency is fixed at 8kHz, which balances output waveform smoothness and heat generation.

The drive supports multiple motor feedback signals without extra hardware upgrades. It directly reads signals from incremental encoders, resolvers and single-turn/multi-turn absolute encoders via the onboard feedback port. For dual-feedback applications such as spindle external position measurement, users can plug in optional E94AY encoder expansion modules to add secondary encoder signal acquisition channels.

Built-in integrated braking chopper handles regenerative energy from motor deceleration; STO safe torque off safety function complies with EN 61800-5-2 standard for machine safety interlock.

Onboard 24VDC auxiliary power input consumes 0.9A, and it provides isolated 24VDC power supply for encoders and external sensors.

3. Communication & Encoder Feedback Functions

Standard communication interfaces include CANopen, PROFIBUS, and EtherCAT depending on installed option cards, enabling real-time motion command exchange with PLC and upper motion controllers. The front service port supports laptop connection for parameter configuration, program upload/download and fault waveform recording.

The native encoder interface processes A/B/Z phase differential signals, EnDat and Hiperface digital encoder protocols. It conducts real-time position closed-loop calculation by collecting rotor position feedback, eliminates positioning deviation during high-speed operation, and outputs fault alarms for encoder wire breakage, short circuit and signal loss.

Multi-channel digital input and output terminals are reserved for limit switches, home position sensors, relay output and external fault reset signals.

4. Mechanical & Environmental Specifications

Installation method is vertical DIN rail mounting inside control cabinets, with forced air cooling via built-in fan. Protection class is IP20, only suitable for indoor cabinet installation.

Operating ambient temperature ranges from 0°C to 40°C; storage temperature ranges from -40°C to 85°C, working under 5% to 95% non-condensing humidity. It passes CE, UL and cUL industrial safety certifications.

Overall weight of the single axis drive module is approximately 5.1kg, adopting modular plug-in design that allows hot swapping of axis modules on the shared DC bus rack without shutting down the entire power unit.

5. Matching Supporting Accessories

External encoder expansion boards including E94AY series feedback modules for dual encoder signal collection; shared DC bus power supply unit for multi-axis parallel connection; EMC power line filters and shielded encoder cables; operation panel for local parameter viewing and manual jog control; programming software Lenze Engineer for motion logic programming and encoder parameter calibration.

6. Core Working Functions

Receive motion position, speed and torque instructions from upper control systems via fieldbus, and output PWM power waveforms to drive servo motors.

Realize fully closed-loop control by processing encoder position feedback signals, automatically correcting position errors to guarantee high-precision positioning and stable low-speed operation.

Execute electronic gear, cam curve, flying shear and other complex motion algorithms integrated inside the drive.

Continuously monitor encoder circuit status, motor current, bus voltage and internal temperature, and trigger corresponding alarm codes for quick fault troubleshooting.

Support regenerative energy feedback to the shared DC bus for energy reuse among multiple axes to reduce power consumption.

7. Key Advantages

Integrated native encoder feedback circuit eliminates the need for separate encoder adapter modules in basic single-feedback applications, saving cabinet space.

High overload capacity meets frequent start-stop and rapid reciprocating motion demands of packaging, printing and machine tool equipment.

Modular multi-drive architecture allows flexible expansion of multiple servo axes on one shared power supply unit.

Rich compatible encoder protocols fit most mainstream servo motors on the market, with convenient parameter matching via software.

Built-in safety STO function simplifies machine safety circuit design and meets international machinery safety standards.

Wide operating temperature and strong anti-electromagnetic interference performance adapt to harsh workshop environments with inverters and high-power contactors.

8. Typical Application Scenarios

High-speed packaging production lines, printing web conveying and cutting equipment

CNC machine tool feed axes, spindle servo control systems

Automotive assembly automation gantry handling and positioning equipment

Plastic injection molding, extrusion and blow molding servo motion control

Textile machinery winding, unwinding and tension closed-loop control

Logistics palletizing robots and automated warehouse shuttle positioning axes