Lenze ECSEM004C4B ECS Servo System Axis Module
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Product Information
The Lenze ECSEM004C4B is a compact Generation C servo drive axis module belonging to the Lenze ECS Servo System family. Configured as an ECS-Motion variant, this unit combines power electronics with onboard motion control processing to execute positioning, velocity control, and synchronized motion directly at the drive level. Operating from a nominal 560 V DC link supply provided by central power supply units such as the ECSSP, ECSSI, or ECSPS, the module delivers a continuous rated output current of 4.0 A and a peak output current of 8.0 A for up to 5 seconds. Designed for a rated output power of 1.5 kW at 400 V AC output, it provides compact energy management in multi-axis automation architectures.
Interfacing with external equipment relies on an integrated CANopen system bus alongside a universal feedback interface capable of supporting resolvers, incremental encoders, SinCos signals, and Hiperface absolute encoders. An integrated fieldbus option slot accepts add-on communication modules, including the EMF2133IB PROFIBUS-DP and EMF2192IB EtherCAT interfaces. Commissioning a replacement unit requires transferring stored parameter sets from non-volatile EEPROM memory using Lenze Engineer or Global Drive Control software, or through the Keypad XT operating module. A spare ECSEM004C4B module cannot simply be installed and powered up without prior setup; hardware DIP switches for bus addressing and baud rate must match the original node configuration before placing the drive into operation, with ABC Industrial Parts available to assist with component parameter handling.
Operational monitoring and troubleshooting are supported by front-panel status LEDs indicating drive execution, error conditions, and CAN network status. When unexpected operation occurs, diagnostic codes such as OC1 short-circuit alarms, OU DC bus overvoltage warnings, or Sd2 resolver feedback faults identify the root cause across motor cabling, braking chopper circuits, or feedback lines. Basic field checks should verify the 560 V DC link supply range between 420 V DC and 775 V DC, inspect cable shielding, and confirm proper DIP switch addressing. Internal power stage faults or unrecoverable EEPROM errors indicate hardware failures that cannot be serviced in the field, making unit replacement or repair through ABC Industrial Parts the recommended solution to minimize machine downtime.
Technical Specifications
| Manufacturer | Lenze |
| Part Number | ECSEM004C4B |
| Model / Type | ECSEM004C4B |
| Component Type | Servo Drive Axis Module |
| Product Family | ECS Servo System |
| Series / Variant | ECS-Motion (Generation C) |
| Rated Output Current | 4.0 A |
| Peak Output Current | 8.0 A (up to 5 s) |
| Rated Power Output | 1.5 kW |
| Nominal DC Bus Supply Voltage | 560 V DC |
| DC Bus Voltage Range | 420 V DC to 775 V DC |
| Output Voltage | 400 V AC |
| Digital Inputs | 4 |
| Digital Outputs | 2 |
| Maximum Output Frequency | 480 Hz |
| Switching Frequency | 8 kHz (configurable up to 16 kHz) |
| Integrated System Bus | CAN / CANopen |
| Feedback Interfaces | Resolver, SinCos, Incremental, Hiperface |
Programming and Configuration
Programming and parameter setup for the Lenze ECSEM004C4B rely on the Lenze Engineer software suite or Global Drive Control software. These engineering tools allow maintenance personnel and system integrators to configure internal ECS-Motion positioning profiles, speed control parameters, and electronic gearing functions. Parameters are stored in the module's non-volatile EEPROM memory, retaining axis settings during power cycles.
Direct field parameterization without a PC can be performed using the Keypad XT operating module, which plugs into the front interface of the axis drive. When replacing an existing module, parameter sets must be extracted from the original drive or uploaded from software backups and written to the replacement unit. Proper matching of software configurations and hardware DIP switch address settings ensures that the replacement drive assumes its correct axis identity on the control network.
Communication and System Integration
System integration for the ECSEM004C4B is anchored by its onboard CAN system bus utilizing the CANopen protocol. This integrated bus handles real-time coordination, control commands, and diagnostic object exchanges between individual axis modules and central controllers across multi-axis system lineups. Dedicated DIP switches on the module establish the node address and network baud rate.
For higher-level fieldbus connectivity, the axis module features an integrated expansion slot designed for optional fieldbus communication modules. Pluggable option boards such as the EMF2133IB PROFIBUS-DP module and the EMF2192IB EtherCAT module enable seamless integration into broader machine networks, allowing central PLCs to supervise drive states while leaving local motion execution to the onboard ECS-Motion controller.
Diagnostics and Status Indication
The front panel of the Lenze ECSEM004C4B provides direct status indication via system LEDs, allowing quick visual diagnosis of drive operational states and CAN bus errors. Detailed status codes and diagnostic history can be queried via the Keypad XT operating display or through real-time monitoring windows within Global Drive Control software.
Status LED Indicators
| LED | Color/Status | Meaning |
|---|---|---|
| DRIVE RUN / OK | Documented on front panel | Normal drive operating status |
| DRIVE ERROR / FAULT | Documented on front panel | Drive error or fault active |
| CAN RUN | Documented on front panel | CANopen network operational status |
| CAN ERR | Documented on front panel | CAN bus communication error |
Replacement and Spare Part Considerations
When substituting an existing Lenze ECSEM004C4B unit, maintenance technicians must ensure that the replacement drive shares the same hardware revision generation (Generation C) and firmware compatibility. Because this module is part of a common DC bus system, powering the unit requires an operational central power supply module, such as the ECSSP, ECSSI, or ECSPS, delivering an operating voltage between 420 V DC and 775 V DC (nominal 560 V DC).
Before putting a replacement drive into service, parameter backup files must be restored to the non-volatile EEPROM memory using Lenze Engineer, Global Drive Control, or the Keypad XT module. In addition, the hardware DIP switches located on the front panel must be aligned with the original unit's settings to ensure correct node addressing and network baud rate selection on the CAN bus. Interchanging modules without restoring parameter files can lead to axis synchronization errors or incorrect motor feedback evaluation.
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 | Short circuit on motor output terminals or excessive instantaneous peak current detected. | Short circuit in motor cable, short circuit in motor windings, drive rated current exceeded severely. | Check motor cable for damaged insulation, measure motor winding resistance, check motor cable length. If code persists with motor disconnected, internal power stage failure is present (return unit for repair). |
| OC2 | Earth Fault | Ground fault / earth fault detected on output phase. | Ground fault in motor lead, phase leakage to earth/housing in motor. | Inspect motor cables and junction box for ground connection faults; perform insulation test on motor and wiring. |
| OC5 | I2t Motor Overload | Calculated motor thermal load limit exceeded. | Continuous current output exceeded motor continuous rating, mechanical overload/jamming on drive axis. | Check mechanical axis for binding, review motor sizing and duty cycle, allow motor to cool. |
| OU | DC Bus Overvoltage | DC link bus voltage exceeded upper limit threshold (775 V DC). | Regenerative energy from deceleration exceeds brake chopper capacity or power supply recovery capacity. | Check braking resistor circuit and braking chopper on power supply module ECSSP; extend deceleration ramp times. |
| LU | DC Bus Undervoltage | DC link bus voltage fell below lower limit threshold. | Main supply voltage drop, power supply module failure, mains phase failure. | Check power supply module ECSSP output voltage, verify AC line supply voltage and fuses. |
| OH | Heatsink Overtemperature | Axis module internal heatsink temperature exceeded maximum safety threshold. | Inadequate cabinet cooling, excessive ambient temperature, cooling fan failure, heatsink clogged with dust. | Clean heatsink, check panel ventilation fans, ensure clear air flow space above and below axis module. |
| OH4 | Motor Overtemperature | Motor temperature sensor (PTC/KTY) triggered overtemperature alarm. | Motor thermal overload, insufficient motor cooling, defective temperature sensor wiring. | Check motor cooling fan, measure motor sensor resistance at terminal board X5, verify motor current loading. |
| Sd2 | Resolver Open Circuit / Fault | Loss of resolver feedback signal on connector X6. | Broken encoder/resolver cable, loose Sub-D connector X6, damaged resolver sensor. | Check resolver feedback cable connection and shielding, verify resolver wiring continuity. |
| CE0 | CAN Bus Communication Error | Communication fault on integrated CAN system bus. | Bus line interruption, incorrect baud rate, missing termination resistor, bad DIP switch setting. | Verify CAN cabling, baud rate settings across all nodes, and presence of 120 ohm terminal resistors at both bus ends. |
| EEr | EEPROM Memory Fault | Internal parameter memory read/write error. | Corrupted non-volatile EEPROM memory data, internal hardware failure. | Perform factory default reset parameter reload; if fault persists, unit has internal board failure and requires repair/replacement. |
Frequently Asked Questions
What is the main function of the Lenze ECSEM004C4B servo drive module?
The Lenze ECSEM004C4B is an ECS-Motion axis module designed for multi-axis servo applications running on a common 560 V DC bus. It delivers a continuous output current of 4.0 A and 1.5 kW rated motor power with onboard motion control intelligence.
What software tools are used to configure or back up parameters on the ECSEM004C4B?
Parameters can be configured or backed up using Lenze Engineer software or Global Drive Control (GDC). Parameters can also be modified directly using the pluggable Keypad XT operating module.
Is the ECSEM004C4B a direct plug-and-play replacement?
No. Installing a replacement ECSEM004C4B requires loading the original axis parameter set into its EEPROM memory and configuring the front-panel DIP switches to match the node address and network baud rate of the replaced unit.
What motor feedback types can be connected to the ECSEM004C4B?
The module features a multi-encoder interface supporting resolvers via connector X6, as well as SinCos, incremental, and Hiperface absolute encoders.
How can the ECSEM004C4B integrate with PROFIBUS or EtherCAT networks?
In addition to its built-in CANopen system bus, the drive features a fieldbus expansion slot that accepts optional pluggable modules, such as the EMF2133IB PROFIBUS-DP or EMF2192IB EtherCAT modules.
What does fault code EEr indicate on the ECSEM004C4B?
Fault code EEr indicates an internal EEPROM read or write memory failure. If reloading factory parameters does not resolve the alarm, an internal hardware failure has occurred requiring unit repair or replacement.
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