Lenze E94AZHX0051 Motor Brake Control Module 24V DC 2.5A
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Product Information
The Lenze E94AZHX0051 is a dedicated motor brake control module designed for direct option-slot installation in Lenze 9400 Series servo drives, including HighLine and Stateline variants. Operating on a 24 V DC supply voltage, this compact internal accessory provides a controlled 24 V DC output at up to 2.5 A continuous current to manage spring-applied motor holding brakes. By handling brake actuation directly within the host inverter chassis using a screw or plug-in terminal block, the module eliminates the need for external relays while enabling precise holding of vertical or inclined loads during drive disable states.
Integrating a replacement E94AZHX0051 module into an existing installation is straightforward due to the architecture of the host drive system. Operational parameters, such as programmable brake opening and closing delay times, are configured using Lenze Engineer or Lenze EASY Navigator software and are stored within the non-volatile memory of the host Lenze 9400 drive. Because configuration data resides on the drive rather than the option module itself, replacing a failed module generally requires physical installation and reattaching the terminal block connections without needing software reprogramming. Technical support from ABC Industrial Parts can assist maintenance technicians in verifying host compatibility and parameter alignment during replacement.
System monitoring and rapid diagnostics are provided through both localized indicators and host drive integration. The module features a dedicated Brake Status LED that provides visual indication of the brake output state as well as overload or short-circuit conditions. In addition, the host 9400 drive continuously monitors the brake loop, displaying status via the keypad or Lenze Engineer software diagnostic panel and raising specific fault codes such as 0x00220001 for open circuits or 0x00220002 for short circuits. When an internal circuit failure occurs on the board, replacing the unit or sourcing a tested spare through ABC Industrial Parts ensures a swift return to production.
Technical Specifications
| Manufacturer | Lenze |
| Part Number | E94AZHX0051 |
| Model / Type | Motor Brake Control Module 24V DC 2.5A |
| Component Type | Motor Brake Control Module |
| Product Family | Servo Drives 9400 |
| Supply Voltage | 24 V DC |
| Output Voltage | 24 V DC |
| Maximum Output Current | 2.5 A |
| Brake Connection Type | Screw/plug-in terminal block |
| Mounting Type | Internal Servo Drive 9400 Option Slot |
Programming and Configuration
Parameterization for the Lenze E94AZHX0051 is managed through the engineering environment of the host drive using Lenze Engineer or Lenze EASY Navigator software. Through these software tools, technicians can program precise opening and closing release delays to coordinate brake actuation with the motor power stage in dynamic servo axes.
All timing thresholds and operational parameters set for the module are saved directly to the non-volatile memory module of the host Lenze 9400 drive. This centralized memory retention ensures that parameter settings remain intact during maintenance, allowing hardware modules to be replaced without re-entering configuration data in software.
Communication and System Integration
The E94AZHX0051 mounts directly into an internal option slot of Lenze 9400 HighLine and Stateline servo drives. Internal system bus connections allow the host drive to coordinate brake control actions tightly with drive enable and disable sequences, ensuring safe holding on vertical or inclined loads.
External field connections to the motor brake coil are established using a plug-in or screw terminal block. This physical interface simplifies cabinet wiring and allows quick disconnection during maintenance or diagnostic testing.
Diagnostics and Status Indication
Diagnostic feedback for the E94AZHX0051 is accessible via multiple channels, including a dedicated front Brake Status LED, the 9400 drive keypad display, and the diagnostic panel in Lenze Engineer software. The host servo drive continuously evaluates the status of the output circuit to detect loop failures or abnormal current conditions.
The integrated Brake Status LED gives real-time visual indication of output activity, showing whether the brake control is active or in a fault state. Further details regarding fault events are communicated directly to the drive fault buffer for detailed analysis.
Status LED Indicators
| LED | Color/Status | Meaning |
|---|---|---|
| Brake Status LED | Active / Fault State | Indicates active status of brake control output (e.g. brake released or applied) and fault condition if short-circuit/overload occurs. |
Replacement and Spare Part Considerations
Replacing a defective E94AZHX0051 involves powering down the servo drive, removing the terminal connection block, and swapping the module within the host drive option slot. Because brake operating parameters are retained in the non-volatile memory of the host Lenze 9400 drive, software reprogramming is generally not required during a direct module exchange.
Before restoring power to a newly installed unit, technicians should verify that the motor brake cable insulation and coil resistance are within specification. If an output short-circuit fault persists after disconnecting the load, replacing the E94AZHX0051 module is necessary to restore normal operation.
Error Codes & Fault Codes
The following error codes may be displayed during operation or diagnostics:
| Code | Name | Description | Possible Cause | Recommended Action |
|---|---|---|---|---|
| 0x00220001 | Brake fault / Brake cable open circuit | Host 9400 drive detects interruption or open circuit in the brake control loop. | Broken cable to motor brake coil, coil disconnected, or internal module fault. | Check wiring to motor brake, verify brake coil resistance, replace E94AZHX0051 module if output circuit is damaged. |
| 0x00220002 | Brake short circuit | Short circuit detected on 24 V DC output of brake control module. | Short circuit in motor brake cable or damaged brake coil. | Check brake cable insulation and brake coil for short circuit. Replace damaged module if short circuit fault persists after disconnecting motor load. |
Frequently Asked Questions
What is the main function of the Lenze E94AZHX0051?
The Lenze E94AZHX0051 is an internal motor brake control module designed to provide a regulated 24 V DC output at up to 2.5 A for controlling spring-applied motor holding brakes directly from Lenze 9400 series servo drives.
Which Lenze drives support the E94AZHX0051 module?
The E94AZHX0051 module is compatible with Lenze 9400 HighLine and Lenze 9400 Stateline servo drives.
Is software reprogramming required when replacing the E94AZHX0051?
No, configuration settings such as brake release delays reside in the non-volatile memory of the host Lenze 9400 drive, allowing hardware replacement without transferring or re-entering parameters.
Which software tools are used to configure module parameters?
Module timing and operational thresholds are configured using Lenze Engineer software or Lenze EASY Navigator.
What does fault code 0x00220001 indicate?
Fault code 0x00220001 indicates an open circuit in the brake control loop, caused by a broken brake cable, a disconnected brake coil, or an internal module output fault.
How does the system react to a short circuit on the brake output?
If a short circuit occurs on the 24 V DC output, the host drive triggers fault code 0x00220002 and the Brake Status LED indicates a fault state to prevent hardware damage.
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