Lenze E94AZPS0244 24V DC 24A Backplane Power Supply Module
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Product Information
The Lenze E94AZPS0244 is a backplane 24 V DC power supply module designed for the Lenze Servo Drives 9400 multi-axis system. Operating from a wide 3-phase AC input supply range of 320 V AC to 550 V AC, this compact unit delivers a stabilized 24 V DC output at up to 24 A continuous current, providing a total rated power output of 576 W. The module mounts directly into dedicated slots on Lenze 9400 multi-axis backplane frames, housed in an IP20 touch-safe enclosure. It supplies auxiliary control power to internal drive control circuits, feedback units, and bus communication modules across connected axis modules.
Connecting the E94AZPS0244 into a multi-axis cabinet layout relies on integrated backplane connector strips that interface directly with the 9400 system backplane bus, alongside secure screw or plug-in terminal blocks for the 3-phase mains AC supply. Because power distributes directly through the shared backplane, external point-to-point 24 V control wiring across individual axis modules is eliminated. Commissioning a replacement unit is straightforward because the module operates as a dedicated hardware device with no internal digital firmware parameters or software configurations to back up or transfer. Replacing a faulty supply requires only standard mechanical hand tools to unbolt and swap the module in the frame, allowing ABC Industrial Parts to supply ready-to-install units that quickly restore machine operation.
Front-panel LED indicators provide immediate visual feedback for operational monitoring and basic troubleshooting. The green 24V OK / Power LED lights solid when the 24 V DC output voltage remains within normal operating tolerance, while the red/yellow Fail / Overload LED indicates output overloads, short circuits, or internal power stage faults. Technicians can perform localized checks using dedicated 24 V DC multimeter test points on the front panel or review system diagnostic status logs using Lenze Engineer software. In the event of an internal power stage failure or short circuit, field repairs to internal electronics are not feasible, making module replacement or exchange through ABC Industrial Parts the most practical method for minimizing system downtime.
Technical Specifications
| Manufacturer | Lenze |
| Part number | E94AZPS0244 |
| Model / Type | Backplane 24V Power Supply Module |
| Product family | Servo Drives 9400 |
| Component type | Power Supply Module |
| Supply voltage range | 320 - 550 V AC (3-Phase) |
| Output voltage | 24 V DC |
| Output current | 24 A |
| Rated power output | 576 W |
| Enclosure rating | IP20 |
| Mounting type | Backplane system mounting |
| System interface | Backplane connector strip |
Communication and System Integration
The Lenze E94AZPS0244 integrates directly into Lenze Servo Drives 9400 multi-axis rack systems using rigid backplane connector strips. This direct interface delivers 24 V DC auxiliary control power directly across the shared system bus, eliminating extensive external wiring between adjacent drive modules and keeping cabinet layouts compact.
Mains power is routed into the module via screw and plug-in terminal blocks designed for 3-phase 320 V AC to 550 V AC operation. In addition to primary power delivery, the module communicates fault and power status across the system bus to the central 9400 drive controller, allowing central automation controllers to monitor power health in automated packaging, logistics, and textile machinery.
Diagnostics and Status Indication
The front panel of the E94AZPS0244 module features dual status LEDs that offer rapid visual diagnostic verification during routine operation or field troubleshooting. A solid green 24V OK / Power light indicates that the 24 V DC output is active and functioning within specification. If this light remains off, it indicates a loss of 3-phase input voltage or an internal hardware breakdown.
When fault conditions occur, the red/yellow Fail / Overload LED lights solid or flashes to indicate an output overload, short circuit, or internal power stage failure. In addition to visual inspection, maintenance personnel can take direct electrical readings at front-panel 24 V DC multimeter test points or analyze detailed error status messages using Lenze Engineer configuration software.
Status LED Indicators
| LED | Color/Status | Meaning |
|---|---|---|
| 24V OK / Power | Green - Solid / Off | Green: 24V DC output voltage present and within normal tolerance. Off: No input power or internal hardware fault. |
| Fail / Overload | Red/Yellow - Solid / Flashing | Output overload, short circuit, or internal power stage failure. |
Replacement and Spare Part Considerations
Replacing an E94AZPS0244 power supply module in a Lenze 9400 multi-axis drive frame is a true plug-and-play process. Because the module does not contain digital parameters, project files, or firmware settings, no software backup or parameter transfer is needed when installing a replacement unit.
Before installing a spare module, technicians should verify that the 3-phase mains supply voltage falls within the permitted 320 V AC to 550 V AC range and check that external 24 V DC distribution lines are free from short circuits. Once the mounting hardware is secured and mains terminal connections are attached, the module immediately restores auxiliary power to connected axis controllers.
Frequently Asked Questions
Does replacing the Lenze E94AZPS0244 require software programming?
No. The E94AZPS0244 functions as a pure hardware power supply module without parameter sets or digital firmware. Replacing a unit requires only physical installation and terminal connection, with no configuration or backup restore required in Lenze Engineer software.
What does an off 24V OK / Power LED indicate on the front panel?
An unlit 24V OK / Power LED indicates that 3-phase AC input power is absent or that the unit has experienced an internal hardware breakdown. Verify that the incoming 3-phase AC line voltage measures between 320 V AC and 550 V AC across the input terminals.
How does the E94AZPS0244 power supply connect to individual 9400 axis modules?
The module interfaces with adjacent axis modules through an integrated backplane connector strip. Mounting the module into a Lenze 9400 multi-axis backplane frame automatically distributes 24 V DC auxiliary control power across the internal bus without requiring individual point-to-point control wiring.
What tools can be used to diagnose a suspected fault on the E94AZPS0244?
Diagnostics can be performed using the front-panel status LEDs, taking voltage measurements at the 24 V DC multimeter test points, or reading system bus error status reports via Lenze Engineer software connected to the 9400 drive controller.
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Data backup and recovery
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Specific firmware and hardware versions
If you are working with specific hardware or firmware versions that are no longer available from the manufacturer, ABC Industrial Parts is your partner. When making your enquiry, clearly state which versions you need, we will then look at the possibilities of supplying those versions, so that your installations continue to function optimally.
Disclaimer:
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