Lenze EPM-H502 Command Panel 4.3-Inch HMI Operator Interface
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Product Information
The Lenze EPM-H502 is an HMI operator interface basic unit from the Command Panel family designed for local machine visualization, drive parameter setting, and sequence control. Featuring a 4.3-inch widescreen TFT LCD touch display with a 480x272 WQVGA resolution, this unit provides clear status visualization and touch-based control for industrial machinery. Built with an IP65-rated front surface and an IP20-rated rear enclosure, the panel operates on a nominal 24V DC supply across an acceptable operating range of 18V DC to 30V DC.
Communication is handled via an RJ45 10/100 Mbit/s Ethernet port, a multi-standard D-Sub 9-pin serial port supporting RS-232, RS-485, and RS-422, and a USB 2.0 host interface. Replacing an existing unit requires transferring the visualization project and configuration parameters, which are created using Lenze VisiWinNET or EASY UI engineering software. Because project files and runtime data are stored in non-volatile internal flash memory, maintenance teams can reload configuration projects directly over the Ethernet network or via standard USB flash media. ABC Industrial Parts can assist with sourcing replacement hardware and supporting parameter and project transfers when restoring machine operation.
Operational monitoring and basic diagnostics are facilitated by front status indication labeled PWR / RUN / ERR alongside an integrated on-screen system menu. Technicians can access internal diagnostic pages during startup or via touch gestures to inspect IP settings, system logs, and network status, or perform online diagnostics through VisiWinNET and EASY UI software. When internal electronic faults occur that cannot be resolved through system menus or project reloading, hardware repairs or a tested replacement unit from ABC Industrial Parts offer a rapid solution to restore line production.
Technical Specifications
| Manufacturer | Lenze |
| Part Number | EPM-H502 |
| Model / Type | OPERATOR INTERFACE BASIC UNIT LCD 4INCH |
| Component Type | HMI |
| Product Family | Command Panel |
| Display Size | 4.3 inch |
| Display Resolution | 480 x 272 pixels |
| Display Type | Widescreen TFT LCD Touchscreen |
| Supply Voltage (Nominal) | 24 V DC |
| Operating Voltage Range | 18 - 30 V DC |
| Front Panel Protection Rating | IP65 |
| Rear Panel Protection Rating | IP20 |
| Ethernet Interface | 1x RJ45 (10/100 Mbit/s) |
| Serial Interface | 1x D-Sub 9-pin (RS-232/RS-485/RS-422) |
| USB Interface | 1x USB 2.0 Host (USB-A) |
| Supported Protocols | Lenze Drive Protocol, Modbus TCP, Modbus RTU |
Programming and Configuration
System engineering and screen development for the Lenze EPM-H502 are performed using Lenze VisiWinNET or EASY UI software. These engineering tools enable project creation, drive tag mapping, and custom alarm configuration tailored for Lenze frequency inverters and servo drives.
Project files and user runtime data are stored inside non-volatile internal flash memory. Projects can be downloaded directly through the Ethernet RJ45 network interface or loaded using the USB 2.0 host port with standard USB storage media, enabling straightforward project updates and parameter backups.
Communication and System Integration
The EPM-H502 includes an RJ45 Ethernet port supporting 10/100 Mbit/s communication, alongside a multi-standard D-Sub 9-pin serial interface that supports RS-232, RS-485, and RS-422 configurations. A USB 2.0 host (USB-A) port is also available for external data storage and project transfers.
Supported network protocols include Lenze Drive Protocol for direct interaction with Lenze drive controllers, as well as Modbus TCP and Modbus RTU protocols. This permits simultaneous communication with Lenze frequency inverters, servo drives, and third-party PLCs across industrial automation networks.
Diagnostics and Status Indication
System state and operational conditions on the EPM-H502 are indicated by the PWR / RUN / ERR status indicator, covering power supply health, operating state, and system or communication errors. Online diagnostics can also be executed using connected VisiWinNET or EASY UI software tools.
Additional diagnostic details are accessible directly through the on-screen system menu. By triggering a touch gesture or specific power-up sequence, operators can open internal system menus to examine network status, active IP configurations, and system logs.
Status LED Indicators
| LED | Color/Status | Meaning |
|---|---|---|
| PWR / RUN / ERR | Power supply indication, operating status, system/communication fault status |
Replacement and Spare Part Considerations
When substituting an existing Lenze EPM-H502 unit, ensure that the physical mounting location maintains proper gasketing to preserve the IP65 front panel ingress protection rating. Check that the external power supply delivers stable 24V DC power within the allowable 18V DC to 30V DC operating window.
Spare units must be loaded with the correct project backup created in VisiWinNET or EASY UI before fully entering production service. Project recovery can be executed using a USB flash drive connected to the USB-A host port or by flashing the project file over the network connection.
Frequently Asked Questions
What software is used to program the Lenze EPM-H502 panel?
Lenze VisiWinNET or EASY UI software is used to design screen layouts, map drive tags, configure alarms, and program the EPM-H502 operator panel.
How are project files transferred to a replacement EPM-H502 unit?
Projects stored in internal non-volatile flash memory can be transferred using standard USB storage media plugged into the USB 2.0 host port or downloaded directly across an Ethernet network connection.
What interfaces and communication protocols does the EPM-H502 support?
The panel features an RJ45 Ethernet port (10/100 Mbit/s), a D-Sub 9-pin serial port (RS-232/485/422), and a USB 2.0 host port. It natively supports Lenze Drive Protocol, Modbus TCP, and Modbus RTU.
What are the electrical power requirements for the EPM-H502 operator panel?
The panel operates on a nominal 24V DC input supply with an acceptable voltage range of 18V DC to 30V DC.
What protection rating does the EPM-H502 provide for enclosure mounting?
When installed in an enclosure cutout with an appropriate gasket, the front surface provides IP65 ingress protection against dust and water, while the rear housing carries an IP20 rating.
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Data backup and recovery
Have you lost valuable parameters or data due to a malfunction while the manufacturer no longer provides support? At ABC Industrial Parts, we help you secure this data, both for common and specific products.
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:
We are not an authorised distributor of Lenze.
Product photos are for illustration purposes only and may differ from the actual product delivered.
Some of the content on this page was created with the help of AI. While we strive to provide accurate and up-to-date information, errors may occur.