Description
Product Introduction & Engineering Value
The Lenze EPM-H310 is a compact text-display HMI designed for operator access to Lenze controllers, including 8200 vector and 9300/9400 drive systems. Lenze documentation identifies it as an operating unit communicating with compatible controllers through the CAN system bus.
The hardware is particularly relevant when maintaining older Lenze installations where the existing H310 interface is still tied to the machine’s HMI project. Replacement is not simply a matter of matching the display and keypad; the HMI project, CAN configuration, and HMI Designer version also need attention.
Technical Specifications
| Parameter | EPM-H310 Specification |
|---|---|
| Manufacturer | Lenze |
| Order Reference | EPM-H310 |
| HMI Type | Text display with input keys |
| Display | LED-backlit LC |
| Display Format | 2 × 20 characters |
| Character Matrix | 5 × 7 pixels |
| Character Size | Approx. 3.2 × 5.5 mm |
| User Memory | 48 kB application program |
| DC Supply | 24 VDC nominal |
| Permitted Supply Range | 18–32 VDC |
| Power Consumption | 5 W at 24 VDC |
| Serial Interface | RS-232 / ASP8 |
| System Bus | CAN |
| Front Protection | IP65 |
| Operating Temperature | 0 to +50 °C |
| Weight | Approx. 0.5 kg |
These specifications are documented in Lenze product literature.
The H310 uses CANopen-related communication, with documentation identifying CAN according to DIN ISO 11898 and support for master or slave operation.
Field Application & the “Trench” Experience
A common HMI replacement problem appears after a machine has been running for years: the operator panel fails, but the PLC or drive system itself remains healthy. Replacing the EPM-H310 can restore the operator interface without replacing the underlying Lenze control hardware.
The catch is configuration. Lenze documentation identifies the H310 as an interface for accessing controller codes, with projects created using HMI Designer.
Typical applications include:
- Lenze 8200 vector drive operator interfaces
- 9300/9400 servo-drive machine control panels
- Legacy CAN-based Lenze machine HMIs
- Packaging and material-handling equipment requiring parameter access
EPM-H310
EPM-H310
EPM-H310
Transparency SOP: QA & Testing
For New Surplus or Refurbished EPM-H310 inventory:
1. Hardware identification
Verify the front label, EPM-H310 order reference, hardware/software information, and serial number.
2. Physical inspection
Inspect the LCD, keypad, enclosure, mounting points, terminal strips, CAN connector, and rear adjustment components. Check for cracked housing, damaged keys, corrosion, and display defects.
3. Power test
Apply the specified DC supply within the documented 18–32 VDC range and verify normal display initialization.
4. Communication test
Where the appropriate Lenze test environment is available, verify communication over the CAN system bus and confirm that controller data can be accessed.
5. HMI project test
Load or verify a compatible HMI project and check display pages, keys, variables, alarms, and parameter access.
The Veteran’s Tech Trap Guide
⚠️ Trap #1 — CAN baud-rate compatibility.
Lenze documented a historical H310/HMI Designer issue involving 20 kbit/s and 50 kbit/s CAN baud rates. The issue was addressed in HMI Designer V1.8; older software versions can therefore create misleading communication symptoms.
⚠️ Trap #2 — Assuming the HMI is configuration-free.
The EPM-H310 uses an HMI project. A replacement panel may require the correct project to reproduce the machine’s operator interface. Lenze specifically documents HMI Designer as the development environment for H310 projects.
⚠️ Trap #3 — Ignoring the timer limitation.
Lenze documents that the H310 supports a maximum of 20 timers, compared with 32 on certain other keypads. Converting a project from another keypad can therefore require project revision.
PRO TIP: Before purchasing a replacement H310, record the existing HMI Designer project version and make a backup of the machine’s HMI project. The hardware is only half of the replacement equation.
Dynamic FAQ
What is the Lenze EPM-H310?
The is a Lenze text-display HMI with input keys. It provides operator access to compatible Lenze controller and drive parameters and communicates through the CAN system bus.
What is the EPM-H310 supply voltage?
The nominal supply is 24 VDC, with a documented operating range of 18–32 VDC. Power consumption is approximately 5 W at 24 VDC.
What display does the EPM-H310 use?
It uses an LED-backlit LC text display with 2 × 20 characters.
Can EPM-H310 communicate with Lenze drives?
Yes. The unit is designed to access codes of compatible Lenze controllers and drives and communicates through the CAN system bus.
Is New Surplus EPM-H310 suitable as a replacement?
Yes, provided the exact hardware is confirmed and the HMI project and communication configuration are compatible. New Surplus condition should still be verified through physical inspection and functional testing.
What warranty should I request?
For New Surplus or refurbished EPM-H310 inventory, request a written warranty covering the LCD, keypad, power-up operation, and communication functionality. Also ask whether the actual unit supplied was function-tested or merely inspected.
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