Lenze EPM-T211.1A MODULE DI 16XDC24V Digital Input Module
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Product Information
The Lenze EPM-T211.1A (Model: MODULE DI 16XDC24V) is a high-density digital input module designed for the modular Lenze I/O System 1000 platform. Housed in a compact IP20 enclosure, this unit reads up to 16 discrete 24 V DC signals from proximity sensors, position limit switches, and safety interlocks across automated machinery. The module operates with a nominal input voltage of 24 V DC and accommodates a voltage range between 18 V DC and 30 V DC, drawing a typical input current of 2.5 mA per channel. Optocoupler galvanic isolation separates internal logic from field wiring, protecting backplane electronics against transient voltage surges and electrical interference in industrial control environments.
Physical connection to the system bus is established through integrated backplane contacts that interface directly with Lenze I/O System 1000 bus couplers and terminal base blocks. The module supports hot-swappable hardware replacement on push-in terminal bases, enabling technicians to exchange an electronic unit without unwiring field terminals. Software integration and configuration are managed using Lenze EASY Starter or CODESYS-based Lenze PLC Designer software. During commissioning or spare part replacement, parameters such as input filter times are held at the controller or coupler level and automatically pushed to the new module upon startup. Maintenance teams needing assistance with replacement stock or parameter verification can rely on support from ABC Industrial Parts.
Local visual diagnostics are provided directly on the front panel by 16 individual green channel LEDs, which indicate whether each digital input signal is active (HIGH) or inactive (LOW). A dedicated dual-color DIAG / ERR LED signals overall module health and communication status, showing solid green during normal operation, or solid/flashing red in the event of an internal hardware fault, module failure, or loss of system bus communication. System-level diagnostics can also be evaluated through the Lenze EASY Starter diagnostic monitor, fieldbus master PLC buffers, and system bus error flags. When internal hardware components fail, board-level repairs or acquiring a tested exchange unit through ABC Industrial Parts provides a rapid path to restoring machine operation.
Technical Specifications
| Manufacturer | Lenze |
| Part Number | EPM-T211.1A |
| Model / Type | MODULE DI 16XDC24V |
| Product Family | I/O System 1000 |
| Component Type | Digital Input Module |
| Number of Digital Inputs | 16 |
| Nominal Input Voltage | 24 V DC |
| Input Voltage Range | 18 to 30 V DC |
| Input Current per Channel | 2.5 mA |
| Galvanic Isolation | Yes (Optocoupler) |
| IP Rating | IP20 |
| Backplane Interface | Integrated Base Module Backplane Contacts |
Programming and Configuration
Configuration for the Lenze EPM-T211.1A digital input module is integrated into the Lenze engineering environment using Lenze EASY Starter or CODESYS-based Lenze PLC Designer software. Channel parameters, including digital input filter times used to debounce switch and sensor signals, are defined within the central software project.
Because parameters are stored within the system bus coupler or central PLC memory, replacing a module does not require direct manual reprogramming of the physical module. Upon system boot or hot-swap insertion, the bus coupler automatically downloads the required configuration to the EPM-T211.1A, ensuring seamless parameter alignment across replacement units.
Communication and System Integration
The Lenze EPM-T211.1A connects to the local I/O rack via integrated backplane contacts on the Lenze I/O System 1000 base module. These backplane contacts route digital input status signals directly to the attached Lenze I/O System 1000 bus coupler or integrated controller.
The bus coupler then translates these discrete signals onto the main fieldbus or Ethernet network for high-level control. Optocoupler galvanic isolation isolates the 24 V DC field signals from the internal backplane logic, preventing noise on field wiring from interrupting centralized controller communications.
Diagnostics and Status Indication
Real-time operational monitoring is supported locally through status LEDs and remotely via controller software. The Lenze EASY Starter diagnostic monitor, fieldbus master diagnostic buffers, and system bus error flags provide comprehensive oversight of channel states and bus integrity.
Front-panel status LEDs give immediate visual feedback in the field. The 16 channel LEDs show individual input states, while the DIAG / ERR indicator communicates overall module status and bus connectivity.
Status LED Indicators
| LED | Color/Status | Meaning |
|---|---|---|
| 1 - 16 | Green - Solid / Off | Green ON: Input signal active (HIGH level). Green OFF: Input signal inactive (LOW level). |
| DIAG / ERR | Red / Green - Solid Red / Flashing Red / Solid Green | Solid/Flashing Red: Internal hardware fault, module failure, or loss of system bus communication. Solid Green: Normal operating state. |
Replacement and Spare Part Considerations
When replacing a Lenze EPM-T211.1A module, verify that the replacement part matches the exact part number EPM-T211.1A and model designation MODULE DI 16XDC24V. The unit inserts directly into the permanent Lenze I/O System 1000 terminal base block without removing connected field wiring.
Thanks to hot-swap support, the module can be removed and inserted while the base remains wired. Once connected, the bus master automatically transfers channel configuration parameters, eliminating the need for offline field programming before installation.
Frequently Asked Questions
What software is used to configure the Lenze EPM-T211.1A module?
Configuration is managed using Lenze EASY Starter or CODESYS-based Lenze PLC Designer software.
Can the Lenze EPM-T211.1A be replaced without disconnecting field wiring?
Yes, the module supports hot-swappable replacement on permanent Lenze I/O System 1000 terminal base blocks without unwiring terminal connectors.
What do the DIAG / ERR LED states indicate?
A solid green LED indicates normal operation. Solid or flashing red indicates an internal hardware fault, module failure, or loss of system bus communication.
What input voltage range does the EPM-T211.1A support?
The module has a nominal input voltage of 24 V DC and operates reliably within a range of 18 V DC to 30 V DC.
Does the EPM-T211.1A require parameter re-download after replacement?
Configuration parameters such as input filter times are stored centrally by the system bus coupler or controller and automatically downloaded to the replacement module upon startup.
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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:
We are not an authorised distributor of Lenze.
Product photos are for illustration purposes only and may differ from the actual product delivered.
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