Lenze 13349826 EPM-S302.2A Safety Module
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Product Information
The Lenze 13349826 EPM-S302.2A is a high-performance functional safety option module designed for integration with Lenze 8400 series inverter drives. Operating on a nominal 24 V DC auxiliary supply with an acceptable range from 19.2 V to 28.8 V DC, this modular plug-in expansion board connects directly into the dedicated safety slot of Lenze 8400 StateLine, HighLine, and TopLine variable frequency drives. By processing safe motion feedback internally, the unit enables safety compliance up to SIL 3 according to IEC 61508 / IEC 62061 and Performance Level e (Category 4) according to EN ISO 13849-1. It delivers integrated safe motion capabilities including Safe Torque Off (STO), Safe Stop 1 (SS1), Safe Stop 2 (SS2), Safe Operating Stop (SOS), Safely-Limited Speed (SLS), Safe Speed Range (SSR), Safe Direction (SDI), and Safely-Limited Increment (SLI) directly within the drive hardware.
Physical integration is managed via dual-channel digital safety inputs and dedicated status output terminals, eliminating the need for external safety relay circuits in packaging, automotive assembly, material handling, and machine tool safety applications. Commissioning a replacement EPM-S302.2A module requires transferring the password-protected safety parameter set and running a CRC checksum validation to align the option card with the host drive configuration. Engineering and configuration tasks are performed using Lenze Engineer software or EASY Starter tools, which facilitate parameter uploads, checksum verification, and the generation of functional safety validation reports. When restoring a machine after a safety module replacement, ABC Industrial Parts can support maintenance teams with replacement modules and parameter alignment guidance to restore production safely.
Diagnostic information is provided on the front interface through multi-color LED indicators, including PWR / READY, FAIL / ERR, and SAFE, which signal power status, safe operational states, or active system errors. Diagnostic data can also be evaluated using the drive keypad system error history buffer or through software-based safety checksum status checks. Internal hardware faults or checksum mismatches require cycling the 24 V DC supply; if the error persists, internal microcontroller or component failure is indicated and board-level repairs cannot be performed in the field. In these scenarios, replacing the unit with a tested spare module or utilizing repair options through ABC Industrial Parts ensures complete functional safety integrity is maintained.
Technical Specifications
| Manufacturer | Lenze |
| Part Number | 13349826 |
| Model/Type | EPM-S302.2A |
| Component Type | Safety Module |
| Product Family | Inverter Drives 8400 |
| Drive Compatibility | Lenze 8400 StateLine, HighLine, TopLine |
| Safety Integrity Level | SIL 3 |
| Performance Level | PL e |
| Safety Category | Cat 4 |
| Nominal Supply Voltage | 24 V DC |
| Supply Voltage Range | 19.2 V DC to 28.8 V DC |
| Safety I/O | Dual-channel safe inputs and status feedback outputs |
| Parameter Storage | Onboard non-volatile EEPROM with CRC validation |
Programming and Configuration
The EPM-S302.2A safety module utilizes onboard non-volatile EEPROM memory to store system safety parameters, password credentials, and validation checksums. Software setup and safety administration are performed using Lenze Engineer software or Lenze EASY Starter tools. These engineering environments allow technicians to configure dual-channel monitoring parameters, define discrepancy times, set motion safety thresholds, and execute mandatory checksum validation routines.
During initial setup or unit replacement, safety parameter sets are loaded directly into the non-volatile memory and locked with password protection to prevent unauthorized modification or tampering. Parameter integrity is continuously verified through internal CRC validation routines. Once configuration is complete, engineering software generates mandatory acceptance reports required for functional safety compliance documentation.
Communication and System Integration
Designed as a direct plug-in option board for the Lenze 8400 drive family, the EPM-S302.2A inserts into the dedicated safety slot on 8400 StateLine, HighLine, and TopLine inverter drives. This pluggable hardware connection links drive control directly with functional safety monitoring without requiring external safety relay modules.
The module interfaces with external safety devices through dual-channel digital safety inputs and integrated status output terminals. The dual-channel architecture maintains signal redundancy for safety-critical circuits, supporting certified safe motion functions including Safe Torque Off (STO), Safely-Limited Speed (SLS), Safe Stop 1 (SS1), Safe Stop 2 (SS2), Safe Operating Stop (SOS), Safe Speed Range (SSR), Safe Direction (SDI), and Safely-Limited Increment (SLI).
Diagnostics and Status Indication
The EPM-S302.2A provides diagnostic status monitoring through front panel multi-color LED indicators, drive keypad error history logs, and software diagnostics. Fault codes are captured in the host drive system error history buffer, while Lenze Engineer software provides visibility into safety checksum validation status and live operational conditions.
Status LED Indicators
| LED | Color/Status | Meaning |
|---|---|---|
| PWR / READY | Green - Solid | Operating voltage present and module initialized properly. |
| FAIL / ERR | Red - Solid / Flashing | Internal hardware fault, checksum mismatch, or safety function trip condition. Indicates potential hardware module failure requiring service if reset fails. |
| SAFE | Yellow / Green - Solid / Flashing | Safety function active or safe state reached. |
Replacement and Spare Part Considerations
When replacing an existing EPM-S302.2A safety module, ensure the replacement unit matches the precise model number and configuration specified for the host Lenze 8400 inverter drive. Inserting an unconfigured module or mismatched hardware variant will trigger fault C01830 and prevent drive startup until configuration alignment is performed.
A replacement spare module cannot be operated as a simple plug-and-play device without parameter setup. Maintenance personnel must reload the password-protected safety parameter set into the module's non-volatile EEPROM using Lenze Engineer or EASY Starter tools. Following parameter transfer, verify the CRC checksum and execute mandatory functional safety acceptance tests to confirm dual-channel safety inputs and motion functions operate correctly prior to restoring production.
Error Codes & Fault Codes
The following error codes may be displayed during operation or diagnostics:
| Code | Name | Description | Possible Cause | Recommended Action |
|---|---|---|---|---|
| C01830 | Safety module mismatch | The connected safety option module does not match the configured safety module type in the inverter parameter set. | Wrong module inserted or altered configuration. | Verify safety module type and adjust drive configuration using Lenze Engineer. |
| C01831 | Safety module system fault | Internal hardware failure or self-test error detected within the safety module. | Internal component failure, severe power supply fluctuation, or defective module microcontroller. | Cycle 24 V supply power. If fault persists, replace internal hardware fault module and return for repair. |
| C01832 | Safety module parameter CRC error | Safety parameter set stored in the safety module is corrupted or checksum validation failed. | Interrupted parameter download or EEPROM fault. | Re-download safety configuration and verify checksum using Lenze Engineer. |
| C01833 | Safety input discrepancy error | Signal states on dual-channel safe inputs differ for longer than the configured discrepancy time. | Defective safety switch, wiring open circuit, short circuit on input channel. | Check dual-channel safety wiring and external safety sensors. |
Frequently Asked Questions
Which Lenze drives support the EPM-S302.2A safety module?
The EPM-S302.2A plugs directly into the dedicated safety option slot of Lenze 8400 StateLine, HighLine, and TopLine inverter drives.
What engineering software is required to commission the Lenze 13349826 safety card?
Configuration, parameter downloading, checksum validation, and safety acceptance report generation are conducted using Lenze Engineer software or Lenze EASY Starter.
Is the EPM-S302.2A module a direct plug-and-run replacement?
No. Replacing an EPM-S302.2A module requires downloading the saved safety parameter set to the new module's EEPROM and performing CRC checksum validation using Lenze Engineer software.
What safety certifications does the EPM-S302.2A module carry?
The module is certified up to SIL 3 according to IEC 61508 and IEC 62061, as well as Performance Level e (Category 4) according to EN ISO 13849-1.
What steps should be taken if fault C01831 occurs on the drive?
Fault C01831 indicates an internal hardware failure or self-test error within the safety module. Power cycle the 24 V DC supply; if the fault condition persists after resetting, the module requires hardware replacement.
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