Lenze 13292429 EPM-S700.1B i700 STO Safety Module
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Product Information
The Lenze 13292429 EPM-S700.1B is a dedicated Safe Torque Off (STO) functional safety option module designed for the Lenze i700 Cabinet servo inverter series. Engineered to deliver hardware-based safety shutdown without removing main operating power from the drive controller, this safety module enables controlled torque removal while keeping control electronics active. Compliant with international functional safety standards up to SIL 3 per IEC 61508 / EN 62061 and Performance Level e (PL e), Category 4 per EN ISO 13849-1, the EPM-S700.1B protects machine operators during manual interventions, routine maintenance, and emergency stopping procedures. The unit features plug-in terminal block connections that allow clean installation directly into i700 drive option slots.
Field connections utilize a dual-channel architecture operating through safety inputs SIA and SIB, powered by a nominal 24V DC supply with an operational input range of 18V DC to 30V DC. System integration and status tracking are natively supported in EtherCAT fieldbus environments, where safety status bits map directly into the i700 drive status word. Commissioning a replacement unit requires connecting the plug-in safety wiring terminals and conducting a standard safety proof test and functional validation procedure to confirm dual-channel response. Software setup and parameter readouts are performed using Lenze EASY Starter or Lenze PLC Designer engineering tools. When replacing a failed option card on a multi-axis system, ABC Industrial Parts can assist with tested replacement units to restore machine safety functions quickly.
Diagnostic state evaluation relies on both physical visual indicators and fieldbus status signals. A front-panel STO Status LED provides immediate localized feedback on active safety states, normal drive operation, channel discrepancies, or internal hardware conditions. Remote diagnostic routines can evaluate fault codes such as 0x00220010 for active STO states, 0x00220011 for channel timing discrepancies between SIA and SIB, and 0x00220012 for internal board failures. While wiring discrepancies and external safety circuit tripping can be cleared by correcting 24V supply signals and power cycling the drive, internal hardware errors are non-serviceable in the field; replacing the module or installing a tested exchange unit from ABC Industrial Parts offers the most reliable path back to production.
Technical Specifications
| Manufacturer | Lenze |
| Part Number | 13292429 |
| Model/Type | EPM-S700.1B |
| Component Type | Safety Module |
| Product Family | i700 Cabinet |
| Safety Function | Safe Torque Off (STO) |
| Safety Level (IEC 61508 / EN 62061) | SIL 3 |
| Performance Level (EN ISO 13849-1) | PL e, Category 4 |
| Nominal Supply Voltage | 24 V DC |
| Supply Voltage Range | 18 - 30 V DC |
| Digital Safety Inputs | 2 |
| Connector Type | Plug-in terminal block |
Programming and Configuration
The Lenze EPM-S700.1B safety module interfaces directly with Lenze i700 cabinet servo inverters, making safety parameter evaluation straightforward within Lenze engineering environments. Diagnostics and status bit readouts are natively accessed using Lenze EASY Starter software or the Lenze PLC Designer programming suite. These tools enable maintenance staff and system integrators to monitor the real-time status of safety input channels SIA and SIB without altering core drive program logic.
When configuring or replacing an EPM-S700.1B unit, no separate complex safety software upload is required for the option card itself. However, a mandatory functional safety proof test and system validation must be completed after hardware installation. Using EASY Starter, technicians can verify that safety flags in the i700 status register transition correctly between active and disabled states during initial commissioning.
Communication and System Integration
System integration for the EPM-S700.1B relies on direct plug-in mounting into Lenze i700 cabinet servo inverters combined with external dual-channel safety wiring. Terminal connection is handled via plug-in terminal blocks, connecting the dual 24V DC safety inputs SIA and SIB directly to upstream safety switching devices, such as E-stop buttons, safety relays, or light curtains.
At the fieldbus level, safety state information is passed through the host i700 servo inverter over EtherCAT networks. Upstream EtherCAT controllers read dedicated safety status bits from the drive status word registers, enabling central PLC systems to track safety circuit conditions across multi-axis motion control architectures in real time.
Diagnostics and Status Indication
Localized visual status indication is provided directly on the front panel of the EPM-S700.1B module via a dedicated STO Status LED. The LED displays solid and blinking states to differentiate between active STO safety states, standard drive operating conditions, channel switching discrepancies, and internal hardware faults.
In addition to visual panel indications, advanced diagnostics are accessible via software. Drive status word registers pass safety status bits to EtherCAT fieldbus master controllers and Lenze EASY Starter diagnostic software, allowing quick pinpointing of wiring faults or unexpected safety shutdowns.
Status LED Indicators
| LED | Color/Status | Meaning |
|---|---|---|
| STO Status LED | Red - Solid / Blinking | Indicates active STO safety state, active drive state, or safety circuit fault/discrepancy. Blinking or red indicates discrepancy or hardware fault requiring inspection or module replacement. |
Replacement and Spare Part Considerations
Replacing a faulty EPM-S700.1B option card on a Lenze i700 drive involves a direct hardware swap. The module uses plug-in terminal blocks, permitting fast disconnection of 24V safety wiring without re-terminating individual wires. Ensure power is fully removed from the drive unit before extracting or inserting the module.
Following module replacement, safety regulations require conducting a functional validation test to verify dual-channel STO operation. Technicians must confirm that removing 24V DC from inputs SIA and SIB reliably disables motor torque and that the status bit correctly updates in Lenze EASY Starter before returning the equipment to service.
Error Codes & Fault Codes
The following error codes may be displayed during operation or diagnostics:
| Code | Name | Description | Possible Cause | Recommended Action |
|---|---|---|---|---|
| 0x00220010 | Safety module STO active | Safe Torque Off state triggered via safety inputs SIA/SIB. | 24V supply removed from safety inputs SIA or SIB, safety relay open, or E-stop button pressed. | Check safety circuit wiring, reset external emergency stop switches, apply 24V DC to safety inputs. |
| 0x00220011 | Safety input channel discrepancy | Discrepancy time exceeded between safety input channels SIA and SIB. | Asynchronous switching of safety input channels, broken wire on one channel, contact bounce, or switch failure. | Inspect wiring on safety inputs SIA and SIB, verify dual-channel contact simultaneity, cycle power to reset error. |
| 0x00220012 | Safety module internal hardware fault | Internal diagnostic circuit detected board-level failure in safety module. | Internal component failure, severe overvoltage on safety terminals, or hardware corruption. | Internal hardware fault — power cycle drive unit. If fault persists, replace EPM-S700.1B safety module. |
Frequently Asked Questions
What is the primary function of the Lenze EPM-S700.1B safety module?
The EPM-S700.1B provides Safe Torque Off (STO) functional safety for Lenze i700 cabinet servo inverters, safely disabling motor torque while leaving the drive control electronics powered.
What safety performance standards does the EPM-S700.1B meet?
The module is certified for SIL 3 according to IEC 61508 / EN 62061 and Performance Level e (PL e), Category 4 according to EN ISO 13849-1.
What are the voltage requirements for safety inputs SIA and SIB?
The digital safety inputs operate at a nominal 24V DC supply, within an allowable voltage range of 18V DC to 30V DC.
How do I resolve fault code 0x00220011 on this module?
Fault code 0x00220011 indicates a switching discrepancy between channels SIA and SIB. Inspect the safety wiring, check for asynchronous contact operation or broken wires, and cycle power to clear the condition.
Which software tools support diagnostics for the EPM-S700.1B?
Safety status monitoring and diagnostics can be performed using Lenze EASY Starter, Lenze PLC Designer, or directly through EtherCAT status word registers.
What procedures are required after installing a replacement EPM-S700.1B module?
After attaching the module and plug-in terminal block, perform a mandatory safety proof test and functional validation to confirm that dual-channel STO triggering correctly stops motor torque.
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