Free programmable compact-type safety controller with Safe Motion (PESSRAL)

  • Integrated axis monitoring for 1 axis
  • 3 Encoder interface
  • 14 Safe digital inputs
  • 2 Safe digital outputs 
  • 1 Safe relay output 
  • 2 Clock / auxiliary output
  • Safety control suitable up to PL e (EN ISO 13849-1) / SIL3 (IEC 61508), use as PESSRAL acc. to DIN EN 81-20/50:2014
  • optional: safe/non-safe fieldbus interface

Characteristic of the module

Characteristic of the module

  • Extendable up to:
    • max. 42 safe digital inputs,
    • max. 12 safe digital outputs,
    • max. 20 safe digital I/O‘s,
    • max. 9 safe relay outputs,
    • max. 10 auxiliary outputs,
    • max. 1 safe axis
  • Logic processing up to PL e acc. to EN ISO 13849-1 or SIL 3 acc. to IEC 61508
  • Movement monitoring of one axis up to Pl e EN ISO 13849-1 or SIL 3 acc. to IEC 61508
  • Speed monitoring:
  • RPM-monitoring
  • Standstill monitoring
  • Sense of rotation monitoring
  • Safe incremental dimension
  • Emergency Stop monitoring
  • Position monitoring
  • Position range monitoring
  • Trend range monitoring
  • Target position monitoring
  • Freely programmable compact-type control for up to 800 IL instructions
  • functionplan oriented programming via SafePLC²
  • Pulse outputs for cross-shorting detection of digital input signals
  • External contact monitoring of connected switchgear (EMU)
  • Switchable safe semi-conductor outputs pn-, pp- switching for safety-relevant functions
  • Monitored relay outputs for safety relevant functions
  • Complete speed and position-based safety functions for drive monitoring in accordance with
    IEC 61800-5-2 are integrated in firmware:
    • Spatial functions for safe speed and are monitoring are possible Comprehensive
      diagnostics functions integrated
  • Umfangreiche Diagnosefunktionen integriert
  • Parameter management for expansion modules in base module
  • Coded status display via front-side 7 segment display and status LEDs
  • Multifunction buttons (quit, start, reset) can be operated from the front side
  • Configurable via SafePLC² über USB serial adapter or Ethernet based field bus
  • Optional: expandable with communication module:
    • Standard and safe field bus protocols for communication with a higher level controller
      (PROFIBUS, PROFINET, DeviceNet, CANopen, CAN2.0, EtherCAT)
    •  Field bus protocols with the same hardware can be switched with SafePLC²
    •  Safe remote I/O communication for data exchnage with distrubted I/O systems
  • CAN-Communication in connection with the SMX5x for diagnostics via backplane bus assembly on hat rail
  • The mechanical construction of the SMX11P (/5x*) is dependent on the respective forms of the base module

* Optional: expandable with communication modules:
  SMX51 CAN2.0 / SMX52 PROFIBUS / SMX53 PROFINET / SMX54 CANopen / SMX 55 EtherCAT

Order information

Base module


descriptionitem no.


base module, with Safe Motion for one axis (PESSRAL)




description item no.


Programming cable SMX1010


Terminal connector, screwterminals (set), encoded for cabling SMX11Pon request


Terminal connector, spring terminals (set), encoded for cabling SMX11Pon request


T-Bus connector volltage-carrying (grey)1015


Y-cable for encoder splittingon request



descriptionitem no.


Communication processor CAN2.01003


Communication processor PROFIBUS1004


Communication processor PROFINET1096


Communication processor CANopen1002


Communication processorEtherCAT1107



descriptionitem no.

SafePLC² 1st

Programming software, 1te License incl. Hardlock


SafePLC² 2nd

Programming software, 2te License incl. Hardlock1646

SafePLC² 3rd

Programming software, 3te License incl. Hardlock1647