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Guidelines easily and safely implemented!

The SMX Pessral offers an optimal solution for the strict requirements in the field of elevator technology. With the compact, programmable basic control units SMX10P / 11P , they can be implemented easily and flexibly.

The safety modules are EU-type tested as PESSRAL component up to SIL 3 applications. The integrated secure logic control in combination with a variety of safety functions for speed, ramp and position monitoring leaves every scope for specific solutions and use of proven components. With the easy-to-configure data interface, you can adapt to your elevator control quickly and safely!

The series at a glance

  • For use as a pessral according to DIN EN 81-20/50:2014, in safety functions up to SIL3
  • Secure logic control, extensive safety functions for speed, ramp and position monitoring
  • 14 safe digital inputs, 2 auxiliary outputs, 3 switch-off channels, of which 1 safe relay output
  • Flexible interface for speed and position encoders
  • Configurable data interface for elevator control via CAN / CANopen / Real-Time Ethernet
  • Optional decentralized expansion / arrangement via CAN or Ethernet connection
  • Simple and transparent programming and parameterization with SafePLC²

Safety functions

acc. to DIN EN 81-20/50:2014

  1. SIL3: Monitoring Decommissioning and powerless switching drive
  2. SIL3: Monitoring triggering / activating catching device
  3. SIL2/3: Delay after speed control at shortened pit/shaft head, replacement mechan. emergency brake switch, evaluation of door position monitoring / movement when the door is open, activation of ramp and speed monitoring, post-reset monitoring
  4. SIL3: Inspection control (emergency braking, inspection, return switch, reduced speed)
  5. SIL3: Monitoring locking position and locking lift cage
  6. SIL3: Position monitoring and triggering telescopic apron
  7. SIL3: Monitoring locking position and locking manhole door


SMX Pessral 2018