ABB FSPS-21 - State Diagrams

DescriptionTransition
Fatal failure detected during start-up.Start-up - Failure_detected
Fatal failure detected during run.Running - Failure_detected
FSPS reached Safe-state. See section
States (page 30).
Failure_detected - Fail_safe
The FSPS-21 module can be in the following modes:
• Start-up mode
Note:
PROFIsafe communication is not used in this mode.
• Failure-detected mode
• Fail-safe mode
• RUN mode
The FSPS-21 module can be in the following states:
• Operational
• Safe (with the following sub-states based on the PROFIsafe communication status)
• Module passivation
• Module passivation & reintegration
• Module passivation with a command.
The FSPS-21 module modes and states are described in the following figure and tables.
Note:
The FSPS-21 module stays in Safe state until it has received valid F-Parameters from the
safety PLC.
State diagrams
Overview of modes, states and transitions in the FSPS-21 module during normal operation.
118 PROFIsafe