MOVIFIT® – Options
Safety concept
PROFIsafe option S11 is an integrated safety-oriented electronics component with failsafe inputs and
outputs (F-DI, F-DO). The safety concept of this component is based on a safe status for all safety-oriented
process variables. For PROFIsafe option S11, this value is "0", for all inputs F-DI and outputs F-DO.
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The 2-channel redundant system structure of the safety component ensures that, with suitable
monitoring mechanisms, requirements SIL3 according to EN 61508, category 4 according to EN 954-1
and performance level "e" according to EN ISO 13849-1 are fulfilled. When the system detects a
fault, it responds by reverting to a safe status. This makes the safety function available
in the form of failsafe inputs and outputs connected to a higher-level safety control.
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The failsafe output F-DO_STO allows the 24 V supply to the inverter to be disconnected, which results in safe disconnection.
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PROFIsafe option S11 - Features
- PROFIsafe communication
- "Safe stop" function by deactivation of 24 V
– Stop category 0 according to EN 60204-1 (STO)
- Safety category 3 to EN 954-1
- 2 x 2-pole safe inputs (F-DI)
- 2 x 2-pole safe outputs (F-DO)
- 1 x 2-pole safe output for safe disconnection of the drive (F-DO_STO)
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As regards safe disconnection, the safety category of the basic MOVIFIT® unit applies to the entire
MOVIFIT® MC / MOVIMOT® system with PROFIsafe option S11 and MOVIFIT® FC with PROFIsafe option S11.
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This means:
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MOVIFIT® MC / MOVIMOT® may only be used with applications up to category 3 according to EN 954-1.
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MOVIFIT® FC may only be used in applications up to category 3 according to EN 954-1 and performance level "d" according to EN ISO 13849-1.
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Schematic representation of
safety-oriented communication via
PROFIsafe for MOVIFIT® FC
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Schematic representation of safety-oriented communication via PROFIsafe for
MOVIFIT® MC / MOVIMOT®
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 "Safety-oriented communication")
 "Safety-oriented communication")
Safety concept...