EN60204
EN 954-1 ISO 13849-1
Safety door monitoring or
emergency shut-down with
protection monitoring switch and
time delay of several drives
Active braking occurs when the safety
door is opened, the emergency shut-
down switch is activated or tripping of
the ‚STO’ occurs due to time delay.
Cat. 3 PL e 1
Important
The category 3 and PL e protection level can only be achieved with an active STO-Power-On-Test.
Explanation
The protection switch unit A1 must be set up with a fail-safe time delay as determined and required by the
specific category relating to the application environment.
The 638 Servo Drive must be properly configured for the operating environment
(See: Chapter
■ Configuration and Parameter Settings).
Only 16 drives could plug together in a group.
Note
The acknowledgement is only necessary, when after the cancellation of the STO function by the
automatic start-up, a potential danger for the people in the area or the equipment exists.
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