3
Safety conditions
Startup requirements
Manual – MOVIGEAR
®
B
18
3.4
Startup requirements
•
To validate the implemented safety functions, they must be documented and
checked after successful startup (validation).
Observe the limitations for safety functions in chapter "Limitations" for the valida-
tion of the safety functions. Non-safety-relevant parts and components that affect
the result of the validation test must be deactivated, if necessary.
•
For using MOVIGEAR
®
in safety-relevant applications, it is essential that you per-
form and record startup checks for the disconnecting device and correct wiring.
3.5
Operation requirements
•
Operation is only allowed within the limits specified in the data sheets. This prin-
ciple applies to the external safety controller as well as to MOVIGEAR
®
and ap-
proved options.
•
The built-in diagnostic function is limited in case of a permanently enabled or per-
manently disabled STO input. Only when the STO signal is activated ("Low" to
"High"), extended diagnostic functions are performed. This means that the STO in-
put must be switched at least once in three months while the supply system is con-
nected to achieve a complete test coverage. Follow this test procedure:
max. 3 months
>500 ms >500 ms
High: no STO
Low: STO active
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•
To achieve complete test coverage after a unit reset (e.g. after connecting the sup-
ply system), the test transition (STO active → not active) can only be started min.
10 seconds later. The unit must (already) be signaling "ready for operation" or
"STO – safe torque off" and may not be in error state.
•
A detected hardware fault in the internal switch-off channels for STO will lead to a
locking error state of MOVIGEAR
®
. When the error is reset (e.g. by switching the
power supply off and back on), a complete internal diagnostics test run must be
performed according to the above test procedure. If the error re-occurs, replace
the unit or contact SEW Service (for detailed information about possible error
states, refer to the respective MOVIGEAR
®
operating instructions).
22746250/EN – 12/2016
