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SEW-Eurodrive MOVIMOT flexible MMF1 C/DBC Series User Manual

SEW-Eurodrive MOVIMOT flexible MMF1 C/DBC Series
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12
Functional safety
Safety conditions
Operating Instructions – MOVIMOT
®
flexible
353
12.3.4 Requirements on startup
To validate the implemented drive safety functions, they must be documented and
checked after successful startup.
Observe the restrictions for drive safety functions in chapter "Restrictions" for the
validation of the safety functions. Non-safety-related parts and components that af-
fect the result of the test (e.g. motor brake) must be deactivated, if necessary.
For using the drive unit in safety-relevant applications, it is essential that you per-
form and record startup checks for the disconnecting device and correct wiring.
12.3.5 Requirements on operation
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 the drive unit.
The built-in diagnostic function is limited in case of a permanently enabled or per-
manently disabled STO input. Only with a level change of the STO signal, exten-
ded diagnostic functions are performed. This is why the drive safety function via
STO input must be triggered with connected line voltage at least once every 12
months for PL d according to EN ISO 13849‑1 and SIL 2 according to
EN 61800‑5‑2, and at least once every 3 months for PL e according to
ENISO13849‑1 and SIL3 according to EN61800‑5‑2 to achieve a complete test
coverage. Adhere to the following test procedure.
[1]
> 700 ms
> 700 ms
[3]
t
[2] [2] [2]
[4]
15205932683
[1] Maximum 12 months with PLd/SIL2
Maximum 3 months with PLe/SIL3
[2] Internal diagnostics
[3] High: No STO
[4] Low: STO active
To achieve complete test coverage after a device reset (e.g. after connecting the
line voltage), the test transition (STO active not active) can only be started >
700ms later. The device signals "ready for operation" or "STO – Safe Torque Off"
if it is not in fault state.
A detected hardware fault in the internal switch-off channels for STO will lead to a
locking fault state of the drive unit. If the fault is reset (e.g. by switching the line
voltage on/off or by a low level at the STO input for at least 30ms), a complete test
with internal diagnostics according to the above mentions test procedure must be
performed. If the fault occurs again, replace the device or contact the
SEW‑EURODRIVE Service.
29129451/EN – 12/2019

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SEW-Eurodrive MOVIMOT flexible MMF1 C/DBC Series Specifications

General IconGeneral
BrandSEW-Eurodrive
ModelMOVIMOT flexible MMF1 C/DBC Series
CategoryDC Drives
LanguageEnglish

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