Parker AC890PX Series, Руководство по эксплуатации продукта

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Safe Torque Off
AC890PX AC Drive
the braking ramp controlled by the 890 with maximum load inertia and from maximum speed. Any
external forces must also be considered, e.g. effects due to gravity.

When implementing a SS1 function with the 890, the user is responsible for ensuring the drive’s
configuration will allow a controlled braking ramp to be initiated by the external safety device. This
is particularly important when using serial link communications for normal control of the drive.

During the active braking phase of SS1 or Stop category 1 (controlled stop with safely monitored
time delay according to EN60204-1), faulty operation of the drive must be allowed for. If a fault in
the drive system occurs during the active braking phase, the load may coast to a stop or might even
actively accelerate until expiration of the defined time delay. It is not the remit of this document to
specify these measures. This is for the user to assess.

When the 890 detects either an internal STO fault or an external single-channel user fault, the user
must immediately fully resolve the fault. The user must ensure dual-channel operation has been fully
restored before attempting to use the 890 STO safety feature.
DANGER
FAILURE TO DO SO COULD RESULT IN STO NOT BEING ACHIEVABLE, AND THUS THE
MOTOR MAY ROTATE UNEXPECTEDLY AND COULD RESULT IN INJURY, DEATH OR
DAMAGE. FURTHER OPERATION OF THE 890 WITHOUT RESOLVING THIS FAILURE IS
ENTIRELY AT THE USER’S OWN RISK. SEE SAFETY CATEGORY DEFINITIONS AND
LIMITATIONS, REFER TO EN ISO 13849-1:2008.

It is the user’s responsibility to ensure that their overall control implementation recovers safely from
supply loss or dips.

In all instances it is the user’s responsibility formally to perform suitable risk assessments, and
invoke and fully validate the necessary risk reduction measures after having thoroughly understood
the application, the drive product and its features.