Parker Hannifin Corporation
Cylinder Division
Des Plaines, Illinois
www.parker.com
/cylinder
Hydraulic and Electrohydraulic Actuators
HAS Series Analog Drives Manual
Catalog HY08-4005-M3
64
WARNING:
This product can expose you to chemicals including
Lead and Lead Compounds
which are known to the State of
California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov
PROP 65 WARNING
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Hybrid Actuation System
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The STO safety function must be tested regularly. The frequency should be
determined by the machinery builder. An initial frequency of once per week is
suggested.
•
When using an external safety control unit with adjustable time delay, for example
when implementing an SS1 function, the time delay must be protected to prevent
unauthorized adjustment. The adjustable time delay on the safety control unit must be
set to a value greater than the duration of 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.
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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 SO 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.
Safety Warnings and Limitations