Hydraulic and Electrohydraulic Actuators
HAS Series Analog Drives Manual
67
Parker Hannifin Corporation
Cylinder Division
Des Plaines, Illinois USA
www.parker.com
/cylinder
Catalog HY08-4005-M3
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
Safe Torque Off
Hybrid Actuation System
Cylinders S
Seerriieess H
HA
AS
S 550000
Catalog HY08-
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Cylinder Division
Des Plaines, Illinois
67
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Two levels of checking are required. A comprehensive check, and a regular check.
It is for the user / machine builder to determine the frequency of these checks based
on their knowledge, use of the machine, appropriate standards and any legal
requirements.
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ALL TESTS MUST PASS. IF ANY TEST FAILS, IT MUST BE INVESTIGATED AND
RECTIFIED BEFORE ATTEMPTING TO PUT THE EQUIPMENT INTO SERVICE.
FURTHER OPERATION OF THE 890 WITHOUT RESOLVING THIS FAILURE IS
ENTIRELY AT THE USER’S OWN RISK. FAILURE TO DO SO COULD RESULT IN
INJURY, DEATH OR DAMAGE. PARKER HANNIFIN MANUFACTURING WILL NOT
ACCEPT ANY LIABILITY FOR FAILURE TO DO THIS OR FOR ANY CONSEQUENTIAL
LOSS OR DAMAGE. SEE SAFETY CATEGORY DEFINITIONS AND LIMITATIONS,
REFER TO EN ISO 13849-1:2008.
When STO becomes active during any test, power to the motor must be
seen by the user to be quenched instantaneously. Note: the drive should
respond in less than 10 milliseconds.
All STO checks should be performed after the 890 has been
commissioned for speed control.
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A comprehensive check of the STO function ensures the overall integrity of the STO
functionality. It proves the independent operation of each individual channel (including
during the normal dual channel operation), the STO user feedback operation, and the
essential single fault detection.
It must always be performed:
•
During factory test
•
During commissioning activities
•
After repair or replacement of the 890
•
After any hardware or software design changes which may affect the 890 concerned.
•
After each intervention into the system and control wiring.
•
At defined maintenance intervals as determined by the machine builder and /or user
risk assessments and associated verification assessments.
•
If the machine has been idle for more than a period of time determined by the
machinery builder and user risk assessments.
•
The check must be made by suitably qualified professional personnel following all
necessary safety precautions. They must be fully conversant with all equipment
concerned.
NOTE: In the following text where it is required that “all power” is removed, this can be
validated by ensuring that the “STATUS” LED at the top of the control card and beneath
terminal X10 goes and remains off (i.e., it is not flashing).
STO Function Checking
Comprehensive Check