Hybrid Actuation System
Cylinders SSeerriieess HHAASS 550000
Catalog HY08-
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• Only appropriately qualified professional personnel are permitted to install the STO
function and commission it. They must disseminate and make available all appropriate
instructions and documentation to all personnel who may come into contact with or
operate the STO and provide suitable training on the 890 to ensure it is operated in the
correct manner and to avoid loss of life, injury or damage.
• The 890 STO function is a factory-fitted and factory-tested feature. It is only compatible
with firmware versions 3.5 and higher. Repairs to 890 STO featured-products are to be
carried out only by Parker. Any unauthorized attempt to use firmware before version
3.5, or to repair or disassemble the product will render any warranty null and void.
Upgrading of non-STO product to STO product is strictly prohibited. PARKER
HANNIFIN MANUFACTURING WILL NOT ACCEPT ANY LIABILITY FOR FAILING TO OBEY
THESE INSTRUCTIONS OR FOR ANY CONSEQUENTIAL LOSS OR DAMAGE.
• It is important that the 890 product environment including all aspects of its CE
conformance and IP etc., specified elsewhere in this manual, is maintained to ensure
the safety integrity of the STO function.
• Should synchronous motors be operated in the field weakening range, operation of the
STO function may lead to overspeed and destructive life-threatening overvoltages as
well as explosions in the drive. Therefore, the STO function must NEVER be used with
synchronous drives in the field-weakening range. The user must ensure this condition
is prevented.
• When using synchronous permanent magnet motors, shaft movement over a small
angle is possible if two faults occur simultaneously in the power section of the drive.
This depends on the number of motor poles. The maximum angle is:
Rotary motors: 360° / number of poles
Linear motors: 180° electrically.
It is the user’s responsibility to assess, validate and safeguard as necessary against
this
potential hazard.
• If external forces can act on the motor and/or load to cause it to move, additional
measures must be taken by the user to restrain it, for example mechanical brakes.
Examples of external forces are suspended loads (effect of gravity), and other web-
tensioning devices.
• The 890 STO feature does not provide or guarantee any galvanic isolation in
accordance with EN 60204-1 Section 5.5. This means that the entire system must be
isolated from the mains power supply with a suitable electrical isolation device before
any drive or motor maintenance or replacement procedures are attempted. Note that
even after the power has been isolated, dangerous electrical voltages may still be
present in the 890 drive. Safe discharge times and details are specified elsewhere in
this manual.
• The STO function must not be used for electrical isolation of the 890 drive and power.
Whenever any personnel require to work on the drive, associated motor or other power
items, they must always use recognized and suitable electrical isolation devices and
lock-off procedures as appropriate.
• Terminal X11/02 or X11/04 must be connected to earth at one common point in the
drive system. For multi-drive systems this can be a shared earth point.
• The STO user output, serial communications or MMI messages relating to accessing or
viewing any safety monitoring statuses are for information only and should not be relied
on. They are not part of the drive module safety system and its associated PL/SIL
declared rating. Any customer use of these must be appropriately risk assessed by the
customer in accordance with any relevant standards or regulations.
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