Parker HAS Series - STO State Transition Diagram

Hydraulic and Electrohydraulic Actuators
HAS Series Analog Drives Manual
61
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 SSeerriieess HHAASS 550000
Catalog HY08-
SSaaffee TToorrqquuee OOffff
WWAARRNNIINNGG:: This product can expose you to chemicals including LLeeaadd aanndd LLeeaadd CCoommppoouunnddss which are known to the State of
PPRROOPP 6655 WWAARRNNIINNGG
California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov
PPaarrkkeerr HHaannnniiffiinn CCoorrppoorraattiioonn
Cylinder Division
Des Plaines, Illinois
61
wwwwww..ppaarrkkeerr..ccoomm/
cylinder
•
FFaauulltt ssttaattee
SSTTOO SSttaattee TTrraannssiittiioonn DDiiaaggrraamm
The flow chart below shows how the drive responds to STO inputs, start and stop
commands.
KKeeyy::
* = One channel operation
** = Two channel operation
Out-of-box state
Normal startup state
X11/01 low X11/03 low
Drive cannot run **
X11/01 low
X11/03 high Drive
cannot run *
X11/03 high X11/01 high
X11/01 low X11/03 low
X11/01 high
X11/03 low
Drive cannot run *
X11/01 high
X11/03 high Drive
enabled but not
running
X11/03 high
X11/03 low
X11/01 high
X11/01 low
X11/01 high
X11/03 high
Drive runs
X11/03 low X11/01 low
START command STOP command
FFaauulltt ssttaattee DDrriivvee
ccaannnnoott rruunn.. AALLLL
PPoowweerr mmuusstt bbee
ccyycclleedd
2.3 seconds 2.3 seconds
NNoorrmmaall ssttaattee
Transitional state.
User should avoid
remaining in this
state
STO State Transition Diagram