Parker HAS Series - User Connections; STO Technical Specification

Hydraulic and Electrohydraulic Actuators
HAS Series Analog Drives Manual
55
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
The STO terminals are on a 6-way terminal block X11. This is mounted on the front of the
890 control housing. Terminal designations are:
Terminal Number
Terminal Name Description
X11/01
STO A Input
0V = drive will not run, STO is active on channel A.
24V = drive is enabled to run if X11/03 is also 24V.
This input is optically isolated from all the other 890
terminals.
X11/02
STO
Common2
Signal return for STO A and STO B inputs. Connected
internally to X11/04. This terminal or X11/04 must be
connected to earth at one common point in the drive
system.
X11/03
STO B Input
0V = drive will not run, STO is active on channel B.
24V = drive is enabled to run if X11/01 is also 24V.
This input is optically isolated from all the other 890
terminals.
X11/04
STO Common2
Signal return for STO A and STO B inputs. Connected
internally to X11/02. This terminal or X11/02 must be
connected to earth at one common point in the drive
system.
X11/05
STO Status Negative
Together with X11/06, this terminal forms an isolated
status output. Formed from semiconductor
components it is therefore sensitive to voltage polarity.
This output is on (equivalent to closed relay contacts)
when the STO circuit is in the ‘safe’ state, i.e. the drive
will not cause its motor to produce torque.
However, this output should be used primarily as an
indication. In the unlikely event of a fault in the STO
circuit, this output could turn on erroneously to give a
false indication of the STO status. It must not be used
as a guarantee that the motor will not produce torque.
2
It is not recommended to connect 0V to both X11/02 and X11/04.
X11/06 STO Status
Positive
Together with X11/05, this terminal forms a volt-free
status output. See the description for X11/05.
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California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov
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Cylinder Division
Des Plaines, Illinois
52
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cylinder
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User Connections