AUMA SA3-SA100, Manual, Page: 8 / 48

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• Selector Switch Change.
• End Position
• ESD
More details of this feature are available in AIUS User Manual (Doc. No.: 4-AIUS-
MANUAL-39396).
Partial valve stroke test
(PVST) option
This feature is used in checking correct functioning of valves which are not operated for a
long period. When PVST is triggered the valve moves to particular percentage and come
back to the same end position and gives PVST result. The features are:
• PVST can be triggered externally through a switch or via MODBUS.
• PVST command can be given through MODBUS using dedicated registers.
• PVST Position can be configured in the following two ways.
From Open End
From Close End
• PVST Percentage can be set to any of the three options.
5%, 10%, 15%
• PVST Failure: This failure occurs when the PVST command doesn't take place after
a specified time (that is specific to actuators based on its RPM and No. of Turns).
This failure is indicated by using any one of the programmable relays present in your
module.
Inhibit option Inhibit is an interlock for open close operations. Inhibit Operation can be Enabled or
Disabled in Software (Program Mode). In this module, separate terminals for Inhibit Open
and Inhibit Close are available. Based on this, Open/Close Commands can be inhibited.
Local control station
(LCS) priority
When this feature is enabled, the user can control the actuator in remote 4 –wire mode of
operation even when in 4-20mA or MODBUS mode of Operation.
Remote local stop
This option is also software configurable and can be enabled in Program Mode. The
actuator should stop running in Remote Mode when open/close rotary knob rotated in the
Actuator Front Panel. No commands should be accepted by the actuator until it is reset.
Timer mode
Timer mode is used to control the valve movement. This mode allows us to open or close
the valve slowly towards the end position after reaching a certain distance with
continuous operation.
Configurable Options:
• Open timer start Valve Position: The user has to set the valve position at which this
Timer mode should go on for Open Command.
• Open ON time: This parameter decides the amount of time (in s) the actuator runs in
Open direction before shutting off for Open OFF time (in s). This continues to
happen until the respective limit switch is hit (unless the switch is bypassed).
• Open OFF time: This parameter decides the amount of time (in s) the actuator shuts
off before running in open direction for Open ON time (in s). This continues to
happen until the respective limit switch is hit (unless the switch is bypassed).
• Close timer start Valve Position: The user has to set the valve position at which this
Timer mode should go on for Close command.
• Close ON time : This parameter decides the amount of time (in s) the actuator runs
in Close direction before shutting off for Close OFF time (in s).This continues to
Weather proof actuators with 3.XMP-SIL &
Data logging