9
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.
2.7
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.
2.8
REMOTE SELECTOR SWITCH
This option allows the user to create a selector switch for the actuator in Remote mode. It is mainly
used to lock/unlock the Local operation of the actuator using push buttons through a Remote
command. This is serves as a software lock.
2.9
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.
2.10
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 STOP key is pressed in the Actuator Front Panel. No
commands should be accepted by the actuator until it is reset.
2.11
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).