Masoneilan SVI II AP Installation and Maintenance ... - GE Energy

GE Oil and Gas
SVI II AP Instruction Manual
Tight Shutoff
Configuring TS ON
Turning TS OFF
Changing Language
Tight Shutoff is an optional performance feature that prevents leakage at the closed
position. Without this feature, at the closed position with an input signal of 0%, the valve
may be forced tight against the seat with maximum available actuator force or it may be
only touching the seat with minimum force. In either case, it is under control.
To prevent leakage that can occur in the second case, configure TS ON and set a value
of position setpoint below which the actuator applies maximum seating force. As the
position signal drops toward the TS value, SVI II AP moves the valve to the TS position
value. When the position reaches the TS value SVI II AP applies maximum actuator
force.
The TS function has 0.5% deadband to prevent chatter. If TS is set ON at 2%, for
example, then the valve begins to open when the setpoint reaches 2.5%.
1. Press * to turn TS ON.
2. Press + to increase TS.
3. Press - to decrease TS.
4. Press * when finished to return to the CONFIG menu.
The CONFIG menu displays TS ON.
1. Press * to turn TS OFF.
2. Press + to continue scrolling through the menu.
The local display language can be English or French.
1. Press * to toggle from ENGLISH to FRANCAIS.
2. Press + to continue to scroll through Config menu.
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