Flowserve UEX Limitorque - Manual (Page 23)

23
Limitorque UEX FCD LMENIM1205-03-AQ – 05/15
flowserve.com
6.2 Local Control
The Control Panel includes a red Local/Stop/Remote selector switch (padlockable in all three positions;
a ¼" (6 mm) hasp is recommended) and a black Open/Close rotary switch (spring-return to center). The
Open and Close switches may be configured to allow either push-to-run (inching) control or maintained
control.
Local Indication
The Control Panel includes the following:
• 32-character graphical LCD
Displays valve position as “PERCENT OPEN” and the current actuator status.
• Red/Green LED Indicators – the color assignment for the red and green LEDs is reversible as
standard.
Red ON = Valve fully open
Red “BLINKING” = Valve opening
Green “BLINKING” = Valve closing
Green ON = Valve fully closed
• Yellow LED
Yellow ON = Actuator available for remote operation,
= Valve stopped in Intermediate position.
Yellow “BLINKING” = Monitor Relay de-energized, actuator not available for remote operation.
6.3 Remote Control Modes of Operation
The actuator may be controlled remotely by two, three or four wires.
• Four-Wire Control – Three momentary contacts. Valve can be opened, closed or stopped.
• Two-Wire Control – Single open or closed contact. Valve can be opened or closed, but not stopped in
mid-travel.
• Three-Wire Maintained – Two momentary contacts for self-maintained control. Valve can be opened
or closed but not stopped in mid-travel.
• Three-Wire Inching – Two “push-to-run” contacts. Valve can be opened, closed and stopped in
mid-travel.
Refer to Figure 15.4 for remote wiring connections.