Flowserve UEX Limitorque - Manual (Page 37)

37
Limitorque UEX FCD LMENIM1205-03-AQ – 05/15
flowserve.com
Recommended settings are:
• S1a – Normally closed contact at valve fully CLOSE
• S1b – Normally closed contact at valve fully OPEN – Default position. See wiring diagram.
• S2a – Normally open contact at valve fully CLOSE
• S2b – Normally open contact at valve fully OPEN – Default position. See wiring diagram.
The standard contacts are rated for 2.0 A at 30 VDC and 0.5 A at 125 VAC.
11.2 Monitor Relay (RM)
The monitor relay provides immediate indication of problems that prevent remote valve operation. It has
a normally open contact and a normally closed contact (1 x SPDT contact) and is energized when the
three-phase supply is present and the actuator is in a normal/healthy state.
The relay will de-energize if any of the following events occur:
• Loss of one or more phases of the three-phase power supply
• Loss of internal control supply
• Jammed valve detected
• Motor overtemp is active (unless thermostat is configured to OFF)
During configuration, the following parameters may be added to the monitor relay function:
• Selector switch is in “Local” mode
• Selector switch is in “Stop” position
• Overtorque
• Inhibit signal active
• ESD signal active (The user can enable or disable “local” mode and “stop” position. Default is
enabled.)
The monitor relay resets when the faulty state is rectified. The standard contacts are rated for 5.0 A at
250 VAC, 30 VDC. The monitor relay can be disabled if the user chooses.
11.3 Exact End Position Indication
On torque-seated valves, the end-of-travel indication switch trips when the required torque is achieved
at the end of travel. This ensures that remote, self-latched signals will not be disconnected prematurely,
and that the valve will be tightly seated.