Flowserve MX - Page 74

Limitorque
®
MX Electronic Actuator FCD LMENIM2306-09-AQ – 08/17
74
Input 3 (normal default – stop) terminal 26:
• Set as enabled, ESD release function, signal absent = active
Input 4 (normal default – open) terminal 25:
• Set as enabled, ESD Release function, signal present = active
Input 5 (normal default – close) terminal 27:
• Set as enabled, momentary ESD/PSESD function, signal present > 800 ms = active, ESD action = Close, partial stroke
target position = 0% open
The ESD release signals are setup as redundant signals for safety. There are two signal inputs, and BOTH must be in
the active state. If there is an active ESD and both ESD release inputs are in the active state, the ESD will be unlatched
and the unit will return to normal operation. If the ESD release inputs are in a fault state, an active ESD will NOT be
released. The ESD release inputs will have no effect on a partial stroke ESD test. The momentary ESD/PSESD input will
be ignored if there is a signal present for less than 100 ms, and is guaranteed to latch in the ESD/PSESD if the signal is
present for greater than 800 ms. Once the ESD is latched in, the unit will perform the ESD action. In this case the ESD
will move the unit to the close limit and remain in ESD mode until the ESD release indication is given using the ESD
release inputs.
LMENIM2306-09 AQ.indd 74 Mittwoch23.08.17 08:53