Flowserve MX Electronic Actuator SIL Safety IOM - Manual (Page 31)

31
Limitorque MX Electronic Actuator FCD LMENIM2350-01 – 9/13
flowserve.com FLOWSERVE PROPRIETARY INFORMATION
Use or disclosure of this information is subject to the restrictions on the title page of this document
11
An external contact may be used to place the actuator in emergency shutdown mode. An ESD contact may be connected
to the actuator to override existing command signals and send the valve to a predetermined position.
11.1 ESD Override Setup Procedure
It may be desirable that ESD override other events. These events are selectable. The “>” symbol after ESD indicates that
ESD will override that particular event; inputs through motor thermostat list the choices.
Figure 11.1 - Configuring SIF (ESD) priority
11.1.1 Inhibit Override
Default = INHIBIT>ESD
Select “NO” to choose:
“ESD>INHIBIT” – ESD overrides active • inhibit signal
“INHIBIT>ESD” – Active inhibit signal will override ESD
NOTE: Removing the wires to these terminals can disable active inhibit.
YES YES YES
NO
YES YES YES
YES
YES
YES
YES YES
YES YES YES
NO NO NO
NO NO NO NO
* * *
* CAUTION: The user may select “ESD” to
override these situations. Should these
conditions occur and the user has
selected “ESD>,” be advised that
the actuator motor may be compromised
Therefore, selection of “ESD>”
in these situations will void the
warranty and certification.
*
CHANGE
ESD OVERRIDES?
PRIORITY
INHIBIT>ESD
PRIORITY
LOCAL CMD>ESD
PRIORITY
STOP>ESD
PRIORITY
JAMMED>ESD
PRIORITY
LOST PHASE>ESD
PRIORITY
OVERTORQUE>ESD
PRIORITY
INHIBIT
PRIORITY
LOCAL CMD
PRIORITY
STOP
PRIORITY
ESD>JAMMED
PRIORITY
ESD>LOST PHASE
PRIORITY ESD>
OVERTORQUE
PRIORITY
NW ESD>LOCAL ESD
PRIORITY
*
YES
YES
NO
PRIORITY
THERMOSTAT>ESD
PRIORITY
ESD>THERMOSTAT
*
YES
YES YES
NO
PRIORITY
2SPD > ESD
PRIORITY
ESD > 2SPD
*
LOCAL ESD>NW ESD
YES
YES
NO
PRIORITY
OIL OVERTEMP>ESD
PRIORITY
ESD>OIL OVERTEMP
*
YES
YES
NO
PRIORITY
TORQUE TIMER>ESD
PRIORITY
ESD>TORQUE TIMER
ESD (Emergency
Shutdown) Overrides