Flowserve MX Electronic Actuator - Manual (Page 78)

Limitorque MX Electronic Actuator FCD LMENIM2306-06 – 10/13
78
Figure 4.32 – SIL control (standard)
4.19.9 SIL Mode – Enhanced SIL (Optional)
Custom software is available for the MX that permits the User to establish certain performance characteristics for partial
stroke (PS) testing and momentary contact closure ESD.
NOTE: These three inputs are normally configurable. When this SIL mode is enabled, input 0 is configurable to 2 wire
control, user defined or inhibit. Inputs 1 and 2 are pre-configured for partial stroke enable and cannot be changed by
the customer.
Input 0 (normal default - ESD) terminal 30:
• Set as disabled, user input function, signal present
Input 1 (normal default - Open Inhibit) terminal 34:
• Set as enabled, partial stroke enable function, signal present = active
Input 2 (normal default - Close Inhibit) terminal 35:
• Set as enabled, partial stroke enable function, signal absent = active
The partial stroke enable signals are setup as redundant signals for safety. There are two signal inputs, and BOTH must
be in the active state. If the partial stroke enable inputs are in the active state, and an input is detected (>800 ms) on the
momentary ESD/PSESD input, then a partial stroke ESD test will be run. If the partial stroke enable inputs are not active
or in a fault state, and an input is detected on the momentary ESD/PSESD input, then the ESD will be latched in and the
actuator will perform ESD until the ESD Release is given.
NOTE: These three inputs are the normal open-close-stop inputs. When this custom mode is enabled, they are set to
the predefined configuration and cannot be changed by the customer. The only change the customer can make is to
set the momentary ESD action (if action is position - then also the target value for the ESD) and the partial stroke target
value.
SIL CONTROL
STANDARD?
STATUS
(ON)-OK?
STATUS FUNC
ESD-OK?
MODE
USER INPUT?
CHANGE
INPUT-0?
CHANGE
INPUT 1?
NOTE 1: Input 2 can be configured like any standard input, i.e. inhibits. ESO, user input
NOTE 2: The ESO MOVE TO menu only appears of position is chosen an action.
SEE NOTE 2
SEE NOTE 1
ABSENT
STOP
OPEN
CLOSE
IGNORE
4-Wire
3-Wire Main
3-Wire Inch
2-Wire
User Input
YES
NO
YES
OFF
YES
YES
YES
YES
YES YES YES
CHANGE
INPUT-2?
SAVE
SETTINGS?
NO
SIGNAL
PRESENT-OK?
NO
ESD ACTION
POSITION-OK?
NO
MOVE TO
XXX%-OK?
NO
PROP BAND
XXX%-OK?
DEAD BAND
XXX%-OK?
NO NO
STATUS
(ON)-OK?
ABSENT
YES YES
OFF
YES
YES
YES YES YES
STATUS FUNC
PARTIAL STROKE
NO
SIGNAL
PRESENT-OK?
NO
PS MOVE TO
XXX%-OK?
NO
PROP BAND
XXX%-OK?
NO
DEAD BAND
XXX%-OK?
NO