Manual 37143A
MFR 15 - Protection Relay & Control
© Woodward
Page 83/119
Auto Acknowledgement of Messages
Auto-clearing
Display ON
Messages auto acknowledgment
ON/OFF
ON
................ After the alarm condition is no longer detected, the message in the
display is deleted.
OFF
.............. The alarm message remains in the display after the fault condition is
no longer detected until manually cleared. The subsequent screen of
this function is not displayed.
NOTE
The subsequent parameter “
Clearing display after
” is not visible if "
Auto-clearing Relays
"
is configured to "
OFF
".
Clearing display
after 00s
Clear displayed message delay
1 to 99 s
Alarm messages, which have been enabled, will be acknowledged after this config-
ured delay time expires. This delay will initiate once the measure value ex-
ceeds/falls below the threshold limit +/- the hysteresis
Changing the Relay Assignment (Relay Manager)
Change relay-
allocation? YES
Change relay assignment?
YES/NO
This parameter permits the user to change how the relay outputs are configured.
Refer to the list of parameters.
YES
.............. The relay assignments can be configured and the user may define the
relay functionality and assignments. The subsequent screens are dis-
played.
NO
................ The relays are configured with the factory default settings. The sub-
sequent screens are not displayed.
NOTE
All relay outputs are configured the same. The following is an example showing relays 1 through 3.
Example:
Relay 1 to 3
Funct. relay 123
(R=releases) RRR
Function of the relays 1, 2 and 3
EA/R
The individual relays may be configured as either E=Energizes (Normally Open
contacts) or R=Releases (Normally Closed contacts).
E
................... The relay is configured as normally open (N.O.) contacts. The relay
will energize only if the assigned monitoring function has tripped.
R
................... The relay is configured as normally closed (N.C.) contacts. The relay
is always energized and will only de-energize (release) if the as-
signed monitoring function has tripped.
NOTE
Relay 1 is configured as R (release/N.C.) and cannot be modified.
NOTE
The following screen(s) will only be displayed if the unit is equipped with the corresponding protective
function(s), the protective function is enabled, and the parameter "
Change relay allocation
" is en-
abled.