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Operation Manual 37107F
MFR 3 - Multi Function Relay
Page 88/165
© Woodward
Breaker
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Parameter
93
Configure
Breaker YES
Configure breakers
YES/NO
Various groups of parameters are grouped together in blocks to aid in the rapid na-
vigation through the large number of configuration screens. Selecting "YES" or
"NO" does not determine if control or monitoring is performed. The user’s selec-
tion has the following effect:
YES
.............. The configuration screens in this block are displayed and can either
be viewed ("Select" push button) or modifications can be made to the
parameters ("Cursor
→
", "Digit
↑
" or "Select" push buttons). This
does not disable or enable individual parameters, only if the individ-
ual parameters in this parameter block may be accessed for modifica-
tions.
NO
................ The parameters in this block are not displayed, cannot be modified
and are therefore skipped.
Breaker Logic
Parameter
94
Breaker logic:
----------------
Breaker logic
see below
The unit automatically controls the two breakers (MCB and GCB). Up to five (5)
breaker logic modes may be selected from. These are: EXTERNAL and
PARALLEL for MFR-31 & MFR-32, and OPEN TRANSIT, CLOSED TRANSIT,
and INTERCHANGE for MFR-32.
NOTE
For a dead bus start it is necessary to enable the dead bus start function. To trigger the watchdogs
"generator underfrequency" as well as "generator undervoltage", terminal 6 (enable monitoring) must
be energized. It is possible to switch the breaker logic by energizing and de-energizing discrete input
[D03] (terminal 64). The second breaker logic may be configured during the configuration of the dis-
crete inputs. When discrete input [D03] is energized, the second breaker logic is enabled.