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Operation Manual 37107F
MFR 3 - Multi Function Relay
© Woodward
Page 73/165
Controller
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CAUTION
Entering incorrect values can lead to the control unit failing to function properly and destroy the gene-
rator!
Parameter
34
Configure
Controller YES
Configure controllers
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.
Constant and Interchange Real Power Controller
These screens appear only if the real power controller (see chapter "Real Power Controller" on page 82) is confi-
gured to "ON".
NOTE
The fixed-value power controller does not monitor the mains interchange point. If excess power for the
load requirements is generated, the excess power is exported to the mains. If insufficient power for the
load requirements is generated, remaining power required is imported from the mains.
Parameter
35
Power controller
Pset1 I0000kW
P controller: setpoint value 1
C/I/E 0 to 16,000 kW
Setpoint 1 is enabled when the discrete input "Setpoint 1
↔
2" is de-energized (no
voltage applied to terminal 5). The mains interchange (import/export) real power is
then controlled to the set point 1 value.
Generator real power control
C
................... The letter C stands for constant power set point (= base load). The
generator shall always supply the value entered for the constant pow-
er level. All load swings are absorbed by the utility. The generator
will always start when a constant power (base load) operation is
enabled.
Mains interchange (import/export) real power control
I
.................... The letter I stands for import power (power supplied by the mains).
The value entered for the import level shall always be supplied by the
utility. All load swings are absorbed by the generator(s) provided the
load rating for the generator(s) is not exceeded. The generator will
start when the power imported from the utility exceeds the level con-
figured in this parameter.
E
................... The letter E stands for export power (power supplied to the mains).
The value entered for the export level shall always be supplied to the
utility. All load swings are absorbed by the generator(s) provided the
load rating for the generator(s) is not exceeded. The generator will
always start when an export power operation is enabled.