Operation Manual 37107F
MFR 3 - Multi Function Relay
Page 80/165
© Woodward
Power Factor Controller
Parameter
61
Pow.fact.contr.
ON
Power factor controller
ON/OFF
ON
................ The power factor is controlled independent of the load in mains pa-
rallel operations. If the measured secondary currents are lower than
5% of the rated current, the power factor cannot be accurately meas-
ured. In order to prevent power factor swings, the controller automat-
ically locks the power factor at a set value.The subsequent screens of
this function are displayed.
OFF
.............. Power factor control is disabled, and the subsequent screens of this
function are not displayed.
Parameter
62
Pow.fact.contr.
setpoint 0.00
Power factor controller: internal set point value
i0.70 to 1.00 to c0.70
When operating in mains parallel, the control regulates the re-active power in a
manner that results in the generator producing power at the power factor confi-
gured here. The designation "i" equals inductive (generator overexcited/leading)
and "c" capacitive (generator underexcited/lagging) re-active power. This set point
is enabled only in mains parallel operation.
NOTE
Please note the configured settings for the voltage controller (refer to Voltage Controller on page 77).
The settings for the voltage controller also affect the power factor controller.
External Power Factor Set Point Value
Parameter
63
Power factor
external ON
Power factor set point: external set point value
ON/OFF
ON
................ The power factor set point 2 value may be enabled via an external
signal. The subsequent screens of this function are displayed. This set
point 2 is enabled when terminal 5" ("Setpoint 1
↔
2) is energized.
OFF
.............. If this function is configured as "OFF", the control unit utilizes set
point 1 only. The external set point value specification cannot be car-
ried out via the 0 to 20 mA input. The subsequent screens of this
function are not displayed.
Parameter
64
Analog input
0-00mA
Power factor set point: range
0 to 20 / 4 to 20 mA
A 0 to 20 mA or 4 to 20 mA analog input for the power factor controller is selected
here, depending on the type of input used.
0
to 20 mA
... Minimum value of the setpoint is 0 mA; maximum value is 20 mA.
4 to 20 mA
... Minimum value of the setpoint is 4 mA; maximum value is 20 mA.
Parameter
65
Ext. Pow.Factor
0mA 0.00
Power factor set point: minimum value
i0.70 to 1.00 to c0.70
The minimum value of the power factor is defined here (e.g. i0.95).
Parameter
66
Ext. Pow.Factor
20mA 0.00
Power factor set point: maximum value
i0.70 to 1.00 to c0.70
The maximum value of the power factor is defined here (e.g. c0.95).