CG Drives & Automation 01-7318-01r1 Functional description 135
Minimum Allowed Displacement Power
Factor in Q(U) mode [G24A]
Minimum allowed displacement power factor in Q(U)
mode at AFR/AFG connection terminals. It limits the
Q-reference in order to not allow the displacement power
factor to go below the value specified in this menu.
Lock-In Active Power Level [G24B]
Q(U) mode is turned on if the actual active power of AFR/
AFG is higher than the value set in this menu.
Lock-Out Active Power Level [G24C]
Q(U) mode is turned off if the actual active power of AFR/
AFG is lower than the value set in this menu.
CosΦ control as a function of grid
voltage CosΦ(U) [G25]
AFR/AFG can support grid/network voltage in the event of
grid/network voltage variations by providing or consuming
the reactive power. For that, displacement power factor
(CosΦ) at the terminals of AFR/AFG can be configured as a
function of grid/network measured voltage. Characteristics
of displacement power factor (CosΦ) as a function of
measured grid/network voltage can be configured using four
configurable points. For details read section Reactive power
(Q) support, section 7.17.2, page 41. In this menu, settings
related CosΦ -U characteristic curve can be configured.
Displacement power factor (CosΦ1) At
Voltage level (U1) [G251]
Desired displacement power factor (CosΦ1) at measured
grid/network voltage (U1) level.
Grid/Network Voltage (U1) level [G252]
Grid/Network voltage (U1) level at which specified CosΦ1
is maintained.
Displacement power factor (CosΦ2) At
Voltage level (U2) [G253]
Desired displacement power factor (CosΦ2) at measured
grid/network voltage (U2) level.
Default: 0.01
Range: 0.01s - 1.00s
Default: 10%
Range:
0 = Off
1% - 100%
Default: 0%
Range: 0% - 100%
NOTE:
Setting 0 (off) in [G24B] turns off the lock-in and lock out
function for Q (U).
NOTE:
Hysteresis between lock-in and lock-out is available only
if lock-in is higher than the lock-out value. In that cases,
the difference between lock-in and lock-out acts as a
hysteresis.
Default: 0.90
Range: -1.00 - 1.00
NOTE:
-ve CosΦ1 value in [G251] indicates the under excited
(Q-absorbed) mode and +ve sign indicates the over-
excited (Q-delivered) mode.
Default: 85%
Range: 0%- 120%
Default: 0.95
Range: -1.00 - 1.00
NOTE:
-ve Cos
Φ2 value in [G253] indicates the under excited
(Q-absorbed) mode and +ve sign indicates the over-
excited (Q-delivered) mode.
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