If kvar (Q) control is not used in the easYgen but the LogicsManager ”12941 Q-Control“ is
TRUE in mains parallel operation, under some circumstances the message ”Gen
excitation lim.“ could be shown. This has no impact on the kvar regulation but it can be
prevented if
• ”12941 Q-Control“ is set always to FALSE or
•
• the kvar setpoint is adapted accordingly.
•
4.4.4.2.2
Configure Power Factor / kvar Control
ID
Parameter
CL
Setting range
[Default]
Description
5625
Power factor control
2
[PID analog]
The power factor is controlled
using an analog PID controller.
3pos controller
The power factor is controlled
using a three-step controller.
Off
Power factor control is not carried
out.
5613
Proportional gain
2
0.01 to 100.00
[1.00]
The proportional coefficient
specifies the gain. By increasing
the gain, the response is
increased to permit larger
corrections to the variable to be
controlled.
The farther out of tolerance the
process is the larger the response
action is to return the process to
the tolerance band.
Notes
If the gain is configured too high,
the result is excessive overshoot/
undershoot of the desired value.
This parameter is only visible if
power factor control
(parameter
configured to "PID analog".
5614
Integral gain
2
0.001 to 100.000
[1.000]
The integral gain identifies the I
part of the PID controller. The
integral gain corrects for any
offset (between setpoint and
process variable) automatically
over time by shifting the
proportioning band.
Reset automatically changes the
output requirements until the
process variable and the setpoint
are the same. This parameter
permits the user to adjust how
quickly the reset attempts to
correct for any offset. The integral
gain constant must be greater
than the derivative time constant.
If the integral gain constant is too
large, the engine will continually
oscillate. If the integral gain
constant is too small, the engine
305
easYgen-3000XT Series
B37574
4 Configuration
4.4.4.2.2 Configure Power Factor / kvar Control
Released