Woodward easYgen-2000 Series User Manual page 272

Configuration
Configure Application > Configure Controller > Frequency Control
ID Parameter
5512 Derivative ratio
5550 Deadband
5551 Time pulse
minimum
272
CL Setting range Description
[Default]
2 0.01 to 100.00 The derivative ratio identifies the D part of the PID controller.
[0.01] By increasing this parameter, the stability of the system is increased. The
controller will attempt to slow down the action of the actuator in an attempt to
prevent excessive overshoot or undershoot. Essentially this is the brake for
the process.
This portion of the PID loop operates anywhere within the range of the
process unlike reset.
Notes
This parameter is only visible if frequency control (parameter
is configured to "PID analog".
The default configured controller acts like a PI controller what is the valid D
part setting for systems with secondary controllers.
1 0.02 to 9.99 Hz Isolated operation
[0.08 Hz] The generator frequency is controlled in such a manner that the measured
frequency does not deviate from the configured setpoint by more than the
value configured in this parameter without the controller issuing a frequency
raise/lower signal to the frequency control.
This prevents unneeded wear on the frequency bias output control or the
raise/lower relay contacts.
Example
n
Synchronization
The generator frequency is controlled in such a manner that the measured
frequency does not deviate from the monitored reference (mains or busbar)
frequency by more than the value configured in this parameter without the
controller issuing a frequency raise/lower signal to the frequency control.
This prevents unneeded wear on the frequency bias output control or the
raise/lower relay contacts. The value configured for this parameter must be
less than the value configured for the df max (maximum frequency differen‐
tial) for synchronization.
Notes
This parameter is only visible if frequency control (parameter
is configured to "3pos controller".
1 0.01 to 2.00 s A minimum pulse on time must be configured here.
[0.05 s] The shortest possible pulse time should be configured to limit overshoot of
the desired speed reference point.
Notes
This parameter is only visible if frequency control (parameter
is configured to "3pos controller".
easYgen-2200/2500 | Genset Control
If the frequency setpoint is 50 Hz and a deadband of 0.5 Hz is config‐
ured, the measured generator frequency must exceed 50.5 Hz (50 + 0.5)
to issue a lower pulse or fall below 49.5 Hz (50 - 0.5) to issue a raise
pulse.
5507 Ä p. 271)
5507 Ä p. 271)
5507 Ä p. 271)
37535B