Manual 37259C
SPM-D11 - Synchronizing Unit
Page 46/79
© Woodward
Freq. controller
ON
SPM-D11/LSXR
'ANALOG'& 'PWM'
Frequency controller
ON/OFF
ON
................The generator frequency is controlled. The generator frequency is
controlled in various manners depending on the task (no load / iso-
lated operation / synchronization). The following screens of this
function are displayed.
OFF
..............Control is not carried out and the following screens of this function
are not displayed.
Freq. controller
Isol. oper. ON
SPM-D11/LSXR
'ANALOG'& 'PWM'
Frequency controller – isolated operation
ON/OFF
The setting of this screen has no influence on the load share control.
ON
................In isolated operation the frequency controller is enabled.
OFF
..............In isolated operation the frequency controller is disabled.
Freq. controller
Ramp 00.0Hz/s
SPM-D11/LSXR
'ANALOG'& 'PWM'
Frequency controller set point ramp
0.1 to 99.9 Hz/s
A change in set point is supplied to the controller via a ramp. The slope of the ramp
is used to alter the rate at which the controller follows the set point value. The more
rapidly the set point should change, the greater this setting should be.
f control output
(max.) 000%
SPM-D11/LSXR
'ANALOG'& 'PWM'
Maximum value frequency controller
0 to 100%
Upper limit of the analog controller output.
f control output
(min.) 000%
SPM-D11/LSXR
'ANALOG'& 'PWM'
Minimum value frequency controller
0 to 100%
Lower limit of the analog controller output.
Freq. controller
Gain Kp 000
SPM-D11/LSXR
'ANALOG'& 'PWM'
P gain of the frequency controller
1 to 240
The proportional-action coefficient KP indicates the closed-loop control system
gain. By increasing the gain, the response is increased to permit larger corrections
to the variable to be controlled. The optimum setting depends on the behavior of
the system. If the gain is too low, the control action becomes slow. If the gain is
configured too high, the result is excessive overshoot/undershoot of the desired
value. Refer to "Analog Controller Outputs" on page 29.
Freq. controller
Reset Tn 00.0s
SPM-D11/LSXR
'ANALOG'& 'PWM'
Reset time frequency controller
0.0 to 60.0 s
The reset time Tn represents the I-component of the PID controller. The reset time
corrects for any offset (between set point and process variable) over time until the
process variable and the set point are the same. This parameter defines how quickly
the reset attempts to correct for any offset. If Tn is configured as 0.00 s, the I-
component of the PID loop is disabled. Refer to "Analog Controller Outputs" on
page 29.
Freq. controller
Derivat.Tv 0.00s
SPM-D11/LSXR
'ANALOG'& 'PWM'
Derivative-action time frequency controller
0.00 to 6.00 s
The derivative-action time TV represents the D-component of the PID controller.
The D-component of the controller output becomes effective with large variations
of the offset, e.g. in case of load-shedding. The lower the derivative-action time is
configured, the higher the controller reaction is. If TV is configured as 0.00 s, the
D-component of the PID loop is disabled. Refer to "Analog Controller Outputs" on
page 29.