Manual 37259C
SPM-D11 - Synchronizing Unit
Page 54/79
© Woodward
Three-Position Controller (SPM-D11/LSR and SPM-D11/LSXR, Setting 'THREE-STEP')
Power controller
Dead band= 00.0%
only SPM-D11/LSR
and SPM-D11/LSXR
'THREE-STEP'
Real power controller insensitivity
0.1 to 25.0 %
In mains/parallel operation the real power will be controlled so that it does not de-
viate from the configured power factor set point by more than the value configured
in this dead band (%) setting while operating in a steady state. This percentage is
based on the generator nominal power.
Power controller
Gain Kp 00.0
only SPM-D11/LSR
and SPM-D11/LSXR
'THREE-STEP'
Gain of real load controller
0.1 to 99.9
Power controller
Sens.red. *0.0
only SPM-D11/LSR
and SPM-D11/LSXR
'THREE-STEP'
Sensitivity reduction of real power controller
1.0 to 9.9
If the controller does not issue an actuating pulse at least 5 seconds after reaching
steady state condition, the sensitivity will be reduced by the entered factor.
Example: In case of a dead band of 2.5 % and a factor 2.0 the dead band will be increased to 5.0 % after
5 seconds. If the system deviation afterwards exceeds 5.0 %, the original dead band (2.5 %) of the con-
troller will be set automatically. Using this entry, frequent unnecessary actuation processes can be
avoided, thus extending the life of the actuating device.
Analog controller (SPM-D11/LSXR, Setting 'ANALOG' & 'PWM')
Power controller
Gain Kp 000
SPM-D11/LSXR
'ANALOG' & 'PWM'
P gain of the real power 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.
Power controller
Reset Tn 00.0s
SPM-D11/LSXR
'ANALOG' & 'PWM'
Reset time of the active load 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.
Power controller
Derivat.Tv 0.00s
SPM-D11/LSXR
'ANALOG' & 'PWM'
Derivative action time of the active load 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.