Manual 37615C
SPM-D2-10 - Synchronizing Unit
© Woodward
Page 43/68
Frequency Controller
The following screens are not found on the SPM-D2-10, SPM-D2-10/
N
. They utilize a three-position controller to
regulate the frequency. The SPM-D2-10/
X
& SPM-D2-10/
XN
have the option to utilize multiple methods of fre-
quency control. The following screens show the available methods of frequency regulation. The SPM-D2-10/
X
&
SPM-D2-10/
XN
will only display the screens related to the frequency controller type that is configured.
Parameter 6670
f control type
xxxxxxx
X
&
XN
Packages only
Frequency controller type
THREESTEP/ANALOG/PWM
THREESTEP
The frequency controller operates as a three-position controller and
outputs raise (f+) and lower pulses (f-) via the corresponding relays.
The frequency and voltage controller cannot output signals at the same
time.
ANALOG
.... The frequency controller operates as a continuous controller with an
analog signal output (mA or V).
PWM
........... The frequency controller operates as a continuous controller with a
pulse-width-modulated output signal and constant level.
Note
: Only the screens, which pertain to the selected output signal type, will be dis-
played.
Three-position controller (Standard;
X
&
XN
Packages: Setting 'THREESTEP')
Parameter 5507
Freq. controller
ON
X
&
XN
Packages:
with 'THREESTEP' setting
Frequency controller
ON/OFF
ON
................ The generator frequency is controlled by the SPM-D2. The generator
frequency is controlled in various manners depending on the task (no
load / isolated operation / synchronization). The subsequent screens of
this function are displayed.
OFF
.............. The frequency control is not performed by the SPM-D2, and the sub-
sequent screens of this function are not displayed.
Parameter 6655
Freq. controller
Isol. oper. ON
X
&
XN
Packages:
with 'THREESTEP' setting
Isolated operation frequency controller
ON/OFF
ON
................ In isolated operation the frequency controller is enabled.
OFF
.............. In isolated operation the frequency controller is disabled.
Parameter 5503
Freq. Controller
Ramp..=.00.0Hz/s
X
&
XN
Packages:
with 'THREESTEP' setting
Frequency controller set point ramp
0.1 to 99.9 Hz/s
The controller increases the frequency from an initial set point to the configured fre-
quency via a ramp. The slope of the ramp is used to determine how quickly the con-
troller changes the frequency. The larger the value configured here, the more rapid
the change in frequency.
Parameter 5550
Freq. controller
Dead band 0.00Hz
X
&
XN
Packages:
only with 'THREESTEP' setting
Frequency controller dead band
0.02 to 1.00 Hz
No load/Isolated operation:
The generator frequency is controlled in such a manner
that when in a steady state the actual frequency does not deviate from
the configured generator rated frequency by more than the value con-
figured in this screen.
Synchronization:
The generator frequency is controlled in such a manner that when
in a steady state the differential frequency does not deviate from the
frequency set point by more than the value configured in this screen.
The mains or busbar frequency is used as the set point value.
