TM 9-6115-729-24
0085
REPROGRAMMING OR VERIFYING GSC SETPOINTS - Continued
FACTORY
DESCRIPTION
RANGE OF VALUES
SETPOINTS
DEFAULT
P301 Synchronization Enable:
0 disabled
0
1
Enables or disables synchronization
1 Woodward
function and specifies Load Share
control being driven.
P302 Breaker Coil Time Limit:
0.2 to 5.0 seconds in
1.0 sec
1
Maximum amount of time breaker coil
increments of 0.1 seconds
can be energized without damaging coil.
P303 Voltage Limit Enable: Enables or
0 disabled
1
1
disables generator-bus voltage checking
1 enabled
during automatic synchronization.
P304 Voltage Limit: Maximum
1% to 15% in increments of
1%
4%
acceptable difference between bus
1%
voltage and oncoming voltage,
expressed as a percentage of bus
voltage.
P305 Phase Tolerance Limit:
1 to 25 degrees in
5 deg
5 deg
Maximum phase angle magnitude
increments of 1 degree
allowed for breaker closure. 2
P306 Dwell Time: Time during which
0.1 to 1.0 seconds in
0.5 sec
0.5 sec
the phase angle between generator and
increments of 0.1 second
bus must be within Phase Tolerance
Limit for breaker closure. 2
P307 Speed Control Gain: Controls
0.0% to 100.0% in
50.0%
% varies typical
how fast engine speed will change
increments of 0.1%
12%
during synchronization. 2 3
____________
2
P305, P306, P307, P308, and P309 can be adjusted to precisely match individual engine response and
breaker closure characteristics using OP11-Synchronization Setpoint Turning.
3
GSC used P-1-D (proportional-integral-derivation) control to accomplish synchronization quickly and
smoothly. The P, 1, and D parameters are independently controlled by setpoints P307, P308, and P309,
respectively. Adjusting any one of these setpoints will not affect the other two settings.
