REPROGRAMMING OR VERIFYING GSC SETPOINTS - Continued
RANGE OF VALUES
P301 Synchronization Enable:
Enables or disables synchronization
function and specifies Load Share
control being driven.
P302 Breaker Coil Time Limit:
0.2 to 5.0 seconds in
Maximum amount of time breaker coil
increments of 0.1 seconds
can be energized without damaging coil.
P303 Voltage Limit Enable: Enables or
during automatic synchronization.
P304 Voltage Limit: Maximum
1% to 15% in increments of
acceptable difference between bus
voltage and oncoming voltage,
expressed as a percentage of bus
P305 Phase Tolerance Limit:
1 to 25 degrees in
increments of 1 degree
allowed for breaker closure. 2
P306 Dwell Time: Time during which
0.1 to 1.0 seconds in
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
% varies typical
how fast engine speed will change
increments of 0.1%
during synchronization. 2 3
P305, P306, P307, P308, and P309 can be adjusted to precisely match individual engine response and
breaker closure characteristics using OP11-Synchronization Setpoint Turning.
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.