Manual 02007
DSLC Digital Synchronizer and Load Control
Woodward
49
10. If generator voltage drops to a value less than the bus voltage, increase the
Voltage Window set point or increase the Voltage Ramp Time set point on
Menu 4 for a slower rate of change in voltage so that cycling through the
window does not occur.
11. Set the synchronizer mode switch to Off. Manually lower the generator
voltage until generator Phase A voltage is approximately 5% lower than Bus
Voltage.
12. Set the synchronizer mode switch to Check. The DSLC control should
increase the Voltage Bias to the voltage regulator to raise the generator
voltage. The Voltage Bias should stop changing when Phase A voltage
reaches the Bus Voltage.
13. If generator voltage increases to a value greater than the bus voltage and
the voltage window, increase the Voltage Window set point or increase the
Voltage Ramp Time set point on Menu 4 for a slower rate of change in
voltage so that cycling through the window does not occur.
14. Continue with Final Voltage Matching Setup.
Final Voltage Matching Setup
1. Set the Voltage Low Limit and Voltage High Limit set points on Menu 4 to
the desired values. Voltage adjustments by the Synchronizer and VAR/PF
Control will not adjust voltage beyond these limits.
2. If the High Voltage Alarm or the Low Voltage Alarm are desired when
generator voltage exceeds the above specified limit values, set the alarm
set points to Enabled.
3. If generator voltage exceeds the Voltage High Limit and Voltage Low Limit
range and it is desired to operate the High Limit and Low Limit relay driver
outputs, set the Voltage Switches set point to Enabled.
4. If the Voltage Bias Output reaches either end of its operating range,
indicating its range of control has been exceeded, and it is desired to
activate an alarm, set the Voltage Range Alarm set point to Enabled.
5. When synchronizer voltage matching performance is satisfactory, press the
“SAVE” key on the Hand Held Programmer to store the settings.
This completes adjustments of the synchronizer voltage matching function.
Load Control Adjustment
This section contains the instructions for setup of the DSLC Load Control. Set all
Load Control, Menu 2, set points according to the descriptions above and the
work sheet. Menu 8 set points for load control mode, load reference, and system
load are provided to assist in setup and verification of correct operation.
Preliminary Setup
Do the following steps prior to activating the generator and load control.