5-14 DGC-2020 BESTlogic+ Programmable 9400200990 Rev I
Refer to Figure 5-2, Pickup and Dropout Logic Timer Blocks.
To program logic timer settings, use the Settings Explorer within BESTCOMSPlus to open the
BESTlogic+ Programmable Logic/Logic Timers tree branch. Enter a Name label that you want to appear
on the timer logic block. The Time Delay value range is 0.0 to 1800.0 seconds in 0.1-second increments.
Next, open the Components tab inside the BESTlogic+ window and drag a timer onto the program grid.
Right click on the timer to select the timer you want to use that was previously set on the Logic Timers
tree branch. The Logic Timer Properties Dialog Box will appear. Select the timer you want to use.
Timing accuracy is ±15 milliseconds.
Initiate
Pickup Time
Output
Initiate
Dropout Time
Output
Pickup
Timer
Dropout
Timer
Output
Output
Initiate
Initiate
P0048-03
Figure 5-2. Pickup and Dropout Timer Logic Blocks
Logic Comment Block
The logic comment block is used for informational purposes only. First, the Logic Comment Block is
placed on the program grid. Then, informative text is entered by double clicking on the block. See Figure
5-3.
Figure 5-3. Logic Comment Block
Elements
Protective Elements
27TRIP, 59TRIP, 81 TRIP, 47TRIP (optional), 51TRIP (optional), 32TRIP, and 40TRIP are used to
connect the TRIP output to another logic block input.
Control Elements
AUTOMODE is used to switch the DGC-2020 to AUTO mode.
AVR is used to raise and lower the AVR setpoint.
GENBRK is used to control the generator breaker. Connect the inputs and outputs of the GENBRK logic
block to inputs and outputs of other logic blocks.
GOVR is used to raise and lower the Governor.
MAINSBRK is used to control the mains breaker. Connect the inputs and outputs of the MAINSBRK logic
block to inputs and outputs of other logic blocks.
OFFMODE is used to switch the DGC-2020 to OFF mode.
PARTOMAINS makes the generator regulate at the base load level setting when the generator is
paralleled to the mains.
RUNMODE is used to switch the DGC-2020 to RUN mode.
RUNWLOAD is used to start/stop the generator and close/open the Gen breaker.
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