Basler Electric DGC-2020 - Manual (Page 351)

d. From the Communication pull-down menu, select Upload Logic to load the logic into the
DGC-2020 if connected, or save the settings to a file if working off line.
Figure 7-66. Settings Explorer, BESTlogicPlus Programmable Logic
5. Set the parameters for detecting stable and failed bus and generator under SETTINGS EXPLORER >
BREAKER MANAGEMENT > BUS CONDITION DETECTION.
a. Generator Sensing. See Figure 7-67.
Front Panel Navigation Path: SETTINGS > BREAKER MANAGEMENT > BUS CONDITION
DETECT
i. Dead Bus Voltage Threshold and Activation Delay. When the voltage of either the
generator or bus is below this threshold for the duration equal the activation delay,
the generator or bus is deemed “Dead”.
ii. Gen Stable Over and Under Voltage Thresholds and Over and Under Frequency
Thresholds and the Bus Stable and Bus Failed Activation Delay. When the generator
voltage and frequencies are within the specified ranges for the duration equal to the
Bus Stable Activation Delay, the generator is deemed “Stable”. Otherwise it is
deemed “Failed”.
b. Bus Sensing. See Figure 7-67.
i. Bus Stable Over and Under Voltage Thresholds and Over and Under Frequency
Thresholds. When the bus input voltage and frequencies are within the specified
ranges for the duration equal to the Bus Stable Activation Delay, the bus input is
deemed “Stable”. Otherwise, it is deemed “Failed”.
6. Place the unit in AUTO. The unit is now configured for mains fail transfer operation. It can be tested
by removing the input to the bus input terminals, or temporarily modifying the bus condition parameter
for the bus input to indicate the bus input has failed. After the mains fail transfer delay has expired,
the mains breaker opens, the generator starts, and the gen breaker closes. When the bus is reapplied
or the bus condition parameters are re-adjusted to indicate a stable bus input, after the mains fail
return delay has expired, the unit opens the generator breaker, closes the mains breaker, cools down,
and stops.
9400200990 Rev X DGC-2020 Setup 7-63