Basler Electric DGC-2020ES - Manual (Page 169)

9469200990 Rev C 161
value from 0.001 to 3, in increments of 0.001. The scale factor setting is implemented when the DGC-
2020ES senses a contact closure at a contact input programmed to activate scaling of the settings. The
value of the scale factor setting serves as a multiplier for the Gen CT Primary Amps setting. For example,
if a scale factor contact input is received by the DGC-2020ES and the scale factor setting is 2.000, the
Gen CT Primary Amps setting is doubled (2.000 x Gen CT Primary Amps).
Relay Control
The default operational setting for the Start, Run, and Pre-start relays is Predefined or standard. Any of
these relays can be logic driven by selecting the Programmable setting. Logic driven (programmable
relays must be set up using BESTlogicPlus.
The Relay Control screen is found in the BESTCOMSPlus Settings Explorer under the System
Parameters category. If using the front panel, navigate to Settings > System Parameters > Relay Control.
The BESTCOMSPlus Relay Control screen is illustrated in Figure 83.
Figure 83. Settings Explorer, System Parameters, Relay Control Screen
System Configuration Detection
When enabled, this feature allows the DGC-2020ES to automatically detect its sensing configuration in
relation to the generator. Upon starting the genset, the configuration of the generator is automatically
detected. The Single Phase Override and Low Line Override programmable function settings are then
adjusted accordingly.
There is a one-second delay in the detection to prevent the DGC-2020ES from alternating between
detected configurations. When the DGC-2020ES is in the Off mode or the engine is not running, the
Automatic Configuration Detection function is disabled. The DGC-2020ES is assumed to be in the last
valid automatically detected configuration.
It is recommended that the Single Phase Override and Low Line Override programmable functions are
not assigned to contact inputs when Automatic Configuration Detection is enabled.
Single Phase Detect Threshold
If the difference between the maximum and minimum line-to-line voltage exceeds this threshold, the unit
is determined to be in single-phase configuration. If determined to be in single-phase configuration, the
Single Phase Override programmable function forces the DGC-2020ES into single-phase mode. The
single-phase mode connection is determined by the Single Phase Detect Generator Connection, below.
If the Single Phase Override function is assigned to a contact output, the state of the contact output and
the detected configuration are ORed. This means, if one or both are true, then the system is determined
to be configured for single phase.
Low Line Detect Threshold
If the average of the valid line-to-line voltages for the detected configuration is above this threshold, the
unit is determined to be in a high-line configuration. If the average is below this threshold, it is determined
DGC-2020ES Configuration