Winco DGC-2020 - Manual (Page 98)

Bus Transformer Settings
Primary and secondary bus transformer ratings are used by the automatic transfer switch function, which
monitors a single-phase bus input to detect mains failure. Controllers equipped with an automatic
synchronizer (style number xxxxxxxAx) also use the primary and secondary bus transformer ratings. The
primary setting
D establishes the nominal voltage present at phases A and C of the bus. The secondary
setting E establishes the nominal voltage seen at the bus voltage input of the DGC-2020.
BESTCOMSPlus sensing transformer settings (DGC-2020, System Parameters, Sensing Transformers)
are illustrated in Figure 4-25.
Figure 4-25. Sensing Transformers Parameters
A Gen PT Primary Volts: Adjustable from 1 to 9999 Vac in 1 Vac increments.
B Gen PT Secondary Volts: Adjustable from 1 to 480 Vac in 1 Vac increments.
C Gen CT Primary Amps: Adjustable from 1 to 5,000 Aac in 1 Aac increments.
D Bus PT Primary Volts: Adjustable from 1 to 9999 Vac in 1 Vac increments.
E Bus PT Secondary Volts: Adjustable from 1 to 480 Vac in 1 Vac increments.
PROGRAMMABLE INPUTS
DGC-2020 programmable inputs can be assigned to trigger various functions and, when triggered,
annunciate an alarm or pre-alarm. A user-assigned label can be assigned to each input to make
identification easier. The description of these settings is organized as follows:
 Contact
Inputs
 Programmable Functions
 Remote LSM Inputs (Available with an optional LSM-2020 (Load Share Module).
 Remote Contact Inputs (Available with an optional CEM-2020 (Contact Expansion Module).
 Remote Analog Inputs (Available with an optional AEM-2020 (Analog Expansion Module).
 Remote RTD Inputs (Available with an optional AEM-2020 (Analog Expansion Module).
 Remote Thermocouple Inputs (Available with an optional AEM-2020 (Analog Expansion Module).
Contact Inputs
Each of the 16 contact inputs can be independently configured to annunciate an alarm or pre-alarm
A
when the input senses a contact closure. A user-adjustable time delay B can be set to delay recognition of
a contact input. By default, all inputs are configured so that they do not trigger an alarm or pre-alarm.
To make identifying the contact inputs easier, a user-assigned name
C can be given to each input.
Contacts can be recognized D always or while the engine is running only.
Contact input status is available in BESTlogic+ Programmable Logic when “None” is selected for Alarm
Configuration.
BESTCOMSPlus settings for contact inputs (DGC-2020, Programmable Inputs, Contact Inputs) are
illustrated in Figure 4-26.
4-28 DGC-2020 BESTCOMSPlus Software 9400200990 Rev K