Basler Electric DGC-2020 - Manual (Page 151)

•
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 generation of
an alarm or pre-alarm when the input is configured as an alarm or pre-alarm. The status of the input is
available immediately for BESTlogicPlus and on the Contact Inputs status screen on the front panel or in
BESTCOMSPlus. 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.
The contact inputs are incorporated into a BESTlogicPlus programmable logic scheme by selecting them
from the I/O group in BESTlogicPlus. For more details, refer to Section 5, BESTlogicPlus Programmable
Logic.
Contact input status is available in BESTlogicPlus Programmable Logic when “None” is selected for
Alarm Configuration.
The BESTCOMSPlus Contact Inputs screen is illustrated in Figure 4-34.
Figure 4-34. Contact Inputs
A Alarm Configuration: None, Alarm, or Pre-Alarm.
B Activation Delay: Adjustable from 0 to 300 s in 1 s increments.
C Label Text: An alphanumeric character string with a maximum of 16 characters.
D Contact Recognition: Always or While Engine Running Only.
Programmable Functions
Any of the 16 contact inputs can be programmed to recognize any one of nine function types:
•
Automatic Transfer Switch (ATS) A - Disconnect from the mains and start the generator.
•
Grounded Delta Override B - Uses Grounded Delta sensing if the generator connection is set for
Delta.
•
Battle Override C - The alarms programmed to shut down the unit will be overridden and ignored.
•
Low-Line Override D - The 51, 27, and 59 settings are scaled by the low-line scale factor setting.
•
Single-Phase Override E - The unit switches to single phase sensing configuration and uses the 1
Phase Override Sensing setting F (A-B or A-C). (Note: Applies only when the Single-Phase
Override (A-C) input is not invoked.)
9400200990 Rev X DGC-2020 BESTCOMSPlus
® Software
4-41