Basler Electric DGC-2020ES - Manual (Page 47)

9469200990 Rev C 39
Contact Inputs
Contact inputs are available to initiate DGC-2020ES actions. The DGC-2020ES has seven programmable
contact sensing inputs. Additional contact inputs can be accommodated with an optional CEM-2020
(Contact Expansion Module). Contact Basler Electric for availability and ordering information.
Programmable
Each programmable input (Input 1 through Input 7) can be independently configured to perform the
following functions. By default, each programmable input is disabled.
•
Auto Transfer Switch
•
Battery Charger Fail
•
Battle Override
•
Emergency Stop
•
Fuel Leak Detect
•
Grounded Delta Override
•
Low Coolant Level
•
Low Fuel Level
•
Low Line Override
•
Single-Phase Override
The programmable inputs accept dry contacts. A contact is connected between a programmable input
and the negative side of the battery. Through BESTCOMSPlus
® , each programmable contact input can be
assigned a name (16 alphanumeric characters, maximum) and configured as an alarm input, a pre-alarm
input, or none. The default names for the inputs are INPUT_x (where x = 1 to 7). When a programmable
contact input is closed, the front panel display shows the name of the closed input if it was programmed
as an alarm or pre-alarm input. Alarm inputs are annunciated through the Normal display mode screens
of the front panel. Pre-alarm inputs are annunciated through the pre-alarm metering screen of the front
panel. If neither alarm nor pre-alarm is programmed, no indication is given. Programming an input as
None is useful when a programmable input is used as an input to programmable logic.
Connections for the programmable inputs are provided at terminals 3 (Input 1) through 9 (Input 7). The
negative side of the battery voltage (terminal 17) serves as the return connection for the programmable
inputs.
Contact Input Configuration
Figure 12 illustrates the Contact Inputs screen found in the BESTCOMSPlus Settings Explorer under the
Programmable Inputs category. If using the front panel, navigate to Settings > Programmable Inputs >
Configurable Inputs.
For each contact input, configure the following parameters:
1. Alarm Configuration - Select None, Alarm, or Pre-Alarm. When an alarm occurs, the horn output
closes and the engine shuts down. When a pre-alarm occurs, the horn output toggles between open
and closed while the engine remains running. If None is selected, the input is status only. The status
is available to BESTlogic
™Plus Programmable Logic regardless of Alarm Configuration setting.
2. Activation Delay - This parameter defines the duration that the input remains on before any
annunciation occurs.
3. Label Text - Enter descriptive text that signifies the use of the input. This text appears next to the
input in BESTlogic
™Plus Programmable Logic and in the event log if the input is configured as an
alarm or pre-alarm.
4. Contact Recognition - Select whether the contact input should be recognized always, or only while
the engine is running. For example, a switch closes when oil pressure is low. Such a switch would be
closed when the engine is not running but a low oil pressure alarm or pre-alarm should not be
DGC-2020ES Contact Inputs