Basler Electric DGC-2020HD - Manual (Page 73)

9469300990 Rev B 63
Contact Inputs
Contact inputs are available to initiate DGC-2020HD functions. The DGC-2020HD has sixteen
programmable contact sensing inputs. Additional contact inputs can be accommodated with up to four
optional CEM-2020s (Contact Expansion Module). Contact Basler Electric for availability and ordering
information.
Programmable Contact Inputs
Each programmable input (Input 1 through 16) 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 Line Override
•
Single-Phase Override
•
Single-Phase A-C Sense Override (available only when an input is configured for 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 programmable label (16 alphanumeric characters, maximum) and configured as an alarm
input, a pre-alarm input, or status only. The default names for the inputs are INPUT_x (where x = 1 to 16).
When a programmable contact input is closed, the front panel display shows the programmable label 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 Status Only is useful when a programmable input is used as
an input to programmable logic.
The programmable label is also used when alarms or pre-alarms associated with an input are recorded in
the event log.
Connections for the programmable inputs are provided at terminals 31 (Input 1) through 46 (Input 16).
The negative side of the battery voltage (terminal 49) serves as the return connection for the
programmable inputs.
Contact Input Configuration
BESTCOMSPlus Navigation Path: Settings Explorer, Programmable Inputs, Contact Inputs
Front Panel Navigation Path: Settings > Programmable Inputs > Contact Inputs
Figure 24 illustrates the BESTCOMSPlus Contact Inputs screen. Settings are listed in Table 30.
For each contact input, configure the following parameters:
1. Alarm Configuration - Select Status Only, Alarm, or Pre-Alarm. When an alarm occurs, the horn
output closes, the engine shuts down, and the alarm is displayed on the front panel. The alarm is
logged in the event log and sequence of events log. When a pre-alarm occurs, the horn output
toggles between open and closed, the pre-alarm is displayed, flashing, on the front panel, and the
engine remains running. The pre-alarm is logged in the event log and sequence of events log. If
Status Only is selected, the corresponding input is set true in BESTlogic™Plus only. The status is
available to BESTlogicPlus Programmable Logic regardless of the Alarm Configuration setting.
DGC-2020HD Contact Inputs