Basler Electric DGC-2020HD - Manual (Page 65)

9469300990 Rev B 55
Engine Sender Inputs
The DGC-2020HD has sender inputs dedicated to monitoring the engine fuel level, oil pressure, and
coolant temperature. These inputs are programmable to give the user flexibility in selecting the sender to
be used in an application. Information about programming sender inputs is provided later in this chapter.
Connections
Fuel Level sender connections are made at terminals 71 and 72. Oil pressure sender connections are
made at terminals 74 and 75. Coolant Temperature sender connections are made at terminals 77 and 78.
Compatibility
The resistance ranges of the following senders are compatible with the DGC-2020HD. A compatible Fuel
Level sender is the Isspro model R8925. Oil pressure senders compatible with the DGC-2020HD include
Datcon model 02505-00, Isspro model R8919, Stewart-Warner models 279BF, 279C, 411K and 411M,
and VDO models 360025 and 360811. Compatible Coolant Temperature senders include Datcon model
02019-00, Faria model TS4042, Isspro model, R8959, and Stewart-Warner model 334P. Other senders
with matching resistance ranges may also be used.
Operation
A current is provided to each sender. The developed voltage is measured and scaled for use by the
internal circuitry. An open circuit or short circuit across the sender terminals will cause the DGC-2020HD
to indicate a failed sender.
Programmability
BESTCOMSPlus ® software allows for the programming of sender characteristics. See Sender
Characteristic Curves, below, for more information.
Characteristic Curves
The sender inputs of the DGC-2020HD can be customized to obtain maximum accuracy from the coolant
temperature, oil pressure, and fuel level senders.
The characteristic curve of each sender input can be configured with up to 11 points. Each point can be
assigned a resistance input value and a corresponding temperature (coolant temperature sender),
pressure (oil pressure sender), or percentage (fuel level sender) value. A slope setting automatically
orders the values in the resistance column according to whether the sender requires a negative or
positive slope. Sender curve points are automatically plotted on a curve in BESTCOMSPlus, which can
be printed.
Sender curve points configured in BESTCOMSPlus can be saved in the configuration file. The data for all
three senders is automatically saved with the DGC-2020HD configuration file.
Any changes made in BESTCOMSPlus to the sender points can be reverted to the factory-default values.
A new settings file can also be created.
Curve Configuration
If the DGC-2020HD receives engine information from an engine ECU, the programmable sender
parameters for coolant temperature and oil pressure do not require configuration because they have no
effect. Configuration of sender parameters is necessary for resistive senders only.
DGC-2020HD Engine Sender Inputs