Basler Electric DGC-2020 - Manual (Page 77)

terminals will cause the DGC-2020 to indicate a failed sender. Coolant temperature senders that are
compatible with the DGC-2020 include Datcon model 02019-00, Faria model TS4042, Isspro model
R8959, and Stewart-Warner model 334P. Other senders may be used. BESTCOMSPlus
® software allows
for the programming of sender characteristics. See Section 4, BESTCOMSPlus
® Software, for more
information.
Coolant temperature sender connections are made at terminals 10 and 11 (sender common).
Fuel Level
A current is provided to the fuel level sender. The developed voltage is measured and scaled for use by
the internal circuitry. An open circuit or short circuit across the fuel level sender terminals will cause the
DGC-2020 to indicate a failed sender. Fuel level senders that are compatible with the DGC-2020 include
Isspro model R8925. Other senders may be used. BESTCOMSPlus
® software allows for the
programming of sender characteristics. See Section 4, BESTCOMSPlus
® Software, for more information.
Fuel level sender connections are made at terminals 9 and 11 (sender common).
Speed Signal Inputs
The DGC-2020 uses signals from the generator voltage sensing inputs and magnetic pickup input to
detect machine speed.
Generator Voltage Sensing Input
The generator voltage sensed by the DGC-2020 is used to measure frequency and can be used to
measure machine speed.
Sensing voltage is applied to terminals 41 (A-phase), 39 (B-phase), 37 (C-phase), and 35 (Neutral).
Magnetic Pickup Input (MPU)
Voltage supplied by a magnetic pickup is scaled and conditioned for use by the internal circuitry as a
speed signal source. The MPU input accepts a signal over the range of 3 to 35 volts peak and 32 to
10,000 hertz.
Magnetic pickup connections are provided at terminals 31 (+) and 32 (–).
Contact Inputs
The DGC-2020 has seventeen contact sensing inputs: an emergency stop input and 16 programmable
inputs. Additional contact inputs can be accommodated with a CEM-2020 (Contact Expansion Module).
Contact Basler Electric for availability and ordering information.
Emergency Stop Input
This input accepts Form B, dry contacts. An open circuit at this continuously monitored input initiates an
emergency stop. An emergency stop removes operating power from the DGC-2020 Pre-Start, Run, and
Fuel output relays.
Emergency stop contact connections are made at terminals 46 and 47.
Programmable Inputs
Each programmable input (Input 1 through Input 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
•
Fuel Leak Detect
•
Grounded Delta Override
•
Low Coolant Level
•
Low Line Override
•
Single-Phase A-C 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 neither. The default names for the inputs are INPUT_x (where x = 1 to 16). When a
9400200990 Rev X DGC-2020 Functional Description 3-3