Winco DGC-2020 - Manual (Page 39)

9400200990 Rev B DGC-2020 Functional Description 3-3
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 separate I/O modules. 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.
• Automatic Transfer Switch
• Battery Charger Fail
• Battle
Override
• Fuel Leak Detection
• Grounded Delta Override
• Low
Coolant Level
• Low-Line
Override
• Single-Phase A-C Override
• Single-Phase
Override
The programmable inputs accept normally open, Form A 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 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 is programmed, no indication is given. Programming an input
as neither is useful when a programmable input is used as an input to programmable logic.
Connections for the programmable inputs are provided at terminals 15 (Input 16) through 30 (Input 1).
The negative side of the battery voltage (terminal 2) serves as the return connection for the
programmable inputs.