Table 2-1. Front Panel HMI Descriptions
Call-
Out
Description
A Liquid Crystal Display. The backlit, two line by 16 character LCD is the primary interface for
metering, alarms, pre-alarms, and protective functions. The LCD has three standard display
modes (Normal, Alternate, and Menu) and one optional display mode (ECU Parameters). In
Normal mode, the displayed parameters correspond to one of the eight labels surrounding the
LCD. In Alternate mode, the LCD displays parameters and the corresponding labels. In Menu
mode, the LCD scrolls through the DGC-500 setup parameters. In the optional ECU
Parameters mode, the LCD scrolls through genset parameters (metered from the ECU) and
engine configuration parameters.
B Not in Auto Indicator. This red LED lights when the DGC-500 is not operating in Auto mode.
C Phase Toggle Pushbutton. Pressing this control scrolls through the parameters available in
Normal display mode.
D Alarm Indicator. This red LED lights continuously during alarm conditions and flashes during
pre-alarm conditions.
E Alarm Silence Pushbutton. Pressing this control resets the DGC-500 audible alarm.
F Supplying Load Indicator. This green LED lights when the generator is supplying more than
two percent of rated current.
G Lamp Test Pushbutton. Pressing this control tests the DGC-500 indicators by exercising all
LCD segments and lighting all LEDS.
H Auto Mode Indicator. This green LED lights when the DGC-500 is operating in Auto mode.
I Auto Pushbutton. Pressing this control places the DGC-500 in Auto mode.
J Off Mode Indicator. This red LED lights when the DGC-500 is in Off mode.
K Off Pushbutton. Pressing this control places the DGC-500 in Off mode.
L Run Mode Indicator. This green LED lights when the DGC-500 is operating in Run mode.
M Run Pushbutton. Pressing this control places the DGC-500 in Run mode.
N Display Toggle Pushbutton. Pressing this control scrolls through the display modes.
O Previous Pushbutton. Pressing this control scrolls through the LCD display modes.
P Select/Enter Pushbutton. This control is pressed to enter menu sub-levels and select setpoints.
Q Lower/Scroll Pushbutton. This control is pressed to scroll backward through menus or
decrement setpoints.
R Raise/Scroll Pushbutton. This control is pressed to scroll forward through menus or increment
setpoints.
REAR PANEL
All DGC-500 interface terminals are located on the rear panel. DGC-500 units have two types of
terminals: quarter-inch, male, quick-connect terminals and a DB9 serial communication connector. Figure
2-2 illustrates the DGC-500 rear-panel HMI. Table 2-2 lists the call-outs of Figure 2-2 along with a
description of each rear-panel HMI component.
2-2 DGC-500 Human-Machine Interface 9355400990 Rev H
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