4 Generac
®
Power Systems, Inc.
If an alarm becomes active, the display will switch to
this page and display the highest priority alarm mes-
sage. The back light and alarm LED will flash, and the
audible alarm will be activated. The user must press
the enter key to accept the alarm, at which time the
back light will be on continuously. If the alarm is non-
latching, the alarm message will clear as soon as the
condition is cleared. If the alarm is a latching alarm,
then the user must press the reset key to clear the mes-
sage. Once a message has cleared, the display will show
the next priority alarm message.
After an alarm has been accepted, the user is able to
scroll through other active alarm and message
screens using the up and down arrow keys.
Alarm Log Page
This page displays the last 50 alarm messages. When
the user selects this page, it displays the latest alarm
message. Pressing the up or down arrow keys will
allow the user to scroll up and down the list of mes-
sages.
Instrumentation Page
This page displays one of the analog signal values.
Pressing the up or down arrow keys will scroll to
other analog display screens.
Parameter Entry Page
This page allows the user to modify the various set
points and programmable options. See the
“Programmable Parameters” section of this manual
for more specific option information. The user must
press the Enter key when this page is displayed and
will then be prompted for a password. The password
is a six-digit number and the default value is 000000.
However, the user will be able to change the pass-
word. Digits will be selected using up and down
arrow keys, and the cursor will be moved by the left
and right arrow keys. When the user presses the
Enter key, the password will be checked. If the pass-
word is correct, the display will show one of the data
entry screens.
There are four parameter entry menus: “Engine
Parameter,” “System Alarm,” “Digital I/O” and “Analog
Input.” The user will be able to scroll through the vari-
ous parameters in each menu using the up and down
arrow keys. The left and right arrow keys are used to
switch between the four menus. When a parameter that
requires changing is displayed, the user presses the
Enter key to enable data entry. A cursor will appear at
the first character that can be altered. The user can
then change the character using the up and down arrow
keys. The user can move to the next character or previ-
ous character using the left and right arrow keys.
Pressing the Enter key will accept the new setting.
Pressing the Reset key will ignore the new setting.
If an alarm condition occurs when the user is enter-
ing data, the data will be ignored, and the display will
show the alarm screen. If a status condition occurs
when data is being entered, the display will not
change.
Once the user has finished entering data by pressing
the Enter key, pressing the Reset key will allow the
user to select other pages using the left and right
arrow keys.
ALARMS
All analog channels have alarms associated with
them. There is also a coolant level alarm, an emer-
gency stop alarm and eight user definable inputs that
can be used to generate alarms. Alarms can be status
messages, non-latching alarms, latching alarms or
shutdown alarms. When a new alarm condition
occurs, the alarm LED and the display back light will
flash. Also, the alarm relay contacts will close (oper-
ating the audible alarm), and the display will show
the alarm message. The user will be able to accept the
alarm (turn off the audible alarm) from the keypad,
and if the alarm condition has cleared, he or she also
will be able to clear the alarm. Non-latching alarms
will clear themselves if the alarm condition is no
longer present. Latching alarms require the user to
clear the alarm from the keypad even if the alarm
condition is no longer present. Shutdown alarms are
similar to latched alarms, but they also cause the
generator to stop and will not allow it to start again
until the key-switch has been turned to the OFF posi-
tion to reset the alarm. Status messages are similar
to non-latching alarms except that they do not acti-
vate the alarm relay or the alarm LED and are not
recorded on the alarm log.
Alarms can be always active, immediately active when
the generator is commanded to run, or active after
the hold off timer has expired. This timer delays the
operation of certain alarms until a programmable
time after the engine has started. Some alarms allow
the user to define the type of alarm and when it is
active.
The following chart is a summary of the alarms and
the programmable options:
Section 1 — General Information
E Option Control Panels
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