Automatic Transfer Operation; Sequence Of Automatic Operation - Honeywell 10 kW Owner's Manual

3.1.2 SETTING THE EXERCISE TIMER
This generator is equipped with an exercise timer. Once it is set,
the generator will start and exercise every seven days, on the day
of the week and at the time of day specified. During this exercise
period, the unit runs for approximately 12 minutes and then shuts
down. Transfer of loads to the generator output does not occur
during the exercise cycle unless utility power is lost.
INSTALLATION ASSISTANT
Interconnect System Self Test Feature (follow the on-screen
prompts)
Upon power up, this controller will go through a system self test
which will check for the presence of utility voltage on the DC
circuits. This is done to prevent damage if the installer mistakenly
connects AC utility power sense wires into the DC terminal block.
If utility voltage is detected, the controller will display a warning
message and lock out the generator, preventing damage to the
controller. Power to the controller must be removed to clear this
warning.
Utility voltage must be turned on and present at the N1 and N2
terminals inside the generator control panel for this test to be
performed and pass.
DAMAGE CAUSED BY MISWIRING OF THE INTERCONNECT
WIRES IS NOT WARRANTABLE!
This test will be performed each time the controller is powered
up.
Upon first power up of the generator, the display interface will
begin an installation assistant. The assistant will prompt the user
to set the minimum settings to operate. These settings are sim-
ply: Current Date/Time and Exercise Day/Time. The maintenance
intervals will be initialized when the exercise time is entered (Figure
3.1).
The exercise settings can be changed at any time via the "EDIT"
menu (see Appendix, "Menu System").
If the 12 volt battery is disconnected or the fuse removed, the
Installation Assistant will operate upon power restoration. The
only difference is the display will only prompt the customer for the
current Time and Date.
IF THE INSTALLER TESTS THE GENERATOR PRIOR TO
INSTALLATION, PRESS THE "ENTER" KEY TO AVOID SETTING
UP THE EXERCISE TIME. THIS WILL ENSURE THAT WHEN
THE CUSTOMER POWERS UP THE UNIT, HE WILL STILL BE
PROMPTED TO ENTER AN EXERCISE TIME.
The exerciser will only work in the AUTO mode and will not work
unless this procedure is performed. The current date/time will
need to be reset every time the 12 volt battery is disconnected
and then reconnected, and/or when the fuse is removed.
Low Speed Exercise
15 and 20kW units will run at 2,400 RPM on Low Speed
Exercize.
NOTE:
NOTE:
Display Interface Menus
The LCD display is organized as detailed below:
• The "Home" page, this page is the default page which will be
displayed if no keys are pressed for 30 seconds. This page
normally shows the current Status message and the current
date and time. The highest priority active Alarm and/or Warning
will be automatically posted on this page as well as flashing
the backlight when such an event is detected. In the case of
multiple Alarms or Warnings, only the first message will be
displayed. To clear an Alarm or Warning, see the Protection
Systems section - Clear Alarm.
• The display backlight is normally off. If the user presses any
key, the backlight will come on automatically and remain on for
30 seconds after the last key was pressed.
• The "Main Menu" page will allow the user to navigate to all other
pages or sub-menus by using the Left/Right and Enter keys.
This page can be accessed at any time with several presses of
the dedicated Escape key. Each press of the Escape key takes
you back to the previous menu until the main menu is reached.
This page displays the following options: HISTORY; STATUS;
EDIT; AND DEBUG. (See the Appendix - "Menu System".)
3.2 AUTOMATIC TRANSFER
OPERATION
To select automatic operation, do the following:
1. Make sure the transfer switch main contacts are set to their
UTILITY position, i.e., loads connected to the utility power
source (Figure 3.1).
2. Be sure that normal UTILITY power source voltage is avail-
able to transfer switch terminal lugs N1 and N2 (Refer to the
Electrical Data section).
3. Set the generator's AUTO/OFF/MANUAL switch to AUTO.
4. Set the generator's main circuit breaker to its ON (or CLOSED)
position.
With the preceding steps complete, the generator will start auto-
matically when utility source voltage drops below a preset level.
After the unit starts, loads are transferred to the standby power
source. Refer to the Sequence of Automatic Operation section.
3.3

SEQUENCE OF AUTOMATIC OPERATION

3.3.1 UTILITY FAILURE
Initial Conditions: Generator in Auto, ready to run, load being sup-
plied by utility source. When utility fails (below 60% of nominal),
a 10 second (optionally programmable) line interrupt delay time is
started. If the utility is still gone when the timer expires, the engine
will crank and start. Once started, a five (5) second engine warm-
up timer will be initiated. When the warm-up timer expires, the
control will transfer the load to the generator. If the utility power is
restored (above 80% of nominal) at any time from the initiation of
the engine start until the generator is ready to accept load (5 sec-
ond warm-up time has not elapsed), the controller will complete
the start cycle and run the generator through its normal cool down
cycle; however, the load will remain on the utility source.
Operation
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