Loss Of Dc Power; Speed Switch Malfunction; Engine Starter Coil Failure; Audible Alarm Silencing - Eaton FD120 Manual

O & M Manual IM05805019K-002
Effective April 2015

4.3.3 Loss of DC Power

A visual indication and audible alarm is provided to indicate DC
power loss due to both batteries being disconnected from the
controller. This indication will also be provided if the controller
is not operating due to an electronic board failure.

4.3.4 Speed Switch Malfunction

A visual indication and audible alarm is provided to indicate
when the following condition has occurred: The controller is
running, the engine run signal has been lost and the oil
pressure has not dropped. (Terminals 2 and 4)

4.3.5 Engine Starter Coil Failure

The Diesel Plus controller constantly monitors the health of the
engine starter solenoids. A visual indication and audible alarm
is provided if the Diesel Plus detects that the engine starter
solenoid is disconnected or damaged.

4.3.6 Audible Alarm Silencing

A separate audible alarm silence switch is provided which can
manually silence the alarm buzzer for optional alarms. The
silencing switch is located adjacent to the visual indicator.

4.3.7 Power Failure Alarm

An alarm signal is provided when both circuit breakers have
tripped or been opened.

4.4 Output Relays

The primary control outputs of the Diesel Plus controller are dry
relay contacts. These relays include 2 separate "Form C"
outputs for each of the following: Engine Run, Future #1, Future
#2, Low Fuel, Auto Mode and Common Alarm.
The Engine Run relay is UL/CSA rated at 10A, 1/2HP , 240Vac. The
remaining alarm relays are UL/CSA rated at 8A, 250Vac. The DC
rating is 8A, 30Vdc.
Each relay has a green LED on the I/O board to indicate the relay
status.
If the LED is "On" the relay is energized. If the LED is "Off" the
relay is de-energized.

4.4.1 Relay Functions

Engine Run
This relay is used for remote monitoring when the engine is
running. When the engine speed switch sends a signal to the
Diesel Plus controller, this relay will energize.
Common Alarm
This relay is used to signal pump room or engine trouble
alarms. This relay is energized under normal conditions and
will de-energize during alarm.
Low Fuel
This relay is used for remote monitoring of the fuel tank level.
When the level switch in the fuel tank falls below its pre-set
level, this relay will energize.
10 EATON INDUSTRIES CANADA COMPANY www.chfire.com
Diesel Engine Fire Pump Controller

4.4.2 Future #1 - Future # 2

The two Form C relays can be programmed for a number of
alarm or status conditions. Refer to Appendix E(b) for
programming details.

4.4.3 Engine Alarm Functions

Engine Overspeed
An "Engine Overspeed" alarm will shutdown the engine
regardless of the start condition - in all modes. The signal is
sent from the engine to the controller.
Fail To Start
After 6 cranking attempts, three attempts per battery, the "Fail
To Start" annunciator will illuminate. Attention to the diesel and
its associated equipment is required immediately.
High Engine Temperature
Indicates that the coolant temperature in the water jackets is
extremely hot. The over temperature switch on the engine
signals the controller. The engine continues to run in the AUTO
and MANUAL modes. During a manual engine test and during
the weekly test cycle the engine will shutdown.
Low Oil Pressure
The controller has an inherent delay to bypass the low oil
pressure alarm during engine start up. After the delay, should
the engine receive a "Low Oil Pressure" signal, the controller
will initiate an alarm. The engine will continue to run in the
"AUTO" and "MANUAL " mode. During a manual engine test
and during the weekly test cycle this alarm will automatically
shutdown the engine.
Low Fuel
(When Fuel Level Switch Wired)
Indicates that the engine fuel supply is low. The engine
continues to run.

5. PROGRAMMING

5.1 Introduction

The Diesel Plus controller is fully programmable from the
device's faceplate. Users can program set points as well as
other parameters. The time, date, and set points can only be
changed from the menu system. The menu system is broken
down to seven (7) menu groupings. They include, Language,
Regional Settings, Pressure Settings, Timer Values, Custom
Input/Output, System Configuration Menu, and Main Menu
Password.

5.2 Navigation

In order to enter the menu system, press the Menu button on
the Diesel Plus faceplate. If the main menu password has been
enabled, the user will be required to enter the password at this
time. Once in the menu system, the Up and Down arrow keys
will provide navigation between each menu item. The display
will show the previous, current, and next menu items. The
current menu item is located on the middle of the four line
display. All Diesel Plus controller programmable features and
associated set-point possibilities are presented in Table 1.
The following set points are programmable in the Diesel Plus
controller.
EATON Diesel Plus