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Sequence of Operation
NOTE: The following sequence is pre-pro-
grammed into the EA150 Engine Automatic.
Operation Sequence with Panel in Auto
When the EA150 receives an automatic start
signal the engine will begin to crank and the
Shutdown Lockout time delay will begin. The
Shutdown Lockout Delay does two functions. It
allows the EA150 to disregard signals from the
low oil pressure and high temperature SWICH-
GAGE
®
at engine start-up. Also, if the engine
false starts, the re-crank will be delayed to
allow the engine to stop moving before engag-
ing the starter. If the engine fails to start after
the set number of crank and rest attempts, the
EA150 will indicate an overcrank condition by
turning on the Overcrank LED. The engine will
be locked out from any further start attempts.
NOTE: All shutdown conditions can be reset
by moving the selector switch into the OFF
position and back into the AUTO position.
Once Crank Disconnect speed is reached the
Engine Running LED will turn on. The engine
will also run at full governed speed while in
operation. If the engine speed exceeds the
Overspeed setpoint, the EA150 will initiate an
engine shutdown and Overspeed LED will turn
on. The engine will be locked out from any fur-
ther start attempts.
If a low oil pressure or high temperature condi-
tion occurs while the engine is running, the
EA150 will shutdown the engine and the
appropriate LED will turn on. The engine will
be locked out from any further start attempts.
NOTE: The Shutdown Lockout Delay must
have expired to get a shutdown on low oil pres-
sure and high temperature.
Operation Sequence with Panel in Test
When the selector switch is placed in the TEST
position, an automatic start signal is simulated.
Therefore, the controller will operate the same
as it does in AUTO. However, it will continue
to run as long as there are no signals from mon-
itored conditions or until the selector switch is
moved to the AUTO or OFF positions. Keep in
mind, it will still shutdown the engine if a mon-
itored condition occurs such as low oil pressure
or high temperature.
12345
Relay
1
Relay
2
1
2
3
4
5
6
7
8
9
10
11
12
To Starter
Relay**
131415
To Solenoid
Fuel Valve**
Auto
Off
Test
Selector Switch
Magnetic
Pickup
Low Oil
Pressure
High
Temperature
Hourmeter
Fuse Lead
To Battery (+)
Ground
Customer Wiring
Start/Stop*
Contact
Shielded
Cable
* Close to start and run. Open to stop.
** When using the EA150 with inductive loads, we recommend
installing a suppression diode across all coils.
How to Order
Specify EA150.
LOW PRESSURE
HIGH TEMPERATURE
OVERCRANK
OVERSPEED
ENGINE RUNNING
TEST OFF AUTO
8-1/2 in.
(216 mm)
7 in.
(178 mm)
5-1/2 in.
(140 mm)
7-3/4 in.
(197 mm)
3 in.
(76 mm)
Dimensions
Typical Wiring Diagram
EA-94013B page 2 of 2
Warranty
A limited warranty on materials and workmanship is given with
this FW Murphy product. A copy of the warranty may be viewed
or printed by going to www.fwmurphy.com/support/warranty.htm
CONTROL SYSTEMS & SERVICES DIVISION
P.O. Box 1819; Rosenberg, Texas 77471; USA
+1 281 633 4500 fax+1 281 633 4588
e-mailsales@fwmurphy.com
MURPHY DE MEXICO, S.A. DE C.V.
Blvd. Antonio Rocha Cordero 300, Fracción del Aguaje
San Luis Potosí, S.L.P.; México 78384
+52 444 8206264 fax +52 444 8206336
Villahermosa Office +52 993 3162117
e-mailventas@murphymex.com.mx
www.murphymex.com.mx
FRANK W. MURPHY, LTD.
Church Rd.; Laverstock, Salisbury SP1 1QZ; U.K.
+44 1722 410055 fax+44 1722 410088
e-mailsales@fwmurphy.co.uk
www.fwmurphy.co.uk
MURPHY SWITCH OF CALIFORNIA
41343 12th Street West
Palmdale, California 93551-1442; USA
+1 661 272 4700 fax+1 661 947 7570
e-mailsales@murphyswitch.com
www.murphyswitch.com
In order to consistently bring you the highest quality, full featured products, we reserve the right to change our specifications and designs at any time.
MACQUARRIE CORPORATION
1620 Hume Highway
Campbellfield, Vic 3061; Australia
+61 3 9358 5555 fax+61 3 9358 5558
e-mailmurphy@macquarrie.com.au
FW Murphy
P.O. Box 470248
Tulsa, Oklahoma 74147 USA
+1 918 317 4100
fax +1 918 317 4266
e-mail sales@fwmurphy.com
www.fwmurphy.com
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USA–ISO 9001:2000 FM 28221
UK–ISO 9001:2000 FM 29422
Printed in U.S.A.