7/31/2019 ECU-9957N Cut Sheet

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The ECU-9957N engine control provides complete automation and safetymonitoring of a gas or diesel engine. The ECU-9957N controls the starterand fuel thus completely taking the operator out of the picture. A built inspeed switch controls both starter disengagement and overspeed protection.

ECU-57N

ONE VERSION FOR12 AND 24 VDC

APPLICATIONS: Generator Control Panels, Automatic Engine Systems

FEATURES:

Single or Multi-crank modes are fieldadjustable

Built in speed switch

Grounded or positive HWT/LOP inputs

Low oil pressure and high water tempoverride during cranking

Wide temperature range -40C to +85C

Epoxy encapsulated module for excellentfield reliability

1 AMP Relays for annunciator outputs

ECU-57N A COMPLETE AUTOMATIC ENGINE CONTROL

The ECU-9957N covers just about all the essential engine control functions that are askedfor in most specifications.

The ECU-9957N automatically cranks, starts and monitors an engine for Overcrank,Overspeed, High Water Temperature and Low Oil Pressure. Any crank timing sequence isaccomplished by using the multiple or single crank modes in conjunction with the timer

adjustments. A built in speed switch uses a magnetic pickup to monitor engine speed forcrank disconnectand overspeed. The bypass timer/logic assures Low Oil Pressure and High Water Tempoverride during the crank period and an additional adjustable period after crank disconnectbefor shutdown actually occurs. The ECU-9957N expands to as many faults as required byusing the Engine Alarm Input/Output.

Specifications Subject to Change Without Notice

ECUIS A REGISTERED TRADEMARK OFENGINEERING CONCEPTS UNLIMITED, INC.

P.O. BOX 250 - 8950 TECHNOLOGY DRIVE - FISHERS, IN 46038Voice: 317-849-8470 Fax: 317-849-6475 E-Mail: sales@ecu-engine-controls.com

ECU-57N 0803F

AUTOMATIC ENGINE CONTROL FORDIESEL/GAS ENGINES

7/31/2019 ECU-9957N Cut Sheet

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ORDERING INFORMATION:ORDER BY SPECIFYING: ECU-9957N

ECU IS A REGISTERED TRADEMARK OFENGINEERING CONCEPTS UNLIMITED, INC.

Mounting holes will accept No. 8 or No. 6 screws.All dimensions in inches.

ECU-9957N TERMINAL OUT PHYSICAL DIMENSIONS

SPECIFICATIONS: VOLTAGE RANGE - 9 TO 28 VOLTSMAGNETIC PICKUP - 250 TO 8500 HERTZSTARTER AND FUEL OUTPUTS - 5 AMPS MAXLAMP OUTPUTS (TOTAL) - 1 AMP MAX

The above illustrates the ECU-9957N engine control with an energized to run engine. Placing the controlswitch in MANUAL or closure of the Remote Start Contacts while in AUTO initiates the Crank mode. The Fueland Starter Relays are energized causing the engine to begin cranking. If the engine does not start in theallotted time, as determined by the Crank Cycle Adjust and Dip Switch setting, the Overcrank Fault occurs, andthe Fuel and Starter Relays are turned off. If during cranking the internal speed switch detects a speed equal toor above the Crank Disconnect Adjustment Setting the Starter Relay turns off, the LOP/HWT delay timer isinitiated. After this delay period if the LOP or HWT switch closes the engine will shutdown immediately. If theinternal speed switch detects a speed equal to or above the Overspeed Adjustment Setting the engine isshutdown immediately. To stop the engine or to clear a fault condition place the control switch in the Off position.

SAMPLE ECU-9957N APPLICATION:MONITORING SYSTEM BATTERY VOLTAGE

LOW OIL PRESSURE LAMP

1

2

3

4

5

6

7

8

9

10

11

1215 14 13 X1

HIGH WATER TEMP LAMP

OVERCRANK LAMP

OVERSPEED LAMP

ENGINE STARTED LAMP

COMMON ALARM LAMP

OFF

AUTO

MANUAL

HIGH WATER TEMP

LOW OIL PRESS

LAMP TEST

OVERSPEED VERIFYSINGLE OR CYCLE CRANKCRANK ATTEMPTS

MAGNETICPICKUPINPUT

BATTERYFUEL RELAY

START RELAY

FUSE

SPEEDOVER

10 AMP

POSITIVE

CYCLECRANK

CRANK

DISCONNECT

HIGH WATER TEMPDELAYOIL PRESS

TIE TO BATTERYEXTRA FAULTS

POSITIVE

BATTERY

SR

FR

CONTACTSSTART

REMOTE

.2606.6

3.178.7

.307.62

2.9574.9

.6516.51

INCHMM

BACK VIEW SIDE VIEW

1.5038.1

.300

7

8

9

10

11

1215 14 13 X1

1

2

3

4

5

6

EXTRA FAULT IN

ENGINE STARTEDLAMP OUTPUT

OVERSPEED

HIGH WATER TEMP.

OVERCRANK

LAMP OUTPUT

LAMP OUTPUT

LAMP OUTPUT

LAMP OUTPUT

ALARM OUT

LOW OIL PRESSURE

MAGNETICPICKUP INPUT

BATTERY NEGATIVE

LAMP TEST

LOW OIL PRESSUREINPUT

INPUTHIGH WATER TEMP.

STARTER RELAYOUTPUT

FUEL RELAYOUTPUT

1 2 3 4 5

CRANK ATTEMPTS

OVERSPEED VERIFY

SINGLE OR CYCLE CRANK

CYCLECRANK

DISCONCRANK

SPEEDOVER

DELAYOIL PRESS

AUTO MANUAL