Murphy A88, A88-F User Manual

®

A

AUTOMATIC ENGINE CONTROLLERS

MODELS A88 AND A88-F

INSTALLATION MANUAL

A88-8916N

Revised 01-97

Section 40

(00-02-0196)

TABLE OF CONTENTS

®

FRANK W.

MFR.

SECTION PAGE
I INTRODUCTION 1
II SPECIFICATIONS 1

IIA Power Requirements 1
IIB Input Requirements 1
IIC Output Ratings 1

III FRONT PANEL DESCRIPTION 2
IIIA Description of LED Callouts 3
IIIB Description of AOT Switch, Crank Disconnect

Control & Rest/Crank Time Control 3

IV OPTIONAL HOOKUPS 4
V OPERATION 5

LIST OF ILLUSTRATIONS

TYPE DESCRIPTION PAGE

Illustration Face Plate, A88 and A88-F 2
Illustration Optional Hookup Schemes 4
Diagram 1 Basic Wiring Hookup, A88 6
Diagram 2 A88 Wiring Harness 7
Diagram 3 Basic Wiring Hookup, A88-F 8
Diagram 4 A88-F Wiring Terminals 9
Diagram 5 Wiring for Honda Generator EM3500SX/EM5000SX 10
Diagram 6 Wiring for Honda Generator CXS360 11

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.

■ Murphy de México, S.A. de C.V.

Blvd. Antonio Rocha Cordero 300, Fracción del Aguaje
San Luis Potosí, S.L.P.; México 78384

tel. [phone] fax [phone]
e-mail [e-mail]

■ Murphy Switch of California

P.O. Box 900788; Palmdale, California 93590; USA

tel. [phone] fax [phone]
e-mail [e-mail]

■ Frank W. Murphy France

tel. [phone] fax [phone]

Since 1939

■ Frank W. Murphy Manufacturer

P.O. Box 470248; Tulsa, Oklahoma 74147; USA

tel. [phone] fax [phone]
e-mail [e-mail]

■ Frank W. Murphy Southern Division

P.O. Box 1819; Rosenberg, Texas 77471; USA

tel. [phone] fax [phone]
e-mail [e-mail]

Printed in U.S.A.

■ Frank W. Murphy, Ltd.

Church Rd.; Laverstock, Salisbury SP1 1QZ; U.K.

tel. [phone] fax [phone] tlx 477088
e-mail [e-mail]

■ Frank W. Murphy Pte., Ltd.

26 Siglap Drive; Republic of Singapore 456153

tel. [phone] fax [phone]
e-mail [e-mail]

■ Murphek Pty., Ltd.

1620 Hume Highway; Campbellfield, Vic 3061; Australia
tel. [phone] fax [phone]

WARNING

BEFORE BEGINNING

INSTALLATION OF THIS

MURPHY PRODUCT

✔ Disconnect all electrical

power to the machine.

✔ Make sure the machine

cannot operate during
installation.

✔ Follow all safety warnings of

the machine manufacturer.

✔ Read and follow all

installation instructions.

SECTION I: INTRODUCTION

A. The Automatic Engine Controller, Model A88 and
A88-F is designed to automatically start, monitor and stop

electric start engines. The A88 comes in an all-weather
case with a 5 foot cable and a plug for connection. The
A88-F is the same system, but housed in a panel-mount
case with terminals on back for connecting.

B. Features

1. Has a self-contained Auto-Off-Test Switch.

2. Rest and crank time selected by a single switch.

3. Adjustable crank disconnect speed switch.

4. Close a switch to run; open to stop feature.

5. Engine starts and runs when a contact closes and
stops when a separate set of contacts close.

6. Goes into a rest period in the event of a false start.

7. Alarm before start to alert personnel.

SECTION II: SPECIFICATIONS

A. Power Requirements:

1. Voltage 8-30 VDC, negative ground.

2. Current @ 12 volts less load current.
a. standby 10 ma
b. crank 140 ma
c. shutdown 32 ma

3. Maximum fuse size, 4 amp, slow blow.

B. Input Requirements:

1. Start-stop control switch

a. SPST N.O. dry contact; close to run, open to stop

b. SPDT dry contact

c. Two SPST N.O. dry contacts; one, momentary

close to run; one momentary close to stop

2. Magnetic pickup or alternator tach requirements:
a. voltage 2 volts, rms minimum
b. 25 to 2000 hz crank disconnect
c. maximum 100 volts Pk Pk

C. Output Ratings: Source = switch to battery

Sink = switch to ground

1. Ignition or run relay; SPDT dry relay contacts
rated 10 amp @ 30 VDC resistive, 6 amp @ 30
VDC inductive.

2. Crank output
a. transistor 1 amp source
b. transistor 1 amp sink

3. Choke
a. transistor 1 amp sink

4. Time delay
a. transistor 1 amp sink

5. Summary
a. transistor 1/2 amp sink

8. Crank disconnect circuitry accepts the following inputs:
a. breaker or electronic type ignition
b. magnetic pickup
c. alternator tach
d. flywheel alternator
e. mechanical switch

9. Has a built-in one minute time delay for customer use.

10. Five fixed crank attempts before shutdown.

11. An output to indicate that the engine is running
to be used as remote indication or in warm up
operation.

12. Has a summary of shutdown output.

13. Monitors the following engine functions and will
shut the engine down in event of a failure:

a. Overcrank
b. Oil Pressure
c. Engine Temperature
d. Spare

14. Has 30 second lockout feature for start up.

15. Output for choke actuator.

1

SECTION III: FRONT PANEL DESCRIPTION

20s

15s

10s

5s

CRANK

AND

REST

TIME

PICK UP

PRESENT

CRANK

CRANK

DISCONNECT

IGNITION

ON

CRANK

DISCONNECT

OVER

CRANK

ENGINE

TEMP.

CHOKE

OIL

PRESSURE

AUTO
OFF
TEST

CRANK

AND

REST

TIME

IGNITION

ON

PICK UP

PRESENT

CRANK

CRANK

DISCONNECT

CRANK

DISCONNECT

20s

15s

10s

5s

CHOKE

OVER

CRANK

OIL

PRESSURE

ENGINE

TEMP.

AUTO
OFF
TEST

A88

Automatic

Engine

Controller

(Shown without enclosure)

A88-F

Automatic

Engine

Controller

(Shown without enclosure)

2