Murphy MURPHYMATIC ASM170 Installation And Operation Instructions Manual

Description

The ASM170 is a state of the art, automatic engine start / stop
controller with selectable warmup / cooldown, glow plug, or choke
capabilities. The ASM170 operates from a 12 or 24 volt battery and can
withstand voltage drops during cranking. It includes crank and rest
cycles, sensing circuit for crank disconnect and overspeed, overcrank,
and recrank protection on false starts. Four red LED’s indicate first out
shutdown from low oil pressure, high temperature, overcrank,
overspeed, auxiliary input, high/low level, engine stall, and no speed
signal. A fifth green LED lights when the engine has started. This same
LED flashes during the rest period while the unit is cycle cranking the
engine. A sixth LED lights when the multifunction output is operating.
This output is programmable using the DIP switches located on the
back of the unit.
The ASM170 is housed in an ABS plastic enclosure and the electronics
are encapsulated in a protective epoxy resin. Due to its low cost and
flexible features, it is ideal for generator or pumping applications.

Specifications

Power Input: 6 to 28 VDC.
Power Consumption Standby (AUTO): <1mA.
Operating Temperature: -40 to 185 °F (-40 to +85 °C).
Inputs: Ground or positive inputs for high temperature, low oil

pressure, High/Low Level, Auxiliary / Remote Stop
sensors. (Note: The momentary start input must be at least 100 ms in
duration to be recognized as a valid start.)
Lamp Test: When unit is powered up in Manual or Auto, the LED’s
light for 1 second as a test.
Outputs: 5A smart FET for cranking and multifunction output.
Sources from battery +. 10A smart FET for Fuel Valve (Energized to
Run) output. Sources from battery +. 125 ma transistor for common
failure, engine run, and auxiliary output. Sinks to battery –.

Crank Attempts: Selectable for 3, 5, 10, or 255.
Crank / Rest Cycle Timing: Field adjustable 1 to 30 seconds.
Multifunction Output: Field programmable to one of the following

options: Glowplug, Cooldown, Warmup/Cooldown, Warmup, Airgate –
Overspeed Only, Airgate – Always, Choke, or Auxiliary Run output.
Shutdown Lockout Time Delay: Field adjustable 1 to 300 seconds.
Locks out low oil pressure, high temperature, and loss of speed
shutdowns on start-up.

Crank Disconnect Speed Setting: From 13 to 2500 Hz.
Overspeed Trip Point Setting: From 13 to 8500 Hz.
Speed Sensing Input: 1.5VAC RMS to 140 VAC RMS.
Shipping Weight: 1 lb. (.45 kg.)
Shipping Dimensions: 6.25 x 6.25 x 4.5 in. (159 x 159 x 114 mm).

Installation Accessories

•

Tools for the module mounting, such as drill and screwdriver.

•

Optional Wire Harness Kit (40000138).

•

12 and 18 AWG (4.2 mm2 and 1.0 mm2) wire for hook up.

•

Set of wire termination tools.

•

Wire Termination; such as spade terminals. 1/4” crimp-on FASTON

®

receptacle.

Mounting Drill Pattern

(Do not scale or use as a template)

Mounting the ASM170 Module

1. To mount the ASM170 module to your panel, drill six (0.25 in.
[6mm] dia.) holes for LED indicators, and two (0.203 in. [5 mm] dia.)
holes for mounting screws. See “Mounting Drill Pattern”, for
dimensions.

2. Insert the ASM170 module from the back of the panel into the pre­drilled holes.

3. Secure the module in place with the two (2) screws provided.

ASM170 MURPHYMATIC

®

Micro-controller

Installation and Operation Instructions

Please read the following information before installing. A visual inspection of this product for damage
from shipping is recommended before installing. It is your responsibility to have a qualified person install
this unit and make sure it conforms to local codes.

GENERAL INFORMATION

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.

ASM-03024N

Revised 05-04

Section 40 and 75

(00-02-0531)

CAUTION:

Certain danger to human and to equipment
such as applied in a mobile or marine application may occur
if some equipment is stopped without pre-warning. It is
therefore, recommended that monitored functions be limited

to alarm only or to alarm before shutdown in such applications.

ASM-03024N page 1 of 4

WARNING

2.750 in. (70 mm)

2.650 in. (67 mm)

2.300 in. (58 mm)

1.950 in. (50 mm)

1.600 in. (41 mm)

1.250 in. (32 mm)

0.900 in. (23 mm)

0.203 in. (5 mm) dia.

Origin

0.260 in. (7 mm)

0.750 in. (19 mm)

2.563 in. (65 mm)

2.750 in. (70 mm)

3.100 in. (79 mm)

0.203 in.
(5 mm)
diameter

0.885 in.
(22 mm)

On the back of the ASM170, you will find five (5)
potentiometers and seven (7) DIP switches for
customizing your controller. The five potentiometers
have the following functions:

R1 = Crank / Rest Delay (1-25 seconds)
R2 = Overspeed Frequency (13-8500 Hz)
R3 = Crank Disconnect Frequency (13-2500 Hz)
R4 = Multifunction Timer.
R5 = Lockout Delay (1-300 seconds)

Crank / Rest Delay (R1 Pot) – Adjustable between 1 and 25 seconds

The Crank / Rest adjustment is used to vary the amount of time the
cranking output is ON and OFF during the start sequence. When a start
attempt begins, the controller will energize the cranking output for the
amount of time set on this pot. If the engine is not sensed to have started,
the controller will de-energize the cranking output for the same period of
time before energizing it again. During the rest period the RUN light
will flash.

Overspeed (R2 Pot) – Adjustable between 13 and 8500 Hz

The OVERSPEED adjustment is used to set the point at which the unit
will signal for a shutdown if the engine speed should reach too high an
RPM. To set the OVERSPEED value, turn the OVERSPEED Pot fully
clockwise and run the engine up to the maximum operating speed. Next,
slowly turn the Pot counterclockwise until the engine shuts down on
OVERSPEED. Now, turn the Pot clockwise two turns. This will adjust
the OVERSPEED set point approximately 8% higher than the maximum
engine operating speed.

Crank Disconnect (R3 Pot) – Adjustable between 13 and 2500 Hz

The CRANK DISCONNECT adjustment is used to let the ASM170
know when the engine has started so that it will turn OFF the cranking
output. Turn R3 clockwise 25 turns, and then turn R3 counter clockwise

The ASM170 is a pilot duty device. The outputs are designed for
control only.

1. Wire the ASM170 using 18 AWG stranded wire. When wiring to the

push on FET common terminal, we suggest using a larger wire size (12
AWG recommended).

2. When hooking the battery positive (+) and ground wires to the
ASM170, route them directly from the battery to the unit. This will help

reduce electrical noise coupling and avoid voltage losses from other
devices.

3. If a standby battery charger is installed, it must be wired directly to the
battery, NOTto the ASM170. This could cause electronic “noise”
produced by the charger to be coupled into the microprocessor. If the
“noise” is severe, erratic operation could occur.

4. Do not route low voltage DC (battery) control wires in the same conduit
as high voltage AC wires.

5. Use shielded cable for connecting the magnetic pick up to the ASM170.
Ground only one end of the shield (we suggest you ground it at the
engine).

6.Always place reverse bias diodes across inductive loads. This helps
eliminate a source of electromagnetic noise.

WIRING THE ASM170

WARNING:

Disconnect ALL electrical power before beginning

the wiring. STOP

ALL machinery before performing the hook up.
Any load connected to the panel which draws current in excess of
5

Amps for the crank and multifunction outputs or 10 Amps for the

fuel output MUST

be piloted at the load.

ASM-03024N page 2 of 4

MAKING ADJUSTMENTS TO THE ASM170

Potentiometer and
DIP Switch Detail 1

Molex and Digikey are registered trademarks of their respective corporations.

DigiKey Part Number

WM9999-ND

Manufacturer Part Number

63811-1000

Description

Molex Universal Crimp Tool

DigiKey Part Number

WM9918-ND

Manufacturer Part Number

11-03-0044

Description

Extraction Tool Mini-Fit Jr.

DigiKey Part Number

WM9912-ND

Manufacturer Part Number

11-01-0197

Description

Crimp Tool 18-24 AWG Mini-Fit Jr.

Crimping Tools

External Toggle Switch
(00009347 ONLY)

Fuel Valve

Alternator

3

12

MAINTAINED
AUTO START
CONTACT

TEST

B+

AUTO

Excitation
Relay

Pilot

Relay

Starter

Assembly

K1

Load

To Battery(+)

10 Amp Max.Load

5AmpMax. Load

5AmpMax. Load

125 mA Max.

125 mA Max.

See Connector Plug Drawing Below

For Wire Connection Locations

Outputs Inputs

18

17

15

7

16

FET Common, Connect to
"push-on" terminal at rear
of controller

Remote Strt/Stp

Fuel

(or Mom.Strt)

Crank

Multifunction Out

Engine Run

Common Fail

Battery (+)

Gnd(-)

Freq. ( +)

Freq. (-)

Oil Press .

Water Temp.

Level

Aux. 1 o r

(Mom. Stop)

Aux. 2

3

12

2

11

1

+/-Input

13

+/-Input

6

+/-Input

5

+/-Input

14

+/-Input

4

12 AWG Minimum

Shell:

MOLEX Part Number: 39-01-2200 or 39-01-2205

20 CIRCUIT MINI FIT JR. PLUG

Digikey WM 3709-ND

20

10

Wire Side of Plug - In Connector

Magnetic

Pickup

These functions are locked
out during the shutdown
lockoutdelay.

AWG 2 /0/00

16

9198187176

5154143132121

_

+

Battery

12/24 VDC

11

F-1
15 Amp

Alternator

Pins:
MOLEX Part Number 39-00-0039
or Digikey WM 2501-ND

K1

Ex.

Move Switch Up

To Turn ON

12345 6 7

ON

DIP
Switches

Potentiometers

25 Turn

R1

R2

R3

R4

R5

Low Oil Pressure

Aux. Inputs

High Engine Temp

High/Low Level

Over Crank

Engine Stall

Over Speed

No Speed Signal

Engine Running

Engine Rest

Timer Output Active

Light Steady/Light Flashing

ASM170

Number of Cranks Configuration

3 Cranks OFF OFF
5 Cranks
10 Cranks
255 Cranks

Multifunction Configuration

Glowplug
Cooldown
Warmup/Cooldown

R1

Warmup
Airgate-Overspeed

R2

Airgate-Always

R3

Choke
Auxiliary Run Output

R4

Level Input Configuration

R5

Alarm Only
Shutdown

Start/Stop Input Configuration

Momentary
Maintain

R1-Crank/Rest Delay (1-25 sec.)
R2-Overspeed (4-8500 Hz)
R3-Crank Stop (1-2500 Hz)
R4-Multifunction Timer (Varies)
R5-Lockout Delay (1-300 sec.)

SW1 SW2

ON OFF
OFF ON
ON ON

SW3

SW4 SW5

OFF OFF OFF
ON OFF OFF
OFF ON OFF
ON ON OFF
OFF OFF ON
ON OFF ON
OFF

ON ON

ON

ON ON

SW6

ON
OFF

SW7

ON
OFF

12 turns. Be prepared to remove the wire from the ASM170 cranking
output as soon as the engine starts. Put the selector switch in the manual
position, and remove the cranking wire as soon as the engine starts.
Slowly turn R3 counter clockwise until the green run led turns on.
Manually start the engine. If the starter does not stay engaged long
enough, turn R3 one turn clockwise. Repeat this process if necessary. If
the starter stays engaged too long, turn R3 one revolution counter
clockwise. Repeat this process if necessary.

Multifunction Timer Delay (R4 Pot) – Selected by dip switches 3, 4,
and 5 (Ranges of adjustment explained below)

The Multifunction Timer Delay adjustment pot is used to adjust how
long this output is on. There are several options for this adjustment pot.
First select which function you want with the DIP switch, and then adjust
this delay to the desired setting. Turn clockwise to increase and
counterclockwise to decrease.

Lockout Delay (R5 Pot) – Adjustable between 1 and 300 seconds

The lockout delay is used to ignore indications for shutdown on the
pressure and temperature shutdown inputs. This delay begins timing as
soon as the crank disconnect occurs. To increase the setting, turn the Pot
clockwise; to decrease the setting, turn the Pot counterclockwise.

Overcrank Adjustments (DIP Switches)

The ASM170 allows you to crank the engine 3, 5, 10, or 255 times. If
after these attempts the engine fails to start, the unit will signal
OVERCRANK. If the engine false starts and the ASM170 RE-CRANK’s
the engine, it will count this as a cranking attempt. This way, if the
engine false starts the same number of times as your cranking attempts,
then the unit will show OVERCRANK.

Multifunction OUTPUT Options

There is one output on the ASM170 that can be configured to operate in
a variety of ways. Below, you will find a description of each of these
functions. To select the function, find it on the previous chart and flip the
appropriate DIP switches to match.

GLOWPLUG: When this option is selected, the multifunction output is
used to heat the glow plugs of a Diesel engine prior to attempting to
start. Once selected, you can adjust the glowplug time delay by turning
pot R4. The delay can be set from 1 to 300 seconds. When a start signal
is received, the output will turn on for the amount of time set on R4. It
will then turn off while the crank cycle time delay is active. If the engine
fails to start, the output will turn on again after the rest delay but prior to
the crank function.

COOLDOWN: When this option is selected, the multifunction output
will turn on after a stop signal is received and stay on during the delay. It
is adjustable between 1 and 300 seconds. When the delay expires, the
output will turn off, along with the fuel valve, which will cause the
engine to stop.

WARMUP/COOLDOWN: When this option is selected, the warmup
delay begins timing as soon as the engine is sensed to have started.
When the delay expires, the multifunction output turns on and stays on
until a stop signal is received the output turns off immediately and the
delay begins timing again. When it expires, the fuel valve output is
turned off causing the engine to stop. This delay is adjustable between 1
and 300 seconds.

WARMUP: When this option is selected, the output will turn on as soon
as the engine is sensed to have started and stay on throughout the delay.
When the delay expires, the output will turn off. This delay is adjustable
between 1 and 300 seconds.

AIRGATE – OVERSPEED:When this option is selected, the output
will turn on only if an OVERSPEED shutdown condition is sensed. It
will stay on for an adjustable period of 1 to 30 seconds.

AIRGATE – ALWAYS: When this option is selected, the output will
turn on during any shutdown condition. It will stay on for an adjustable
period of 1 to 30 seconds. This output can also be used for energized to
stop applications.

CHOKE: When this option is selected, the output will turn on 3 seconds

into even number crank attempts. It will also immediately turn on if the
engine stalls. If the engine is sensed to be running, it will turn off.

AUXILIARYRUN OUTPUT: When this option is selected, the output
will turn on and off with the engine run output.

Special Features

To make the ASM170 even more flexible, it has two other special
features. The feature descriptions follow:

LEVEL INPUT CONFIGURATION: By setting the position of DIP
switch number 6, you can configure whether activating the level input
causes a shutdown or just an alarm condition. If the switch is ON, the
unit will just flash the HIGH/LOW LEVEL LED. If it is OFF, the unit
will signal the engine to shut down.

START/STOPINPUT CONFIGURATION:The ASM170 can be used
with a sustained start signal that closes to start and opens to stop or with
a momentary start / stop signal. If DIP switch 7 is ON, a brief signal to
the start input will be latched internally and the controller will signal the
engine to run. Asignal to the Auxiliary 1/ Stop input will latch in causing
the unit to signal the engine to stop. If DIP switch 7 is OFF, the unit will
signal the engine to run as long as there is a start signal present on the
start input and signal it to stop when the start signal is removed.

AUXILIARY2 INPUT: This input is not locked out and is indicated by
a double flash on the first LED. If the Auxiliary 1 input is activated, the
LED will flash once.

MAKING ADJUSTMENTS TO THE ASM170 continued

ASM-03024N page 3 of 4

NOTE: DIP switch
settings are read at
power-up only.

Number of Cranks Configuration

3 Cranks OFF OFF
5 Cranks
10 Cranks
255 Cranks

Multifunction Configuration

Glowplug
Cooldown
Warmup/Cooldown
Warmup
Airgate-Overspeed
Airgate-Always
Choke
Auxiliary Run Output

Level Input Configuration

Alarm Only
Shutdown

Start/Stop Input Configuration

Momentary
Maintain

SW1 SW2

ON OFF
OFF ON
ON ON

SW3

SW4 SW5

OFF OFF OFF
ON OFF OFF
OFF ON OFF
ON ON OFF
OFF OFF ON
ON OFF ON
OFF

ON ON

ON

ON ON

SW6

ON
OFF

SW7

ON
OFF

Move Switch Up

To Turn ON

12345 6 7

ON

Warranty

A limited warranty on materials and workmanship is given with this FWMurphy product.

A copy of the warranty may be viewed or printed by going to www.fwmurphy.com/warranty.asp.

SEQUENCE OF OPERATIONS

ASM-03024N page 4 of 4

Sequence of Operation with Panel in “AUTO”

The ASM170 module is very flexible. The basic sequence of operation follows:
When a start signal is received, the following occurs:

•

The frequency is checked relative to the crank disconnect set point. If the

frequency is sensed to be above the set point, the fuel valve will turn on and
the engine run light will light. The following delays will also begin timing:

• Shutdown Lockout Delay

• Warmup Delay (If selected)

•

If the frequency is sensed to be below the set point the fuel valve will turn on,

the multifunction output will turn on (if required – see MULTIFUNCTION
OUTPUT OPTIONS section) and cycle cranking will begin.

• During Cycle cranking, the Fuel Valve output is on continuously.

• If the Multifunction output is set to glowplug, the unit will first turn on the

output for the selected amount of time, turn it off then energize the start
output. If the unit does not start, the start output will be de-energized
through the rest delay and the run light will flash. When the rest delay
expires, the multifunction output will then be energized through the delay,
turn off, and the start output will be energized again. This sequence will
continue until the engine is sensed to start or OVERCRANK occurs.

• If the engine starts but then stalls, the ENGINE STALL LED will flash for
10 seconds. After the 10-second delay expires, the cycle cranking sequence
will continue. These “Engine Stalls” or “False Starts” are counted as crank
attempts.

• OVERCRANK – If the engine fails to start within the selected number of
crank attempts, the fuel output will be de-energized, the common fail
output will be energized and the OVERCRANK LED will light. Before the
module will attempt to start the engine again, this shutdown condition must
be reset by moving the selector switch to the OFF position and back to
AUTO.

• If the unit successfully starts the engine by cycle cranking, the starter
output will immediately be deenergized, the ENGINE RUNNING light will
turn on and the multifunction output will perform any necessary functions

(see MULTIFUNCTION OUTPUT OPTIONS section). The following
delays will begin timing:

• Shutdown Lockout Delay

• Warmup Delay (If selected)

• The following shutdown conditions are armed immediately:

• OVERSPEED

• LOW LEVEL

• Once the Shutdown lockout delay has timed out, the unit will arm the

following shutdowns:

• LOW OIL PRESSURE

• HIGH ENGINE TEMPERATURE

• AUXILIARY INPUT ONE

• NO SPEED SIGNAL

• When the start signal is removed or the stop signal is sensed the unit will

shutdown the engine. If the multifunction output is required to function at this
time it will (see MULTIFUNCTION OUTPUT OPTIONS section). When it is
ready for shutdown the fuel valve will be de-energized and the controller will
await another start signal.

SHUTDOWNS: If the controller senses any shutdown conditions while it is
running, the fuel output will be de-energized, the common fail output will be
energized and the appropriate shutdown LED will light. Before the module will
attempt to start the engine again, the unit must be reset by moving the selector
switch to the OFF position and back to the AUTO position.

Sequence of Operation with Panel in “MANUAL”

When the MANUAL-OFF-AUTO switch is placed in the “MANUAL” 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 monitored conditions or until the MANUAL-OFF-AUTO switch
is moved to the “AUTO” or “OFF” positions. There is no cooldown or airgate
feature available in the manual mode. Keep in mind; it will still shut down the
engine if a monitored condition occurs such as low oil pressure or high
temperature.

ASM170 I/O List

noitamrofnI lanoitiddAemaN erawdraHlebaL#NIP

1 rotareneG ro pukciP citengaM nruteR hcaT-ycneuqerF
2 suniM yrettaB-B)-B( dnuorG
3 Start (Manual) Input 1 Battery Plus Only
4 )tuO dekcoL toN–detavitca nehw no snruT tuptuO liaF nommoC ylnO( tupnI -/+6 tupnI1 tupnI xuA
5 mralA teseR otuA ro nwodtuhS 6WS tupnI -/+5 tupnIleveL
6 High Temperature Input 3 +/- Input
7 Engine Run Out Output 5 125 mA Sinking
8 dnuorg ot sknis nip siht ,evitca si 6 tupnI nehW-gnikniSAm 5216 tuptuOdesU toN
9 pukooH oNrewoPTEFenoN

pukooH oNrewoPTEFenoN01

11 rotareneG ro pukciP citengaMhcaT+ ycneuqerF

AOM fo noitisoP otuA)+( yrettaBotuA21
13 Low Oil Pressure Input 2 +/- Input
14 Aux Input 1/Remote Stop Input 4 +/- Input
15 Multifunction Output Output 3 5 AMP FET
16 Common Shutdown Output Output 4 125 mA Sinking
17 Crank Output Output 1 5 AMP FET

TEFPMA 012 tuptuOtuptuO leuF81
pukooH oNrewoPTEFenoN 91
pukooH oNrewoPTEFenoN02

Blade FET Common FET Power Push On for FET Supply Power (20 AMPS)

R

E

G

I

S

T

E

R

E

D

USA–ISO 9001:2000 FM 28221

UK–ISO 9001:2000 FM 29422

Printed in U.S.A.

M

ur

C

al

c

CALL MURCAL TO PLACE YOUR ORDER

P: (6 6 1) 2 72 -4 7 00 F :( 66 1 )9 4 7- 75 7 0

w w w . m u r c a l . c o m e - m a i l : s a l e s @ m u r c a l . c o m