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
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