Murphy Switch HD9063 Series User Manual

HD-96044N  
Revised 03-01  
Section 20  
Installation and Operation Instructions for  
Dual Set Point Speed Switch  
HD9063 Series  
(00-02-0179)  
Please read the following information before installing. A visual inspection of this product for damage during shipping is recommended  
before mounting. It is your responsibility to have a qualified person install this unit and make sure it conforms to NEC and local codes.  
GENERAL INFORMATION  
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.  
Description  
Specifications  
Power Supply:  
Voltage: 8-30 VDC  
Maximum Current: 150 mA  
Frequency Signal:  
Voltage, Magnetic Pickup Signal Models  
The HD9063 Series is a unitized two set point speed switch with  
SPDT relay outputs. HD9063 is a PC-board configuration with  
standoffs for mounting in a control panel or cabinet.  
Models are available for crank disconnect/overspeed and for  
underspeed/overspeed applications. Trip points can be field  
adjusted on all models. LED’s next to the set point potentiometers  
indicate that the trip point has been reached and the relay(s) have  
operated. An overspeed test circuit is built-in; it will actuate the  
output relay at a point below actual overspeed set point.  
Minimum: 0.35 Vrms  
Maximum: 60 Vrms  
Maximum Current, Magnetic Pickup Signal Models: 4.8 µA.  
Adjustment Range, Magnetic Pickup Signal Models  
HD9063 Model  
The HD9063 can disconnect the starter on automatic start engine  
applications and shutdown the engine if an overspeed situation  
occurs. Re-engagement of the starter is inhibited until RPM  
returns virtually to zero.  
Crank Disconnect: 250-6,000 Hz  
Overspeed: 1,100-10,000 Hz  
HD9063-USOS Model  
Underspeed: 200-5,800 Hz  
Overspeed: 1,100-10,000 Hz  
HD9063-USOS models allow operation of control circuits  
according to the speed of the driver or as a pre-alarm.  
Two separate adjustable speed switches are included on one  
common board.  
Reset Differential, Magnetic Pickup Signal Models  
HD9063 Model  
Crank Disconnect: Dropout 160 Hz ± 5%  
Overspeed: 200 Hz Differential  
HD9063-USOS Model  
Underspeed: +5% of Set point Differential  
Overspeed: 155 Hz ± 10% Differential  
Output: Relay Contact, SPDT, Resistive Load: (2) 5 A, 30 VDC  
Adjustment: (2) 270°–turn potentiometer  
Temperature Range: 14 to 158°F (-10 to 70°C)  
HD-96044N page 1 of 4  
 
WIRING  
CAUTION: PERFORM THE WIRING OPERATION WITH THE POWER SOURCE “OFF”  
1. Connect terminal 5 on the HD9063 to engine ground and  
connect terminal 4 to battery positive (see Figure 3).  
(+) ( ) (+) ( )  
1
2
3
4
5
6
7
8
9 10 11 12  
K1  
K2  
2. Connect the magnetic pickup cable conductors to terminals  
12  
6 and 7.  
To Engine  
Crank Control  
Circuit  
3. If cable is shielded, connect shield to engine chassis ground.  
Common  
Common  
4. If desired, connect a normally open test push button switch  
between terminals 8 and 9.  
To  
Normally Open  
Normally Closed  
Normally Open  
or  
Shutdown  
Circuits  
to Shutdown  
Circuits  
(HD9063-USOS)  
Normally Closed  
5. Connect crank disconnect circuit to crank disconnect termi-  
nals 1 thru 3 as discussed in Crank Disconnect Relay  
Function, page 2. On HD9063-USOS models connect the  
overspeed circuits 1 thru 3 as discussed in Overspeed Relay  
and Underspeed Relay Function, page 2.  
6. Connect the overspeed circuits to overspeed terminals 10 thru  
12 as discussed in Overspeed Relay and Underspeed Relay  
Function, page 2.  
Test  
Pushbutton  
DC Positive  
DC Negative  
(Engine Ground)  
From Magnetic Pickup  
Figure 3  
MAGNETIC PICKUP INSTALLATION  
A magnetic pickup is an AC generator. It is normally installed  
into the flywheel housing of an internal combustion engine, so  
that the starter ring gear acts upon it to generate a voltage pulse  
each time a gear tooth passes the end of the sensor.  
Gap Chart  
THREAD  
SIZE  
TURN  
1/2  
1/4  
3/4  
1
Magnetic Pickup Installation (see Figure 5)  
Drill and tap a hole in the flywheel housing (See Specifications  
Chart below for model and thread size). IMPORTANT: Drilling  
too deep may damage ring gear teeth. Blow chips with air hose  
when drilling and tapping hole.  
.013 in.  
(0.33 mm) (0.71 mm)  
.015 in. .030 in.  
.028 in.  
.035 in.  
(0.88 mm) (1.39 mm)  
.045 in. .062 in.  
.055 in.  
5/8-18 UNF  
3/4-16 UNF  
(0.38 mm) (0.76 mm) (1.14 mm) (1.57 mm)  
Always use a two-conductor shielded cable. Ground the  
shield to a metal frame ground at the engine end only.  
Gap Adjustment  
Insert magnetic pickup and turn until it stops at the face of the gear.  
Back-off the gear by turning the pickup counterclock-  
Never run these wires  
next to spark plug wires  
or in wire loom with other  
wires carrying inductive  
loads or alternating current.  
wise 1/4, 1/2, or 3/4 turn (Figure 4)  
.
See Gap Chart (above, right) to determine gap  
distance based on the turn. Check gap clear-  
ance by rotating the gear completely around.  
1/4  
1/2  
After adjusting,  
set locknut.  
NOTE: Magnetic pickup gap should be  
3/4  
Drill and tap casing  
(see thread sizes in  
Specifications).  
adjusted so that the minimum voltage required  
is attained at the engines lowest RPM. The  
voltage will increase as the speed increases.  
AC  
Meter  
Figure 4  
If erratic readings occur, remove magnetic  
pickup and check the magnetic tip for metal chips.  
Gap  
(see Gap Chart)  
Casing  
Murphy Magnetic Pickup Specifications Chart  
Pickup  
Model  
Total  
Length  
Threaded  
Length  
Thread  
Size  
Gear (must be made  
of magnetic material).  
NOTE: Clean gear casing  
and magnetic sensor  
MP3298*  
MP7906†  
MP7905††  
3 in. (76 mm)  
3 in. (76 mm)  
5/8-18 UNF  
3/4-16 UNF  
3/4-16 UNF  
of metal chips or filings.  
3 in. (76 mm)  
3 in. (76 mm)  
4-1/2 in. (114 mm)  
4-1/2 in. (114 mm)  
Figure 5  
*
Replaces 20-01-0080 and MP100. Lead wire hookup (12 in. [305 mm]).  
Replaces 20-01-0081. Lead wire hookup (12 in. [305 mm]).  
††Replaces 20-01-0082. Lead wire hookup (12 in. [305 mm]).  
HD-96044N page 3 of 4  
 
ADJUSTING THE SPEED SWITCH  
Adjustment of the Dual Set point Speed Switch is performed  
Overspeed and Underspeed  
Set Point Adjustment  
OVERSPEED  
when the system is otherwise operational in all respects.  
See Figure 6 for location of Crank Disconnect, Underspeed and  
Overspeed potentiometers.  
1. Loosen locknut on Overspeed set point potentiometer and turn  
potentiometer fully clockwise.  
Crank Disconnect  
Potentiometer  
Underspeed Potentiometer  
(HD9063-USOS)  
or  
2. Start engine and run at highest normal operating RPM.  
Overspeed Potentiometer  
3. Slowly turn Overspeed adjustment potentiometer counter-  
clockwise until overspeed switch trips or engine shuts down.  
The LED light should flash.  
E
E
Crank  
Overspeed  
LED  
Disconnect  
or  
EXT.  
MAG.  
PICKUP  
4. Turn potentiometer approximately 2° clockwise, then  
Underspeed  
LED  
EXT.  
TEST  
NC  
NC  
tighten locknut.  
NO  
C
NO  
C
EXT.  
POWER  
(+) ( ) (+) (  
)
5. Reset switches as applicable and restart engine.  
1
2
3
4
5
6
7
8
9
10 11 12  
NOTE: An overspeed test switch connected as shown in Figure 3  
provides a means for decreasing set point for test purposes.  
Figure 6  
6. If a test push button is installed, press push button and verify  
that overspeed LED (Figure 6) flashes and engine shuts down  
or switch trips.  
Crank Disconnect Set Point Adjustment  
1. If engine serves as a backup for an electric pump or other  
motor driven device, turn off the associated electric motor.  
UNDERSPEED  
2. Reset any associated switches.  
NOTE: Underspeed is available on HD9063-USOS models only.  
3. Ground engine ignition system or shut off fuel to engine to dis-  
1. Loosen locknut on Underspeed set point potentiometer and turn  
able engine from starting.  
potentiometer fully counterclockwise.  
4. Loosen locknut on Crank Disconnect set point potentiometer  
2. Start engine and run at lowest normal operating RPM.  
and turn potentiometer fully clockwise.  
3. Slowly turn Underspeed adjustment potentiometer clockwise  
until underspeed switch trips or engine shuts down. The LED  
light should flash.  
5. Operate electrical switch(es) as appropriate so that engine will  
begin to crank.  
6. While engine is cranking, slowly turn Crank Disconnect Set  
point potentiometer counterclockwise until Crank Disconnect  
LED lights (Figure 6). Engine should stop cranking.  
4. Turn potentiometer approximately 2° counterclockwise, then  
tighten locknut.  
5. Reset switches as applicable and restart engine.  
7. Now turn the potentiometer clockwise 1/16 turn.  
NOTE: An overspeed test switch connected as shown in Figure 3  
provides a means for decreasing set point for test purposes.  
8. Enable engine and allow it to start, verifying that starter disengages.  
If starter motor stays engaged too long, lower set point slightly  
by turning potentiometer counterclockwise in increments of no  
more than 1/16 turn. Re-test after each adjustment by starting  
engine, and continue adjustment until starter disconnects as  
soon as engine starts.  
6. If overspeed test push button is installed, press push button and  
verify that overspeed LED (Figure 6) flashes and engine shuts  
down or switch trips.  
If starter motor does not stay engaged long enough, raise set  
point slightly by turning potentiometer clockwise in increments  
of 1/16 turn. Re-test after each adjustment.  
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  
9. Tighten locknut on Crank Disconnect set point potentiometer.  
NOTE: A starter protection feature prevents starter from being  
engaged until engine almost completely stops after running.  
CONTROL SYSTEMS & SERVICES DIVISION  
P.O. Box 1819; Rosenberg, Texas 77471; USA  
+1 281 633 4500 fax +1 281 633 4588  
FRANK W. MURPHY, LTD.  
Church Rd.; Laverstock, Salisbury SP1 1QZ; U.K.  
+44 1722 410055 fax +44 1722 410088  
MACQUARRIE CORPORATION  
1620 Hume Highway  
Campbellfield, Vic 3061; Australia  
+61 3 9358 5555 fax +61 3 9358 5558  
FW Murphy  
P.O. Box 470248  
Tulsa, Oklahoma 74147 USA  
+1 918 317 4100  
fax +1 918 317 4266  
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  
MURPHY SWITCH OF CALIFORNIA  
41343 12th Street West  
Palmdale, California 93551-1442; USA  
+1 661 272 4700 fax +1 661 947 7570  
USA–ISO 9001:2000 FM 28221  
UK–ISO 9001:2000 FM 29422  
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.  
Printed in U.S.A.  
HD-96044N page 4 of 4  
 

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