Murphy Network Card ST8 User Manual

ST-94112N  
Revised 07-04  
Section 25  
Installation and Operation Instructions for  
(00-02-0758)  
®
®
SELECTRONIC TATTLETALE Annunciator  
Model ST8  
Please read the following information before installing. A visual inspection of this product for damage during shipping is rec-  
ommended 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.  
Certain danger to human safety and to equipment may  
occur if some equipment is stopped without pre-warning.  
It is recommended that monitored functions be limited to  
alarm-only or to alarm before shutdown.  
Specifications  
All specifications apply to both models unless indicated.  
Description  
Power Input (Operating Voltage): 8–32 VAC, 8–40 VDC  
The ST8 is an eight point TATTLETALE® panel designed to give “first out”  
Sensor Inputs: 8 sensor switches, normally open or  
indication of cause of alarm or shutdown. This “first out” feature means  
normally closed dry contacts.  
that only the first fault will be shown by LED; this feature isolates the  
Number of Alarm Points: ST8: 8 first out shutdown/alarm.  
primary cause of shutdown, and helps simplify troubleshooting. The  
Lockout Time Delay During Startup:  
ST8 is available in two different types of mounting: flush mounting  
25 to 35 seconds (selectable for each sensor input).  
(“F”), and gimbal mounting (“G”).  
DIMENSIONS  
ST8-F  
5-11/16 in.  
(144 mm)  
ST8-G  
2-7/8 in.  
(73 mm)  
Clearance  
2-3/16 in.  
(56 mm)  
6-3/8 in.  
(162 mm)  
5-7/8 in.  
(149 mm)  
Gimbal  
Mounting  
Bracket  
5-3/8 in.  
(137 mm)  
1-3/4 in.  
(44 mm)  
ST-94112N page 1 of 4  
 
ELECTRICAL  
The Figures below show typical customer switch wiring for the ST8. metal link must be removed to use this wiring. When the switch  
Switch wiring should be run separately from other wires; DO NOT  
route switch wires with AC power wires since voltages, that may  
be induced into the switch wires, may exceed rating and cause  
damage to circuits or cause false trips.  
opens the shutdown/alarm will be initiated.  
Figure 3 shows the wiring for a N.O. SWICHGAGE® which is the  
same as Figure 1 except two wires are run from terminals A and B to  
the SWICHGAGE®. This Closed Loop™ wiring circuit monitors the  
wires as well as the switch. If the circuit is opened due to a loose  
Figure 1 shows the wiring for a normally open (N.O.) SWICH-  
GAGE® connected between terminal B and the negative power input. connection or broken wire or the SWICHGAGE® closes, the shut-  
A metal jumper is connected between A and B. When the SWICH-  
GAGE® closes the shutdown/alarm circuit will be initiated.  
down/alarm circuit will be initiated.  
Figure 4 shows the ST8 internal SPDT relay in the “run” or operat-  
Figure 2 shows the wiring for a normally closed (N.C.) switch  
ing mode.  
connected to input terminals A and B. The factory installed  
9
10 11  
N.O. N.C.  
C
A
A
A
B
B
B
Figure 1: Typical N.O.  
Sensor Connection  
Figure 2: Typical N.C.  
Sensor Connection  
Figure 3: Typical N.O.  
Closed Loop™ Sensor Connection  
Figure 4: Internal Relay  
Circuit  
Typical Wiring  
Below is a typical wiring diagram for the ST8 TATTLETALE®.  
Start  
Pushbutton  
Flyback  
Diode  
To Hold Coil  
Flyback Diode  
To Battery +  
Starter  
Motor  
Flyback  
Diode  
Coil  
Distributor  
Flyback  
Diode  
To Pull-in Coil  
Push/Pull Solenoid  
Slave Relay  
Solenoid Valve  
NOTE: Connect only one shutdown  
device to the ST8. Wiring  
for Push/Pull Solenoid, Solenoid Valve  
and Slave Relay shown for clarity only.  
ON/OFF  
Switch  
Battery  
2 Amp  
Fuse  
Remove jumper from  
terminals 12 and 13 and  
set individual sensor Lockout  
Switch for a 25 to 35 second  
lockout time delay during  
startup (see page 4  
9 10 11 12 13 14  
Engine Oil  
Pressure  
Internal Relay  
(shown in  
run mode)  
Setting Lockout Switches).  
Jumper Wire  
ST8  
Shutdown  
Sensor Inputs  
Engine Water  
Temperature  
(customer supplied)  
A
A
B
5
6
7
1
2
3
B
A
B
A
B
Low  
Water  
Level  
A
B
A
B
ST8  
Shutdown  
Sensor Inputs  
A
B
A
B
8
4
No Connection  
No Connection  
No Connection  
No Connection  
ON  
1
2
3
4
5
6
7
8
Differential  
Pressure  
Sensor Lockout Switches  
ST-94112N page 3 of 4  
 
BASIC OPERATION  
ST8  
Setting Lockout Switches  
1. Apply power to the ST8 TATTLETALE® (terminals 13 and 14).  
Lockout switches allow you to lockout shutdown/alarm sensors during  
startup. For instance, on a pressure SWICHGAGE®, the lockout time  
delay allows time for pressure to build up thus lifting the pointer off the  
low limit contact. If the lockout time delay is not set the TATTLE-  
TALE® will initiate the shutdown/alarm sequence.  
2. The “POWER ON” and “RUN” LED light will switch On. The  
“POWER ON” LED indicates power has been applied to the ST8.  
The “RUN” LED indicates the internal relay is in the  
operating mode.  
Each sensor input on the ST8 has a lockout  
time delay at startup with a length of 25 to  
35 seconds.  
1. Locate the lockout switches on back  
3. The lockout time delay during startup will begin timing. Sensors with  
lockout time delay selected (see Setting Lockout Switches below) will  
not trip alarm or shutdown circuit until time delay times out (25-35  
seconds). If lockout switches are not set there will not be a time  
delay during startup.  
Lockout  
Switches  
ON  
of the unit (see Figure 7).  
2. Determine which sensors you wish  
to lock out. Switch the corresponding  
sensor lockout switch “ON”. A SEN-  
SOR CAN BE LOCKED-OUT  
ONLY WHEN ITS LOCKOUT  
SWITCH IS SWITCHED “ON”.  
3. Remove the jumper between terminals 12 and 13. This will activate  
the time delay. If this jumper is not removed the lockout time delay  
will not function.  
1 2 3 4 5 6 7 8  
4. The 8 Red shutdown LEDs are for shutdown indication (see  
Figure 6).  
5. When a shutdown signal is received from a SWICHGAGE®, the  
shutdown LED will light and internal shutdown relay will switch to  
activate a shutdown device (see Typical Wiring page 3). All other  
shutdown sensor inputs are locked out.  
On back  
of unit  
Figure 7  
6. Shutdown LED will remain on even if conditions return to normal.  
To clear the LED, power must be removed or push button reset  
is operated.  
Warranty  
A limited warranty on materials and workmanship is given with this FW Murphy product.  
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  
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  
Tulsa, Oklahoma 74147 USA  
+1 918 317 4100  
fax +1 918 317 4266  
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.  
ST-94112N page 4 of 4  
 

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