Murphy Switch AS3000 User Manual

AS3000-02127B  
Revised 05-03  
Catalog Section 75  
(00-02-0525)  
Automatic Engine Controller  
FWMurphy  
AS3000 Model  
Auto crank disconnect  
Multi-attempt starting  
Fault warning and shutdown  
Reduced panel wiring  
Simple set set-up  
Lamp test: Close to negative DC (±3V)  
to activate.  
Description  
Easy setup of operating options using circuit  
board links.  
The AS3000 provides automatic start up, fault mon-  
itoring and shutdown control for engine driven  
applications. The unique two-module design, with a  
single interconnecting lead, gives reduced panel  
wiring and installation. This simple, compact unit is  
ideally suited to small engine and generator panels.  
DC input protection: ±50 VDC maximum.  
AC Inputs  
Generator AC Hz meter output, 0 – 5V.  
Product Specification  
Power supply  
Magnetic pickup: 3 – 60 VAC, 50Hz – 10 kHz.  
Generator AC: 600 VAC maximum (L-L or  
L-N), 50/60 Hz.  
Continuous voltage range: 8 – 35 VDC  
Key features  
Brown out voltage: < 5 VDC for 2 secs  
(recovery to 8V)  
Outputs  
Multi-attempt cranking with auto crank disconnect  
Fuel: positive DC (transistor), 5A max.  
Crank, preheat: positive DC (transistor),  
2A max.  
Common alarm, fault lockout: negative DC  
(transistor), 300mA max.  
Generator Hz. Meter: 0-1mA (@ 45 - 65 Hz).  
Automatic or manual modes, selected by front  
facia pushbuttons. Control inputs for optional  
security keyswitch.  
Blackout voltage: 0V for 50mS (from 10V,  
recovery to 5V)  
Overvoltage withstand: 50 VDC for 5 sec-  
onds (to SAEJ1810 load dump immunity)  
User inteface module: front of panel mounted,  
92mm square DIN cut-out. Environmental  
sealing to IP65  
Reverse voltage withstand:  
100 VDC continuous.  
Physical  
Panel interface module: DIN rail mounted  
PCB tray.  
Dimensions: see “System Overview” on page 2.  
Operating temperature: 14 to 149°F (-10 to  
+65°C).  
Relative humidity: 95% @ 140°F (60 °C).  
Environmental protection: AS3000 front:  
IP65, NEMA4.  
Back of User Interface and Panel interface  
require weather-proof enclosures for outdoor use.  
Vibration: ISO 88528 pt.9, & 3 axis 3g.  
Current consumption (standby): 50mA.  
Current consumption (max): 500mA (plus  
output loads).  
Fault shutdown and indication system. Low oil  
pressure, high coolant temperature and auxil-  
iary inputs are fitted to both modules, allowing  
use with engine mounted fault switches or  
panel mounted SWICHGAGE® units.  
DC Inputs  
Oil pressure, coolant temp, auxiliary and  
charger faults: Closed to negative DC  
(±3V) on fault.  
Speed sensing (auto crank disconnect and over-  
speed shutdown) is via magnetic pickup, gen-  
erator AC or remote contact. Speed calibration  
is automatic and adjustment free.  
Weight:  
Remote start positive: Open from positive  
DC to start.  
AS3000 User Interface: approx. 9 oz. (250g).  
AS300 Panel Interface: approx. 6 oz. (160g).  
Shipping Weight: 1 lb. 4 oz. (554 g.).  
Shipping Dimensions: 7-3/8 x 5 x 3-1/8 inch.  
(187 x 127 x 79 mm.).  
Remote start negative: Close to negative DC  
(±3V) to start.  
Mains charger/charge alternator fail warning LED.  
AS3000-02127B page 1 of 2  
 

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