GAC ESD5300 Series Manuel - Sayfa 8

Kontrol Ünitesi GAC ESD5300 Series için çevrimiçi göz atın veya pdf Manuel indirin. GAC ESD5300 Series 9 sayfaları. Speed control unit

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ADDITIONAl FEATURES (CONTINUED)

acceSSorY InPUT

The AUXiliary input, Terminal M. directly accepts output signals from GAC load Sharing units, Auto Synchronizers and other governor

system accessories. Consult the applicable GAC publications for details. It is recommended that this connection from accessories be a

shielded cable as it is a sensitive input terminal.

If the GAC Auto Synchronizer is used alone, not in conjunction with a load Sharing Module, a resistor must be installed be-

noTe

tween Terminals M and L. If a frequency trim potentiometer is also used, the resistor should be 910 K Ω. If no frequency trim is

used, the resistor should be 1.2M Ω. This is required to match the voltage levels between the ESD5300 speed controller and

the synchronizer.

acceSSorY SUPPLY

The +10 V regulated supply, Terminal l, can be utilized to provide power to GAC governor system accessories. Up to 40 mA of current

can be drawn from this supply. The ground reference for this supply is Terminal G.

SYSTEm TROUBlEShOOTINg

SYSTem InoPeraTIve

If the engine governing system does not function, the fault may be determined by performing the voltage tests described in Steps 1

through 3. Positive (+) and negative (-) refer to meter polarity. Should normal values be indicated during troubleshooting steps, then the

fault may be with the actuator or the wiring to the actuator. Tests are performed with battery power on and the engine off, except where

noted. See your actuator publication for the testing procedure for that actuator.

normaL reaD-

STeP

WIreS

D(+)&C(-)

Battery Supply

Voltage

e & F

1.0 V AC RMS min.

while cranking

l(+)&G(-)

10 VDC,

Internal Supply

A(+)&C(-)

2.0 V less than bat-

tery voltage while

cranking

InG

DC battery power not connected. Check for blown fuse

low battery voltage

Wiring error

Gap between speed sensor and gear teeth too great. Check Gap

Improper or defective wiring to the speed sensor. Resistance between 3 and Ground should be 160

to 1200 ohms. See your specific magnetic pickup data for resistance.

Defective speed sensor.

Short on Terminal P. ( This will cause a defective unit)

Defective speed control unit

Starting FUel lIMIT set too low.

IDle set too low.

SPeeD adjustment set too low.

Wiring error to the actuator.

Defective speed control.

Defective actuator.

conversion formulas

(RPM x #Teeth)

Hertz

MAG PICKUP

60sec

(Hertz

MAG PICKUP

RPM =

#Teeth

ProBaBLe caUSe of

aBnormaL reaDInG

ESD5300 Speed Control Unit 09-2020-H

x 60sec)

PIB1041