Daewoo ST Series Instruções de Operação descarregar pdf (Página 133)

Caution :

An overspeed shutdown device, independent of the governor system, should be provided to

prevent loss of engine control which may cause personal injury or equipment damage. Do not

rely exclusively on the governor system electric actuator to prevent overspeed. A secondary

shutoff device, such as a fuel solenoid must be used.

e) Functions of the Control unit

1. STARTING FUEL : When starting engine at first, it controls the amount of starting fuel. If you

turn it clockwise, the amount of fuel increases.

2. SPEED RAMPING : It controls time to be taken for the max. speed. If you turn it counter

clockwise, the time to be reached the rating speed is reduced.

3. IDLE : Adjust the idle speed of the engine. If the engine rotates clockwise, the

speed of the engine increases.

4. GAIN : It makes fluctuant rate of speed which generated from engine stable.

5. STABILITY : It makes fluctuant rate of speed according to the engine mounting stable.

6. SPEED : Adjust the engine speed. If engine rotates clockwise, engine speed

increases.

7. OVER SPEED : Adjust engine over speed. If engine rotates clockwise, engine speed

increases.

8. DROOP SPEED : It is used in parallel operation of generator.

9. RESET : It is used for initializing the over speed controller.

10. TEST : It is used for confirming and setting the over speed.

11. A, B TERMINAL : They are connected with actuator of the injection pump.

12. C, D TERMINAL : They are connected with magnetic pickup sensor, shield wire should be

used. Don’t use magnetic pickup sensor connected with them for other

purpose.

13. E, F TERMINAL : They are connected with battery (E - polar, F + polar)

14. G,M TERMINAL : They are terminals for maintaining the idle speed.

15. K, L TERMINAL : They are terminals for droop.

16. H, J, N, P TERMINAL : They are subsidiary terminals.

f) Wiring

Basic electrical connections are illustrated above. Actuator and battery connections to Terminals A,

B, E, and F should be #16AWG (1.3 mm

) or larger.

Long cables require an increased wire size to minimize voltage drops.

The battery positive (+) input, Terminal F, should be fused for 15 amps as illustrated.

Magnetic speed sensor connections to Terminals C and D MUST BE TWISTED AND/OR

SHIELDED for their entire length. The speed sensor cable shield should only be connected to

terminal D. The shield should be insulated to insure no other part of the shield comes in contact

with engine ground, otherwise stray speed signals may be introduced to the speed control unit. With

the engine stopped,

adjust the gap between the magnetic speed sensor and the ring gear teeth. The gap should not be

any smaller than 0.020 in, (0.45 mm). Usually, backing out the speed sensor 3/4 turn after touching

the ring gear tooth will achieve a satisfactory air gap. The magnetic speed sensor voltage should

be at least 1 VAC RMS during cranking.

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Daewoo ST Series Instruções de Operação Página 133

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