GAC ESD-5556 기술 정보 - 페이지 12

{카테고리_이름} GAC ESD-5556에 대한 기술 정보을 온라인으로 검색하거나 PDF를 다운로드하세요. GAC ESD-5556 12 페이지. Speed control unit

Slow instability can have many causes. Adjustment of the GAIN and STABILITY usually cures

most situations by matching the speed control unit dynamics. If this is unsuccessful, the dead time

compensation can be modified. Add a capacitor from posts E2 to E3 (negative on E2). Post

locations are illustrated in Diagram 1. Start with 10 mfds. and increase until instability is

eliminated. The control system can also be optimized for best performance by following this

procedure.

If slow instability is unaffected by this procedure, evaluate the fuel system and engine

performance. Check the fuel system linkage for binding, high friction, or poor linkage. Be sure to

check linkage during engine operation. Also look at the engine fuel system. Irregularities with

carburetion or fuel injection systems can change engine power with a constant throttle setting.

This can result in speed deviations beyond the control of the governor system. Adding a small

amount of droop (Jumper K-L) can help stabilize the system for troubleshooting.

NON-PERIODIC instability should respond to the GAIN control. If increasing the gain reduces the

instability, then the problem is probably with the engine. Higher gain allows the governor to

respond faster and correct for disturbance. Look for engine misfirings, an erratic fuel system, or

load changes on the engine generator set voltage regulator. If the throttle is slightly erratic, but

performance is fast, move switch C1 to the "OFF" position. This will tend to steady the system.

If unsuccessful in solving instability, contact for assistance.

In order to be compliance with the CE directives, the installer is obligated to install the

equipment in strict accordance with the following guidelines.

The Speed Control Unit must be mounted against the metal ground plane with four bolts which make

a positive electrical connections between the case and the back plane or a backing plate, PL128 must

be installed.

The magnetic pickup must be connected to the speed control using shielded cable as shown in the

wiring diagrams.

All shielded cable connections to the speed control must be connected to the case at the corner

threaded connection per the wiring diagram.

The BATTERY minus connection at Terminal E must also be additionally jumpered to the case at the

corner.

Shielded cable for the actuator is recommended to minimize the actuator's slight movement during

fast voltage transients. The installer's choice of not using shielded cable may cause the actuator to

move more than slightly during these transients. However, no failures should be experienced.

The installer must refer to the wiring diagram in the literature for proper electrical connects.

Technical Information