GAC ESD5528 Quick Start Manual - Page 5

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OPERATION

One of two methods of operation for the ESD5500-II may be now selected.

•

Method 1: Start the engine and accelerate directly to the operating speed (Generator Sets, etc.).

•

Method 2: Start the engine and maintain at an idle speed for a period of time prior to accelerating to the operating speed. This method

separates the starting process so that each may be optimized for the lowest smoke emissions.

Start the engine and accelerate directly to the operating speed

meTHoD 1

1. Remove the connection between Terminals M and G.

2. Start the engine and adjust the Speed/Fuel Ramp for the least smoke during

acceleration to rated speed and to prevent overshoot

3. If the starting smoke is excessive, adjust the Start Fuel slightly CCW.

4. If the starting time is too long, adjust the Start Fuel slightly CW.

Start the engine and maintain at an idle speed for a period of time prior to accelerating to the operating speed.

meTHoD 2

Replace the connection between Terminals M and G with a switch, usually an

oil pressure switch or toggle switch.

Start the engine.

If the starting smoke is excessive, the Start Fuel may need to be adjusted

slightly CCW.

If the starting time is too long, the Starting Fuel may need to be adjusted

slightly CW.

When the switch opens, adjust the Speed Ramping for the least amount

of smoke when accelerating from idle speed to rated speed or to prevent

overshoot.

ADJUSTING FOR GAIN AND STABILITY

Once the engine is running at operating speed and at no load, the following governor performance adjustments can be made to increase

engine stability.

STaBILITY aDJUSTmenT

ParameTer

ProceDUre

Gain

Rotate the Gain adjustment clockwise until instability devel-

ops.

Then, gradually move the adjustment counterclockwise until

stability returns.

Move the adjustment one division further counterclockwise to

ensure stable performance (270° potentiometer).

If instability persists, adjust the next parameter.

Stability

Follow the same adjustment procedure, steps 1 - 3, as the Gain

parameter.

ProceDUre

Start

Fuel

noTe

Idle speed must be set below operating speed.

Gain

Normally, adjustments made at no load achieve

noTe

satisfactory performance. If further performance im-

provements are required, refer to Section 11, SYS-

TEM TROUBLESHOOTING.

ESD5500-II Fusion Series Speed Control Unit 1-2020-A4

Speed/Fuel

Ramp

Stability

PIB2180