GAC ESD5340 Manuale - Pagina 7

Sfoglia online o scarica il pdf Manuale per Unità di controllo GAC ESD5340. GAC ESD5340 9. Speed control unit

ADDITIONAl FEATURES (CONTINUED)

aDJUSTaBLe cHoPPInG freQUencY

The actuator chopping frequency can be varied using the potentiometer labeled CF ADJ. This

chopping frequency applied to the actuator provides an additional stability enhancement as

the dither shakes the actuator to overcome static friction and ensure its immediate response.

overSPeeD monITor

The overspeed monitor circuit trip point is set by the multi-turn potentiometer.

•

Set overspeed by raising the engine speed to the specific trip point speed and turning

the OVeRSPeeD adjustment CCW until the overspeed circuit turns ON (Red leD).

This will also turn off the actuator output circuit and change the state of the internal

relay contacts at Terminals 1, 2, 3.

•

To reset the overspeed circuit, push the ReSeT switch through the hole provided or

cycle the DC power to the unit. The Test switch will reduce the overspeed setting about

20%. If the engine is running at rated speed and the Test button is pushed the over-

speed monitor circuit should trip.

The relay contacts at Terminals 1, 2, 3 should be used to turn off the engine, either fuel or

air.

Do not rely on time control to turn off the actuator as a means of shutting off the

engine. A fault could have occurred in the actuator, linkage, cables, etc. which the

eSD5300 does not control.

cranK TermInaTIon

When no power is applied to the eSD5300, the crank relay contacts, Terminals 5 and 6,

are normally closed.

As the speed increases, the internal relay will change state and the green leD will light.

The speed setting at which the leD lights is determined by the multi-turn CRANK TeRMI-

NATION speed setting potentiometer.

Adjust CRANK TeRMINATION CW to increase the speed at which this transition takes

place.

Once the circuit has tripped, the crank termination circuit will remain tripped until DC power

is removed from the unit. This will reset the function.

fInaL SPeeD SeTTInG

After the Droop, Frequency Trim, and/or accessory inputs have been connected, readjust the operating SPeeD and IDle.

ESD5300 Speed Control Unit 09-2020-H

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