Woodward 9907-026, Руководство по эксплуатации продукта

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Load Sharing Module (Analog Output) Manual 02029
20 Woodward
Symptoms Cause Test/Remedy
Load Signal
voltage is low.
Adjusting LOAD
GAIN won't raise
it. Incorrect phasing of CT and
PT wiring.
Insufficient CT output. Perform phasing check. If phasing
check indicates need, perform
procedure for correcting phase
wiring.
Check for 5 amp CT output at full
load. (CT must be between 3 and 7
amps at full load.) Change to a lower
primary current CT.
Load Signal
voltage is too high.
Adjusting LOAD
GAIN won't lower
it. CT output too high. Check for 5 amp CT output at full
load. (CT must be between 3 and 7
amps at full load.) Change to a
higher primary current CT.
Engine does not
properly share
load with other
units. 1. Engine not receiving fuel
as called for by governor.
2. Unequal speed settings.
3. Unequal load gain
voltages.
4. Improper load sensing
phasing.
5. Circulating currents
between generators (noted
by unequal power factors
between generators). Check for maximum voltage to the
actuator. If voltage to the actuator is
correct but the actuator output shaft
is not at maximum position, an
actuator or speed control problem is
indicated, or the linkage or fuel
system is restricted.
Be sure that speed settings of all
units at no load are identical. Adjust
as necessary.
Check that load gain setting of all
load sharing units is correct. See
Load Gain Adjustment in Chapter 3.
Adjust as necessary.
Perform the transformer Phasing
Check in Chapter 3. Correct wiring
as necessary.
Properly adjust the generator voltage
controls.
Engine does not
properly share
load with other
units. Terminals 13 and 14 not
shorted. Load Sensor in
droop. Jumper Load Sensor terminals 13
and 14. Observe engine operation.
Replace wiring or switch as required.