
2301D/2301D-EC Digital Control
Manual 26247
98
Woodward
Symptom
Cause
Solution
Prime mover will not
stabilize at rated no load
speed. The instability
may occur at no load or it
may vary with load.
Control may be erratic
(continued).
Prime mover may not be receiving
fuel as called for by the actuator
voltage.
Check actuator linkage to fuel controlling
mechanism for any lost motion, binding, or
excessive loading. Verify a steady fuel
pressure of proper value.
Check actuator per appropriate
actuator manual.
Prime mover not operating
properly.
Prime mover may be causing speed
variations. Control engine manually to
determine if instability is in prime mover or
governor control. Verify proper adjustment
of fuel control linkage.
Input voltage low.
Check supply voltage. It should be at least
18 Vdc.
Prime mover does not
share load with other
units.
Prime mover not receiving fuel as
called for by the governor.
If voltage to actuator is maximum (minimum
for reverse acting), visually determine if
actuator shaft is at maximum position. If it is
not, an actuator problem is indicated, or the
linkage or fuel system is restricted.
Unequal speed settings.
Be sure that speed settings of all units at no
load are identical.
Unequal load gain voltages.
With the prime mover operating in single
unit configuration, LOAD GAIN must be set
at 6.0 Vdc. See LOAD GAIN
ADJUSTMENT in Chapter 4.
Circuit breaker auxiliary contact or
droop contact is open.
Check auxiliary circuit breaker and droop
contacts. Check for 20 to 40 Vdc from
terminal 30 to 34 on low voltage controls.
Improper load sensing phasing.
Perform phasing procedure in Chapter 4.
Circulating currents between
generators.
Refer to appropriate voltage regulator
manual.
Prime mover does not
maintain constant speed
(isochronous).
Actuator.
If actuator has a ballhead backup, verify
that its hydraulic governor section, speed
setting, and speed droop adjustments are
properly set (see the applicable governor
manual).
Prime mover.
If the droop occurs near the full-load point
only, it is possible the prime mover is not
producing the horsepower called for by the
fuel control, or is being overloaded. Either is
indicated if the fuel control is at maximum
position.
Содержание 2301D
Страница 12: ...2301D 2301D EC Digital Control Manual 26247 4 Woodward Figure 1 1a 2301D Outline Drawing Ordinary Locations ...
Страница 13: ...Manual 26247 2301D 2301D EC Digital Control Woodward 5 Figure 1 1b 2301D Outline Drawing Hazardous Locations ...
Страница 14: ...2301D 2301D EC Digital Control Manual 26247 6 Woodward Figure 1 2a 2301D Plant Wiring Diagram sheet 1 ...
Страница 16: ...2301D 2301D EC Digital Control Manual 26247 8 Woodward Figure 1 2c 2301D Plant Wiring Diagram notes ...
Страница 51: ...Manual 26247 2301D 2301D EC Digital Control Woodward 43 Figure 3 4 Typical Transient Response Curves ...
Страница 127: ...Manual 26247 2301D 2301D EC Digital Control Woodward 119 ...
Страница 129: ...Declarations ...