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Manual 35018V1
505XT Digital Control System for Steam Turbines
Woodward
125
RATED SETPOINT (rpm)
dflt= 3600 (0.0, 20000)
Enter the Rated Speed set point desired. This is the speed control set point that the unit accelerates
to when using the Idle/Rated function.
(Must be greater than or equal to the ‘Minimum Governor Speed’ Setting)
IDLE/RATED COLD RATE (rpm
/s
)
dflt= 5.0 (0.01, 2000)
Enter the Idle/Rated cold rate (rpm/second). This is the at which the speed set point moves between
Idle and Rated speed set points when using the Idle/Rated commands and a COLD start is
determined by the Hot/Cold start timer or temperature analog inputs if configured/used.
IDLE/RATED WARM RATE (rpm
/s
)
dflt= 5.0 (0.01, 2000)
Enter the Idle/Rated warm rate (rpm/second). This is the at which the speed set point moves
between Idle and Rated speed set points when using the Idle/Rated commands and a WARM start
is determined by the temperature analog inputs if configured/used. The warm condition is only
available when using temperature analog inputs.
IDLE/RATED HOT RATE (rpm
/s
)
dflt= 5.0 (0.01, 2000)
Enter the Idle/Rated rate (rpm/second). This is the at which the speed set point moves between Idle
and Rated speed set points when using the Idle/Rated commands and a HOT start is determined by
the Hot/Cold start timer or temperature analog inputs if configured/used..
LOW IDLE SETPT (rpm)
dflt= 1000 (0.0, 20000)
Enter the Low Idle Speed Setting. This is the first hold speed when using the automatic start
sequence. The speed set point will remain at this setting until the low idle delay/hold time has
expired.
LOW IDLE DELAY TIME—COLD (MINUTES)
dflt= 1.0 (0.0, 500)
Enter the cold start hold time desired at low idle. This is the programmable time, in minutes, that the
turbine will wait/hold at the low idle speed when a cold start is determined.
LOW IDLE DELAY TIME—WARM (MINUTES)
dflt= 1.0 (0.0, 500)
Enter the warm start hold time desired at low idle. This is the programmable time, in minutes, that the
turbine will wait/hold at the low idle speed when a warm start is determined. The warm condition is
only available when using temperature analog inputs.
LOW IDLE DELAY TIME- HOT (MINUTES)
dflt= 1.0 (0.0, 500)
Enter the hot start hold time at low idle. This is the programmable time, in minutes/seconds, that the
turbine will wait/hold at the low idle speed when a hot start is determined. If the turbine has been
shutdown for longer than the Hot time but shorter than the Cold time, the control will interpolate
between the Hot and Cold delays to determine the low idle hold time.
Use IDLE 2?
dflt= False
When TRUE, the speed reference will ramp to Idle 2 level when timer is passed.
When FALSE is selected, the speed reference will go to rated speed.
RATE TO IDLE 2—COLD (rpm/s)
dflt= 5.0 (0.01, 500)
Enter the cold start rate to Idle 2. This is the programmable rate, in rpm per second, that the speed
set point will accelerate at when moving to high idle when a cold start is determined.
RATE TO IDLE 2—WARM (rpm/s)
dflt= 5.0 (0.01, 500)
Enter the warm start rate to Idle 2. This is the programmable rate, in rpm per second, that the speed
set point will accelerate at when moving to high idle when a warm start is determined. The warm
condition is only available when using temperature analog inputs.
RATE TO IDLE 2—HOT (rpm/s)
dflt= 5.0 (0.01, 500)
Enter the hot start rate to Idle 2. This is the programmable rate, in rpm per second, that the speed
set point will accelerate at when moving to Idle 2 when a hot start is determined. If the turbine has
been shutdown for longer than the Hot time but shorter than the Cold time, the control will interpolate
between the Hot and Cold rates to determine the acceleration rate to the Idle 2 set point.
IDLE 2 SETPT (rpm)
dflt= 1100 (0.0, 20000)
Enter the Idle 2 Speed Setting. This is the second hold speed when using the automatic start
sequence. The speed set point will remain at this setting until the Idle 2 Delay/hold time has expired.
(Must be greater than the ‘Low Idle’ Setting)
IDLE 2 DELAY TIME—COLD (MINUTES)
dflt= 1.0 (0.0, 500)
Enter the cold start hold time desired at Idle 2. This is the programmable time, in minutes, that the
turbine will wait/hold at the Idle 2 speed when a cold start is determined.
IDLE 2 DELAY TIME—WARM (MINUTES)
dflt= 1.0 (0.0, 500)
Enter the cold start hold time desired at Idle 2. This is the programmable time, in minutes, that the
turbine will wait/hold at the Idle 2 speed when a warm start is determined. The warm condition is only
available when using temperature analog inputs.
Содержание 505XT
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