When this header appears in the display, press the down arrow key to configure this block or press a left or right arrow key to select another block to configure.
USE CASCADE CONTROL? dflt= NO (Yes/No)
MIN CASCADE SETPOINT (UNITS) dflt= 0.0 (-20000, 20000) Set the minimum cascade setpoint followed by ENTER. This value is the minimum setpoint value that the cascade setpoint can be
decreased/lowered to (lower limit of cascade setpoint).
MAX CASCADE SETPOINT (UNITS) dflt= 100 (-20000, 20000)
Set the maximum cascade setpoint followed by ENTER. This value is the maximum setpoint value that the cascade setpoint can be increased/raised to (upper limit of cascade setpoint).
(Must be greater than the ‘Min Cascade Setpt’ Setting)
CASC SETPT RATE (UNITS/SEC) dflt= 5.0 (0.01, 1000)
Set the cascade setpoint rate followed by ENTER. This value is the rate (in units per second) at which cascade setpoint moves when adjusted.
USE SETPOINT TRACKING? dflt= NO (Yes/No)
Select YES or NO followed by ENTER. If YES, the cascade setpoint tracks the cascade input to provide bumpless transfer to cascade control when it is enabled. If NO, the cascade setpoint remains at the last position except on power-up or exiting the program mode.
SETPT INITIAL VALUE (UNITS) dflt= 100 (-20000, 20000)
Set the setpoint initialization value followed by ENTER. When not using the Setpoint Tracking function, this is the value that the cascade setpoint initializes to upon power-up or exiting the program mode.
(Must be less than or equal to the ‘Max Cascade Setpt’ Setting)
SPEED SETPOINT LOWER LIMIT (RPM) dflt= 3605 (0.0, 20000)
Set the minimum speed setpoint that the cascade controller can lower the speed setpoint to followed by ENTER. To protect the unit, this value should be at or above rated speed if the unit is a generator.
(Must be greater than or equal to the ‘Minimum Governor Speed Setpt’ Setting)
SPEED SETPOINT UPPER LIMIT (RPM) dflt= 3780 (0.0, 20000)
Set the maximum speed setpoint that cascade controller can raise the speed setpoint to followed by the ENTER key.
(Must be less than or equal to the ‘Maximum Governor Speed Setpt’ Setting)
MAX SPEED SETPOINT RATE (RPM/SEC) dflt= 20 (0.1, 100)
Set the maximum rate at which the cascade control can vary the speed setpoint followed by the ENTER key.
CASCADE DROOP (%) dflt= 0.0 (0.0, 100)
Enter the droop percentage followed by the ENTER key. If needed, typically set between 4-6% and not more than 10%.
CASCADE PID PROPORTIONAL GAIN (%) dflt= 5.0 (0.0, 100)
Enter the cascade PID proportional gain value followed by ENTER. This value is used to set cascade control response. This value can be changed in the Run Mode while the turbine is operating. If unknown, a recommended starting value is 1%.
CASCADE PID INTEGRAL GAIN dflt= 0.3 (0.001, 50.0)
Enter the cascade PID integral gain value, in repeats-per-second (rps) followed by ENTER. This value is used to set cascade control response. This value can be changed in the Run Mode while the turbine is operating. If unknown, a recommended starting value is 0.3 rps.
CASCADE PID DERIVATIVE RATIO (%) dflt= 100 (0.0101, 100)
Enter the cascade PID derivative ratio followed by ENTER. This value is used to set cascade control response. This value can be changed in the Service Mode while the turbine is operating. If unknown, a recommended starting value is 100%.
USE REMOTE CASCADE SETTING? dflt= NO (Yes/No)
Set to YES to allow the Cascade setpoint to be adjusted from an analog input.
RMT CASCADE MAX RATE (UNITS/SEC) dflt= 5.0 (0.01, 1000) Enter the maximum rate at which the remote input will move the cascade setpoint followed by the ENTER key.
CASCADE UNITS OF MEASURE: (must choose from list)
Scroll through the option list by using the Adjust Up/Down Arrows or by selecting the NO key until the option desired appears, then press the YES or ENTER keys to select the option/function.
Options: psi kPa
MW kW degF degC t/h k#/hr kg/cm² bar atm #/hr (none)
Readouts
When this header appears in the display, press the down arrow key to configure this block or press a left or right arrow key to select another block to configure. All six 4–20 mA analog readouts may be configured. The function that the readout uses must be programmed or an error message will occur. For example, to use the Cascade Setpoint readout, the ‘Use Cascade’ function must be programmed.
ANALOG READOUT # 1 FUNCTION (must choose from list)
Scroll through the option list by using the Adjust Up/Down Arrows or by selecting the NO key until the option desired appears, then press the YES or ENTER keys to select the option/function.
ANALOG READOUT OPTIONS (Not Used)
Actual Speed Rmt Cascade Setpt
Speed Setpoint Auxiliary Input
Remote Speed Setpt Auxiliary Setpoint
Sync/Load Share Input Rmt Auxiliary Setpt
Sync Input Speed/Load Demand
KW Input Extr/Adm Demand
Extr/Adm Input HP Valve Limiter Setpt
Extr/Adm Setpt LP Valve Limiter Setpt
Rmt Extr/Adm Setpt HP Valve Demand
Cascade Input LP Valve Demand
Cascade Setpoint First Stage Press Input
READOUT 1–4 mA VALUE (UNITS) dflt= 0.0 (-20000, 20000)
Set the value (in engineering units) that corresponds to 4 milliamps (mA) on the analog output followed by the ENTER key. If the value on the display is correct, just select the ENTER key which will advance you to the next question.
READOUT 1–20 mA VALUE (UNITS) dflt= 100 (-20000, 20000)
Set the value (in engineering units) that corresponds to 20 milliamps (mA) on the analog output followed by the ENTER key. If the value on the display is correct, just select the ENTER key which will advance you to the next question.