UFC911B110 3BHE037864R0110 Digital input module

Process Dynamics 

• Process Master Uses Process PID to control. 

• Gain, Stability, Derivative, Filter, Droop. 

• Slaves to the Process Master use Load Control PID Values to track master system load reference. Process Action

 • Defines action of speed bias when unit is operating in process control in parallel with the mains. 

• Direct action = Unit increases speed bias (fuel) to increase process 4–20 mA input. 

• example: Export Power control

 • Indirect action = Unit decreases speed bias (fuel) to increase process 4–20 mA input. 

• example: Import Power Control

Process Gain 

• Sets system gain response while in process control. 

• Effective when active master unit only. Slaves rely on Load Control dynamic settings to control response to master load reference. 

• Should be set with maximum number of units operating in process control mode. Process Stability

 • Sets system stability response while in process control. 

• Effective at active master unit only. Slaves rely on Load Control dynamic settings to control response to master load reference.

 • Should be set with maximum number of units operating in process control mode.

Process Derivative

 • Sets system derivative response while in process control. 

• Effective at active master unit only. Slaves rely on Load Control dynamic settings to control response to master load reference. 

• Should be set with maximum number of units operating in process control mode. Process Deadband

 • Range: 0.3–5.0%. o This is % of full scale. o Full Scale is figured from the Process Low Value and Process High Value set points.

 • ± deadband around process reference point. 

• Used to add stability to marginally stable process.