PID CONTROLLERS
PID CONTROLLERS
DESCRIPTION
UNICON® IS A THREE TERM CONTROLLER, WHICH CAN BE USED FOR STAND-ALONE APPLICATIONS WHERE A PLANT SUPERVISORY SYSTEM (E.G. PLC OR DCS, ETC.) IS NOT PRESENT.
THE UNIT IS AVAILABLE IN THREE DIFFERENT VARIANTS:
- Single Loop Controller:
The standard three term controller mode where the set point can be adjusted locally via the keypad or remotely via the (4-20mA) analogue input. The Proportional, Integral and Derivative control parameters are adjustable via the keypad. The (4-20mA) analogue control output can be operated in Automatic and Manual control modes. - Remote Set-point Station:
This mode provides a set point output via a (4-20 mA) analogue signal. The process variable can also be displayed & to this end a (4-20 mA) analogue input is provided. - Remote Set-point station with Cut-Back option:
The Cut-back option provides a means to reduce the set point output by a preset percentage when activated via a digital input. The value to which the output restores, after removal of the cut-back signal, is also programmable. This option is typically used in the cement industry for pulverised fuel control.
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