Siemens SIPART DR24 is a process controller as single-channel or dualchannel controller for complex control tasks, with additional computing functions in the input area. The digital controller in 72 × 144 mm format is suitable for all process-specific tasks such as mathematical calculations, logic operations, open-loop controls and time-controlled closed-loop controls.
The SIPART DR24 multifunction unit is used for calculating, open-loop and closed-loop control in process engineering. It can be freely configured to match the respective task. During structuring, the functions stored in the memory are called (see table on page 4/3) and connected through simple assignment to one another as well as with the inputs and outputs and the indicators and buttons of their operator control and display unit.
No programming knowledge is required for this task. The multifunction unit can be connected to higher-level automation systems, control systems or process computers in analog, parallel connection technology as well as over an addressable serial interface with bus capability.
Application examples:
- Computer for mathematical equations, chronological processes, logic operations and parallel computation processes
- Programmers (timers) also in connection with closed-loop controllers, calculations and open-loop controllers
- Closed-loop controllers with continuous manipulated variable and/or three-point step controllers; inputs and outputs of the controller blocks can be freely configured, e.g. with computation and control functions; as individual controller or for parallel operation of up to four independent control loops, for selection controllers, cascade controllers, SPC or DDC operation
- Program controllers; up to 8 programs
- Boiler controllers with mathematical evaluation of the process variables (min./max. selection, correction calculator, etc.)
- Burner controllers with control functions
- Thermodynamic process controllers and calculations (enthalpy)
- Furnace and zone controllers with scheduled setpoint control and linearization
- Test bed open-loop and closed-loop control
- Process controllers along conveyor lines (e.g. conveyor belt) with dead time element
- Pump limit controllers
- Transformers of analog and binary process variables from and to serial interface
- Process monitoring (thresholds, failure messages, etc.)
- Dependent and mutual locking as well as override setpoint control
- Multiplexers for process variables and/or setpoints
- Weighted averaging using sampling values
