OBJECTIVES:
To control the water temperature using combination of P, I & D modes.
To correct the error between a measured process variable and a desired set point by calculating and then outputting a corrective action that can adjust the process accordingly.
INTRODUCTION:
Heater ON/OFF (Reaction) status can be determined based on the given SP and PV (Current Error).Temp INC/DEC (Reaction) is done based on the sum of recent errors.Increasing/Decreasing the temperature is done by switching ON/OFF the heater.“The derivative determines the reaction to the rate at which the error has been changing
FEATURES OF THIS TRAINER:
1.Controller 89C51
- Compatible with MCS-51™ Products
- 4K Bytes of In-System Reprogrammable Flash Memory
- Endurance: 1,000 Write/Erase Cycles
- Fully Static Operation: 0 Hz to 24 MHz
- Three-Level Program Memory Lock
- 128 x 8-Bit Internal RAM
- 32 Programmable I/O Lines
- Two 16-Bit Timer/Counters
- Six Interrupt Sources
- Programmable Serial Channel
- Low Power Idle and Power Down Modes
- Reset Switch To Reset Both Controllers.
| 2.Mode Selector Switch | Four mode selectable switch |
| 3.Control switches: |
Four control switches are provided |
| Reset | To reset the microcontroller |
| Start | To start a program |
| Enter | To start the operation |
| Set Point | To adjust the set point value |
| 4.Display | An LCD is provided to observe the all operating condition in microcontroller. |
5.LIST OF EXPERIMENTS (6 mode):
- Digital Thermometer
- Proportional
- Integral
- Proportional-Integral
- Proportional-Derivative
- Proportional-Integral-Derivative
SPECIFICATION:
| Built-in power supply | + 5V/1A |
| Power | 230V AC/50 Hz mains operated |
| Patch Cords | 2mm moulded patch cords with daisying facility. |
| Dimension | 350mm X 270mm X 120mm |
| Housing | Enclosed in a metal cabinet |
| Weight(APPROX) | 2 Kg, |
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