DLHOME.GIF (1102 byte)

Simulated  Controlled   System

DL 2675

Module DL 2675 allows the simulation of different processes, such as: 1st and 2nd order processes, proportional ( P ) action processes, integral ( I ) action processes, double integral ( I2 ) action processes.

Technical features

DL2675.gif (10940 byte)
Power supply: +15 V ; 0 V ; -15 V
Input summing point for controlling variable (y) and noise variable (z).
Signal voltage range: -10V, ..., +10V
Coefficient of the proportional action of theprocess KP  = 0.2 (attenuation) ....1.5 (amplification)
Time constant T1 = 0.1 .... 1000 s
Time constant T2 = 0.1 .... 1000 s
Reset input for the restoration of the initial conditions
Coarse setting through rotary switches
Potentiometric fine setting
Leds indicators of over-range

Description
1. Input terminal for the controlling variable (y)
2. Pushbutton for the insertion of the noise variable (z)
3. Output terminal for the controlled variable (x) for a 1st order or I type process
4. Output terminal for the controlled variable (x) for a 2nd order or I2 type process
5. Switches for selecting the store unit as delay elements (on) or integrators (off)
6. Rotary switches for the coarse setting of the time constants T1 and T2
7. Potentiometers for the fine setting of the time constants T1 and T2
8. Potentiometer for the setting of the coefficient of the proportional action of the KP process
9. Input Ioff for the restoration of the initial conditions:
Ioff < 4 V : reset and restoration of the initial conditions;
Ioff > 8 V or disconnected: store unit (delay elements and/or integrators) active
10. Led "over" on when the output voltage is higher than 10 V or lower than -10 V

Operation
A. Use of the time constants T1 and T2 as delay elements (1st and 2nd order processes):
- switches 5 to position on
- potentiometers 7 to position 1
- rotary switches 6 to one of the positions allowed for the selection of the following time constants:  0.1s; 1s; 10s; 100s
B. Use of the time constants T1 and T2 as integrators (type I and  I2 processes):
- switches 5 to position off
- rotary switches 6, for the coarse setting, to one of the allowed multiplying positions: x0.1; x1; x10; x100
- potentiometers 7, for the fine setting, between 1s and 10s