ADC-1 Modular Educational Systems For Drives Of DC Motors Didactic Equipment Electrical Workbench
System mod. ADC-1 has been designed and manufactured with industrial components according to educational standards. It is the suitable tool for the theoretical-practical study of DC motor drive. TRAINING PROGRAM: Trainer mod. ADC-1 allows the theoretical-practical study ofthe following subjects: • Mechanical and electrical features of DC motors • DC motor drives • 2Q MOSFET drive (control and power circuits). • 4Q MOSFET drive (control and power circuits). TECHNICAL CHARACTERISTICS: Trainer mod. ADC-1 consists of three units (with applicableoverlays) for the exhaustive study of the industrial drive of a DCmotor. These units are: • A1D DC DRIVE - Microprocessor module • A2D DC MOTOR CONTROL - Power circuit • MDAQ - Data acquisition module The development of the exercises of the training programconsists in fi xing the units in the support mod. TSI-1, placingover the due overlay for the exercise under test and arrangingthe proper connections. Each unit includes a panel of insulating material with Ø = 4 mmsafety terminals, for connections. Connecting module MDAQ will supply the (opto-isolated)signals of voltages and currents of unit A2D.
A1D DC DRIVE -Microprocessor module Module A1D is connected with module A2D via a 25-poleconnector and enables its operation by generating thenecessary signals for control of power circuits. It includes a 4-line alphanumeric display to show various data,such as the codes of the module and of the connected overlay,the set point value, the selected control mode (open or closedloop, with tachogenerator or armature voltage) etc... ThisModule includes a PID controller for the speed of the DC motorcoupled to a tachogenerator (motor & tachogenerator are notincluded), connected with unit A2D. It is possible to set the P, I and D values and the acceleration& deceleration ramps. The on-board pushbuttons enable thenavigation through the menu, and the potentiometers allow tomodify the selected parameters. Furthermore two other analoginputs of 0 to 10 V are available for the connection with anysource of external signals. A2D DC MOTOR CONTROL –Power circuit Unit A2D includes the power circuits for the DC motor. Twoassociated overlays are supplied, for the following powercircuits: 2QC DC motor 2Q control 4QC DC motor 4Q control (“H” bridge confi guration) Two Ø = 4 mm safety terminals allow the connection witha tachogenerator for closed loop control. Other two Ø = 4mm safety terminals are available for the control of motor overtemperature. Connecting module MDAQ with 15-pole connectors will supplythe (opto-isolated) signals of voltages and currents available inthe two exercises. MDAQ - Data acquisition module Module MDAQ supplies the (opto-isolated) signals of the unitwhich it is connected with, on 30 safety terminals (Ø = 2 mm). The opto-isolated signals ensure electrical safe conditionsfor students when carrying out measurements: for instance,it is not necessary to use differential probes when using oscilloscope. Supply with THEORETICAL – EXPERIMENTAL HANDBOOK