NTC-09.16 “Programmable logic controller – Pulse-width converter”

• body, which contains electrical equipment, electronic boards, front panel and worktop of integrated desktop;
• machine unit (spark), containing two electrical machines: asynchronous electrical motor with squirrel-caged rotor and direct current motor with separate excitation. Optical speed sensor is installed on machine unit.

The bench contains the following devices (modules) used in laboratory work: input device, regulated and unregulated power supplies, power inverter, controller unit and other devices, as well as the work field with the mnemonic diagram of the objects depicted.

The basis-bench contains:

• input unit IU-03 – 1 pc.;
• power supply unit PSU-01 – 1 pc.;
• power supply unit PSU-05 – 1 pc.;
• pulse-width converter unit PWCU-02 – 1 pc.;
• programmable logic controller unit CU-03 – 1 pc.;
• operator panel unit PU-02 – 1 pc.;
• investigated system unit ISU-01 – 1 pc.

Input unit IU-03 implements the basis power supply, and contains residual current device, zero protection, and short circuit protection.

Power supply unit PSU-01 is intended for power supply of control circuits and accessories of the bench and provides short circuit protection. Power supply parameters:

• power 100W;
• Usup 220V, 50Hz;
• Uout1 +5V, 1А stabilized;
• Uout 2 +15V, 1А stabilized;
• Uout 3 -15V, 1А stabilized;
• Uout 4 +24V, 1А stabilized;
• Uout 5 +250V, 1А unstabilized.

Power supply unit PSU-05 is intended for power supply of the load motor. Power supply parameters:

• power 100W;
• Usup 220V, 50Hz;
• Uout 0..80V, 1А regulated.

Pulse-width converter unit PWCU-02 is designed for producing controlled DC voltage. It is based on intelligent power module controlled by a microcontroller, which allows for a variety of protection (overload, power failure, power surge, etc.).

Programmable logic controller unit CU-03 is designed for studying the basics of the adjustment, programming, and operation of the programmable logic controller. The unit contains a programmable logic controller.

The operator panel unit PU-02 is designed for visual display of parameters and operational control.

Investigated system unit ISU-01 is designed for building automation system of programmable logic controller – pulse-width converter. On the front panel the graphic symbols of input components are plotted, as well as connectors for switching system components together or connecting additional external devices are located.

The stand is accompanied with a set of teaching materials and technical documentation intended for the teaching staff.