Draw a block diagram of digital output module of PLC.

1 Answer

Answer :

Block diagram of digital output module of PLC:

image

Related questions

Description : Draw the block diagram of PLC.

Last Answer : Block diagram of PLC and input/output devices used for PLC Input/output devices - The input module has bank of terminals for physically connecting input devices, like push buttons, limit switches etc. ... is to translate signals from the PLC's CPU into a form that the output device can use.

Description : List any two ratings of digital input and digital output module each.

Last Answer : Ratings of Digital Input Module: i) Rated voltage & current: +24V DC at 4mA/120V AC at 6mA/230V AC at 9mA ii) Specified operational voltage range: 0-30V DC/ 264V AC. iii) Absolute maximum input voltage: + ... / 2A for relay type/0.5A AC vi) Rated current/common: 6A DC/8A for relay type/0.5A AC

Description : Draw typical wiring details & four specifications of AC output module of PLC.

Last Answer : The below figure show the basic field wiring for digital 120V AC output module. The Wiring diagrams show how wires of output devices are connected to screw terminals of PLC modules. As per the wiring ... excessive current from damaging the wiring to the field devices.  Specifications:-

Description : State any two input and output devices of PLC

Last Answer : Input Devices of PLC: i) Selector switches ii) Push buttons iii) Binary encoders iv) Mechanical/magnetic Limit switches v) Inductive/ capacitive/optical proximity switches vi) Analog transducers ... /Lamps v) Solenoids vi) Continuous/ discrete valves vii)Analog/digital indicators/recorders etc.

Description : Draw block diagram of PID controller

Last Answer : Block diagram of PID Controller:

Description : Draw block diagram of proportional controller.

Last Answer : Block diagram of Proportional Controller:

Description : Draw the block diagram for PLC power supply and explain the function of each block.

Last Answer : PLC power supply generates the required dc voltage levels for operation of the internal circuit of PLC. It is a switched mode power supply which accepts wide range of AC/ DC input ... of power failure from AC input, Battery backup becomes active and prevents accidental shut down of PLC

Description : Draw a neat labelled diagram of PLC. Explain the function of each block.

Last Answer : Block Diagram of PLC:-  A simplified block diagram of a PLC shown in above Fig. It has three major units/sections.  I/O (Input/Output) Modules.  CPU (Central ... membrane keypad for program entry, and a display device (LED or LCD) for viewing program steps of functions. 

Description : Draw and explain analog input module of PLC.

Last Answer : Analog input module are used for supplying analog input signal to PLC. Analog signals are generated by transducers, potentiometers. PLCs analog input module consists of analog-to-digital converter (ADC). ... of PLC. PLC reads the binary number and takes further decision based on the required logic 

Description : Draw the block diagram of discrete input module & explain each block.

Last Answer : Power conversion: It consists of rectifier which converts the incoming AC signal to a pulsating dc level, which is passed through filter and other logic in order to deliver a clean and denounced dc ... Logic section: It passes the input signal to the module s input address LED and the CPU.

Description : State the function of PLC memory w.r.t. types, speed of execution.

Last Answer : PLC memory cab be divided into two major types: 1) System memory: a) Executive Memory: The executive is a permanently stored collection of programs that are considered part of the system itself. ... RAM memory is fastest amongst all type of memory. Flash ROM memory is faster than ROM memory. 

Description : State the function of seal in circuit w.r.t. PLC.

Last Answer : Standard Start-Stop-Seal circuit:  * The Start-Stop-Seal circuit is as shown in figure. The power circuit consists of 3ph load (Motor) connected by a main contactor (M) to 3-phase supply. The ... * When STOP is pressed, M gets de-energized and motor gets disconnected from supply.

Description : Explain UP counter instruction of PLC with suitable instruction.

Last Answer : The CTU is an instruction that counts false-to-true rung transitions. Rung transitions can be caused by events occurring in the program. When rung conditions for a CTU instruction have made a false-to-true ... accumulated count to zero. Counting can resume when rung 4 goes false again.

Description : List any two advantages and any two disadvantages of PLC.

Last Answer : Advantages of PLC: i) Increased productivity ii) Increased product quality iii) Increased flexibility and convertibility iv) Reduced manpower v) Reduced cost of product vi) Better inventory control vii) Increased ... v) PLCs are not very good at handling large amount of data, or complex data.

Description : Draw ladder diagram for following sequence: i) When NO START Pushbutton is pressed Green light is on. ii) When NC STOP Pushbutton is pressed Red light is on. Green light goes off.

Last Answer : ladder diagram

Description : Explain with block diagram the working of programmable logic control system. (PLC).

Last Answer : Programmable logic controller:  Block diagram: OR Explanation: PLCs are industrially hardened microcomputers that perform discrete or continuous control functions in a variety ... provides an interface between the PLC and user during program development, start-up and trouble shooting

Description : Describe the working of PLC based automic car park barrier system with block diagram.

Last Answer : Diagram: Explanation: * Automatic car parking system allow to park maximum numbers of car in parking zone. * According to size of parking zone. In parking zone number of vehicle ... to available parking space then automated parking system does not allow enter next car in parking zone. 

Description : List & explain the timer instruction of PLC. Draw the ladder diagram to verify (i) OR gate& (ii) NOR gate logic 

Last Answer : Depending on the time delay and operation, there are two types of timers  * PLC timer- (i) ON delay timer  (ii) OFF delay timer Description (i) ON delay timer 1) This instruction counts time interval when ... a) OR gate ladder diagram y = A + B b)NOR gate ladder diagram

Description : Drawthe PLC ladder diagram of ON-OFF control of lamp. Write the input and output devises.

Last Answer : Diagram:

Description : Draw the basic block diagram of digital meter and explain the function of each block. 

Last Answer : Alternator: It reduces the unknown voltage to a small value. Because the reference voltage is very less and the unknown voltage is maximum. A/D converter: It converts the analog signal from ... and display: It decodes the binary code to decimal form and gives a visual display of it. 

Description : Draw block diagram of digital frequency meter in time mode and describe its operation.

Last Answer : OR Operation: The input signal is amplified and converted to a square wave by a Schmitt Trigger circuit. In this diagram the square wave is differentiated and clipped to ... thereby closing it. The decimal counter and display unit output correspond to the number of input pulses. 

Description : What is LCR meter? Draw digital LCR –Q meter block diagram.

Last Answer : An LCR meter is a type of electronic test equipment used to measure the inductance (L), capacitance (C), and resistance (R) of an electronic component. Block diagram digital LCR –Q meter  

Description : Draw block diagram of digital LCR –Q meter and explain its working.

Last Answer : Block diagram Working The output of LCR-Q meter is given to current to voltage converter, AC amplifier or DC amplifer depending upon position of switch Current to voltage ... /D converter. A/D converter converts analog signal into digital output andfinaaly displayed on display.

Description : Draw block diagram of successive approximation digital voltmeter. State its two advantages and two disadvantages

Last Answer : Block diagram Or Advantages: o It is economical method of analog to digital conversion. o The resolution is up to 5 important digits are obtained. Disadvantages: o ... depends on which type of switches are used. o The conversion time required for digital to analog converter.

Description : Draw block diagram of digital storage oscilloscope.

Last Answer : block diagram of digital storage oscilloscope.

Description : Draw the block diagram of digital communication system.Explain the function of source encoder and channel encoder.

Last Answer : Source Encoder : The input to the source encoder (also referred to as the source coder) is a string of symbols occurring at a rate symbols/sec. The source encoder converts the ... it possible for the receiver to detect and/or correct some of the errors in the information bearing bits.

Description : Draw construction of DC servomotor. 

Last Answer : DC servomotor:

Description : Draw power and control circuit for definite time-limit starter for slip-ring induction motor. Explain its working.

Last Answer : Definite Time-limit Starter for Slip-ring Induction Motor: This starter is used for automatic control of acceleration of slip-ring induction motor at the time of starting. In this starter, the ... each phase, shorting the rotor winding terminals and final acceleration of the motor takes place. 

Description : Explain count up (CTU) instruction with timing diagram.

Last Answer : The CTU is an instruction that counts false-to-true rung transitions. Rung transitions can be caused by events occurring in the program. When rung conditions for a CTU instruction have made a false-to-true ... of Counter up(CTU) Instruction: Too many uploads - please try again in an hour

Description : Develop power and control diagram for secondary frequency acceleration starter of slip ring induction motor. 

Last Answer : Power and Control Circuit diagram for secondary frequency acceleration starter of slip ring induction motor:

Description : Explain pressure actuated switch with neat constructional diagram.

Last Answer : Pressure actuated switch: A pressure actuated switch is a device designed to monitor a process pressure and provide an output when a set pressure (setpoint) is reached. A pressure actuated switch does this by ... range spring (e.g. if the nt is turned clockwise the trip pressure will be higher). 

Description : Explain concept of capacitive type proximity switch with neat schematic diagram.

Last Answer : Capacitive type proximity switch: A capacitive proximity switch is device that senses presence of metallic or nonmetallic objects. The internal circuit consists of an oscillator, threshold detection stage and ... in oscillation amplitude is detected and output switching device is turned on. 

Description : Draw and explain schematic of PLC based automatic car parking barrier system.

Last Answer : Explanation: Automatic car parking system allow to park maximum numbers of car in parking zone according to size of parking zone. parking zone number of vehicle parked in parking zone is less ... available parking space then automated parking system does not allow enter next car in parking zone. 

Description : List any four input and four output devices used with PLC.

Last Answer : Input device: 1. Push button. 2. Temperature switches. 3. Limit switches. 4. Pressure switches. 5. Level Switches. 6. Proximity Switches. Output devices: 1. Motor. 2. Display. 3. Heater coil. 4. Relay. 5. Lamp. 6. Buzzer.

Description : List any our input and output of PLC.

Last Answer : Typical PLC inputs  1) Push Button  2) Selector Switch  3) Proximity switch  4) FOOT switch, level switch  5) Analog input  Typical PLC outputs  1) Contactor Coil, solenoid, relay  2) Indicating Lamp  3) Buzzer  4) Alaram annunciator

Description : List typical inputs and outputs for PLC (four input and any four output).

Last Answer : Typical PLC inputs  Push Button  Selector Switch  Proximity switch  FOOT switch, level switch  Analog input  Typical PLC outputs  Contactor Coil, solenoid, relay  Indicating Lamp  Buzzer  Alaram annunciator

Description : is a small program tested separately before combining with final program: a Module b. Block c. selection d. none of these

Last Answer : a Module

Description : Draw the block diagram of regulated power supply.

Last Answer : Block diagram of regulated power supply:

Description : Draw block diagram of DMM. State its advantages.

Last Answer : Advantages of DMM: 1. DMM provides numerical readouts that eliminate observational errors. Thus providing better readability. 2. DMM offers better accuracy and versatility as compared to ... memory devices for further computations. 5. The decreased size of DMM increases the portability

Description : Draw block diagram of distortion factor meter and explain its operation.

Last Answer : Block Diagram Operation This meter consist following four sections 1. Impedance converter along with input circuit 2. Rejection amplifier 3. Metering circuit 4. Power circuit 1. ... of the total input voltage. 4. The power supply unit provides the supply for proper operation 

Description : Draw block diagram of spectrum analyser, State applications of spectrum analyser.

Last Answer : Block Diagram: Applications: 1. Spectrum analyzer is a very important item of test equipment for someone designing or repairing electronic equipment that uses radio frequency signals. 2. Its ... of the dominant frequency within a signal 8. Used to measure the properties of RF devices

Description : Define wave analyser and state its need, Draw the block diagram of it. 

Last Answer : Wave analyzer:- Wave analyzer is an instrument which is used to measure the magnitude of the various harmonics of a complex waveform. It is an instrument that is designed to measure the relative amplitudes ... distortion and the system signal to noise ratio. Block Diagram of Wave analyser

Description : Draw block diagram of RF signal generator and explain its operation.

Last Answer : RF signal generator contains three other main sections: 1.OSCILLATOR CIRCUIT, 2. MODULATOR, 3. OUTPUT CONTROL CIRCUIT. The modulator modulates the RF signal of the ... . Metal shielding surrounds the unit to prevent signals from the oscillator from affecting the circuit under test

Description : Draw block diagram of DSO . State applications of DSO

Last Answer : Applications of DSO : 1. It can be used to measure both AC and DC voltages and currents. It can also calculate RMS value, peak value, peak to peak value etc. 2. It ... . 5. It can be used to determine the modulation characteristics and detect the standing waves of transmission lines.

Description : Draw block diagram of function generator and list two specifications of it. 

Last Answer : Specifications: 1. Output- Square wave , sine wave, Triangular, TTL pulse 2. Frequency Ranges- 0.1 Hz to 11 MHz, up/down range switchable in eight decade steps 3. Dial Range-1 to 11 calibrated 0.1 to 1 uncalibrated 4. Pulse and Ramp Aspect Ratio-95:5

Description : Draw the basic block diagram of single trace CRO and describe the function of delay line.

Last Answer : Function of Delay line: This block is used to delay the signal for a period of time in the vertical section of CRT. The input signal is not applied directly to the vertical plates because the part ... when the delay time is not used. Therefore, the input signal is delayed by a period of time. 

Description : Draw and explain block diagram of Horizontal deflection system. 

Last Answer :  Trigger circuit: A trigger circuit is used to convert the incoming signal into trigger pulses, so that the input signal and the sweep frequency can be synchronized. The trigger circuit is ... before it is applied to the horizontal section. The block consists of a push- pull amplifier  

Description : Draw block diagram of Dual slope integrating voltmeter and also draw waveform for voltage V/s time. 

Last Answer : Block diagram

Description : Draw block diagram of frequency meter and state it’s principle of operation

Last Answer : Block diagram Principle  The signal may be amplified before being applied to the Schmitt trigger. The Schmitt trigger converts the input signal into a square wave with fast rise and fall times, ... time interval between start and stop gate then, frequency of unknown signalis, f = N / t

Description : Sketch block diagram of pattern generator and draw any four test patterns

Last Answer :  Block Diagram of Pattern Generator: Test patterns of Pattern Generator: