Questions tagged [automation]

Automation or automatic control, is the use of various control systems for operating equipment such as machinery, processes in factories, boilers and heat treating ovens, switching in telephone networks, steering and stabilization of ships or aircraft and other applications with minimal or reduced human intervention

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37 views

Measurement of delay between two signals using MSO4104 with PyVisa

I need to automate the measurement of delay between two signals using the oscilloscope. I am using MSO4104 from Tektronix. I programmed the oscilloscope for delay measurement, but I am not getting the ...
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2answers
178 views

What type of electronics is typically used to interface between PCs and custom hardware? [closed]

I have tried to make this question acceptable for StackExchange, I am not looking for buying advice, just either examples of hardware that could have been used or the name of types of devices I should ...
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32 views

Feedforward from measurable disturbance

Gff is chosen so that it completely cancels the disturbance (Gff = -Gv/P) and Lp < Lv. Is it easier to control if Tp < Tv or Tp > Tv. I am a little bit lost on how to begin here? Should I ...
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1answer
29 views

Delay in turning on two different start buttons in Star/Delta starter on PLC

Currently I'm working on a university project based on Star/Delta Starter on PLC. I wrote program using LD, that switches on the circuit with a motor rotating forward (of course with star/delta ...
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42 views

Level sensor Transmitter

I have a level sensor and transmitter(4-20mA standard) of Qidian Automation for sensing level of liquid in tank having capacity of 1000 litres. On transmitter it is displayed 0.516 when tank is half ...
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1answer
36 views

I need to understand the circuit diagram of a Klöckner Moeller relay output unit

I am working on the automation of an old servo driven feed system for a mechanical power press. I have come across these relay output units from Klöckner Moeller (machine make year 1980`s) pictures ...
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31 views

EC and pH sensor in plc automation

I am working with automation using pH and EC sensors. Both are of 4-20mA communication standard. When at a time single sensor is placed in liquid(in 1000 litre tank) then everything works fine (...
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1answer
35 views

Ceramic pressure measurement - capacitive or piezoelectrical?

Context: I'm writing about an old industrial training facility used for a petrochemical process. In this training facility, there is a 3-phase separator. On that separator is a pressure measurement. ...
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43 views

How i can automate a circuit using transistors instead switches?

I'm recycling the counter circuit of a microwave, for use it as a stopwatch, that turns on automatically, and start the count per seconds immediately when turns on, the circuit have two buttons "...
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1answer
38 views

Problems enabling remote voltage-sense Rigol load DL3021 via SCPI

I am automating some tests with Rigol hardware. There is only one bottleneck in the SCPI implementation that I can't figure out: How to enable the remote voltage-sense terminals on the Rigol DP3021 ...
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2answers
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Is it advisable to exceed the rated currect of a relay for a brief moment, when using it to drive an inductive load (a motor)?

I am building a relay circuit for pump control with a microcontroller. It is a 1.5 HP single-phase water pump that draws around 13A during normal running and has a starting current that briefly (< ...
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54 views

What is this chip in a old wireless window security sensor?

I opened one of the old window security sensor as I'm curious what wireless technology and chipsets were used. Obviously, this is big antenna, so likely 433MHz RF. But I couldn't identify this chip? ...
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1answer
52 views

Looking for a validating bill module [closed]

My team and I are working on a project which deals with money management. Basically we need a module that could count and verify the authenticity of bundles of bills. For the moment, we only found ...
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1answer
67 views

2-way DC motor control for greenhouse IoT application

Edit: After doing more research, it seems simply reversing the DC polarity would do the trick as explained here: https://www.precisionmicrodrives.com/content/are-dc-motors-reversible This can be ...
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1answer
36 views

Simatic Microbox PC

I just started my research studies and part of it is based on an assembly line which uses a Microbox IPC427E for automation. However, I have never used a microbox before and only have some experience ...
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1answer
53 views

Advice needed for a final year project on wheelchair automation and control

My project partners and I have been trying to design a wheelchair for people with neuro-degenerative diseases. I know this has been done in the past, however we are using a different approach. We are ...
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1answer
66 views

Advice for Switching High Current Motor (Relay vs. SSR vs. Mechanical Switch)

I'm working on automating an irrigation system which has a large well pump that uses 24-32 volts, directly from a solar array. This was previously switched by a light switch manually, but after my ...
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1answer
28 views

STEP7 MICROWIN PLC Ladder Diagram

I draw like the first figure in the program, but when I save the program it automatically becomes the second shape. Do the two mean the same thing?
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34 views

lyapunov function derevation

hi could you please help me to know how did they find the derivative of V lyapunov function
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1answer
40 views

Automation Control Cabinet Isolation

I`m designing a control cabinet with a 60A output demand for heaters. The on/off switching of the heater will be done through a 24V/80A contactor(relay). The customer wants the main switch on the door....
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1answer
122 views

Motorized rotary switch

Motorized potentiometers are easy to find and often used e.g. in music studio equipment, but I could need a similarly motorized rotary switch for a project. I am either searching for the wrong term (...
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1answer
27 views

Endstop switched

I have a cnc machine and I need to connect an end stop switched to the motor and stages. first I need a simulation for this, that each snd stop is connected to a stage (x,y,z) and when the switch is ...
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1answer
83 views

AC to DC conversion using without neutral

I have a project to replace my wall switch with my smart switch which can be controlled by ESP32. Needed to use AC to DC conversion to get 3.3V from 240V/50Hz. Some of the walls have only phase and ...
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27 views

Smarten up dumb device: remotely control 2 TACT switches and read 5 LEDs via WiFi

Got a "dumb" air cleaning thingy that won't leave the house. Now I'm forced to smarten it up since the more expensive model would have it built in but that doesn't look so nice according to others... ...
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46 views

Discrete time state space matrices for LQR tracker

How do we find the F(T) and G(T) matrices in this digital LQR tracker example? Here is the question from a control systems engineering textbook: And here is the solution: And here are the ...
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2answers
683 views

Is there an open source IO-Link stack available?

I have been looking at designing a solution around an IO-link master. Does the IO-link Consortium allow for open source implentations of both the master and slave? The documents online seem to give ...
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1answer
45 views

State transition graph for a table with a whole column with don't cares

I have this state transition table and I want to draw the state transition graphs Didn't have problems until I reached the last column with the state 11 where the whole column consists of don't cares ...
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1answer
43 views

Learning process automation starting from general engineering background [closed]

I'd like to study process automation by myself, could you suggest a good entry-level book to start with? I have engineering college math level and I remember a bit of Laplace transforms to model ...
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1answer
66 views

Automatic watt/volt/amp switch

Google has failed me so I'm asking here. I am looking for an automatic switch, which will change state depending on the number of Watts/Volts/Amps flowing through the circuit. As an example: When ...
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1answer
74 views

How do I make water tank control circuit?

I would like to make electronic circuit to control water tank. Its works expected as below: Once water inside the tank is lower than its minimum level, then the mechanical sensor A will trigger to ...
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1answer
54 views

Arduino AC Motor Control and Automation? [closed]

My question is about the automation of single phase AC motors. I am aware that I can purchase TRIAC controllers with manual knobs or even 0-10V control inputs. I am new to the world of AC ...
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1answer
47 views

4-20mA PLC analog output ground referencing for other devices

I'm currently using a PLC to control an induction heating coil. I'm using a chinese induction driver that allows 4-20mA PID input. This device runs off standard australian 230v AC 50hz. I've ...
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2answers
70 views

Tektronix TDS3000 series max trigger rate

So I am making a testing stand for some equipment and I am using an old TDS3034C Tektronix scope for most of my measuring purposes. I've connected it to the computer via Ethernet and using PyVisa to ...
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258 views

Using PID relay to drive multiple contactors

I am a physicist by training but have been tasked with designing a heating controller box for a custom application that will be used in an industrial setting. I would like to make sure that I am ...
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41 views

Circuit breaker wiring: put source current on side marked with X or side with switch? [duplicate]

I am trying to wire an electrical panel in a standard manner. I have several automation devices that take 120 Vac power. In order to protect them, I have purchased a 2-pole circuit breaker, Phoenix ...
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1answer
136 views

Switching 400V motor with 5V

I'am trying to make an automatic irrigation system using an Arduino, a moisture meter and a water pump. The issue is that I can't figure out whether there is some relay/contactor type component that ...
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2answers
2k views

Motor with two endstops using limit switches

I have a circuit where two limit-switches to be wired with motors to do the following functionality. It is to be used in a remotely placed device so that the intervention of microcontroller on the ...
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1answer
36 views

Using selector switch to engage only one set of valves

Can you have a selector switch engage one set of directional valves on a machine that can have 2 automated cart dampers which share a motor? Basically the first position on the switch means no set ...
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1answer
408 views

AC servo ASDA-B2 modbus position control [closed]

I have a very specific question on ASDA-B2 servo driver and I hope there is someone who has hands on experience with it who can help me out. I have referred to this user manual and it is not very ...
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2answers
104 views

How to connect a device to ground using negative signal with high impedance

simulate this circuit – Schematic created using CircuitLab I have a device that enables a ground connection when I press a key on a remote control. This negative signal used to control other ...
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1answer
313 views

Reading digital wafevorms via VXI11 from the LeCroy wavesurfer 510/MS-500

I automating a test with an osciloscope via VXI11 with python's vxi11 package. I am using the remote control manual given by LeCroy. I am trying now to extract the raw Waveformdata according to page ...
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1answer
135 views

How do you set up a VFD to run a motor at 2 different speeds?

I'm already familiar with the concept of altering the frequency to change the speed of the motor. So in this scenario, I'm looking into running a pump at 40Hz (high speed) and 23Hz (low speed). This ...
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1answer
44 views

Light Barrier Sensor - clocked or non-clocked light?

I was looking for a sensor, then I caught this: https://www.di-soric.com/pt/OGU-031-P3K-TSSL-44413.html In the specs - emitted light section, it says the emitted light is "Red, Clocked", with a ...
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2answers
2k views

For SCPI programming in python, Is it necessary to install a NI-VISA back-end if you are trying to iterface with a non-National Instruments device? [closed]

[background/context] hello, I am trying to learn to automate measurement devices using SCPI commands, but instead of using Labview I decided to go with python. I have played around with SCPI commands ...
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1answer
148 views

Measuring sensor with two PLCs

Can I measure one sensor with two PLCs? I have a PLC that's part of a machine manufacturing stuff. Another PLC is part of a robotic arm that needs to grab the piece. It would be intresting to be ...
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1answer
461 views

Machine learning for floorplanning

I have an educational assignment to make an floor-planning tool. Can I use machine learning in some part of the algorithm? For example, I was reading the book Algorithms for VLSI Physical Design ...
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1answer
98 views

Safety Interlock [closed]

I'm looking to design a basic system that I believe requires a solenoid interlock. The basis of the system is a swinging gate. The gate has two positions, as you might expect - open and closed. There ...
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2answers
249 views

PLC as gateway with TCP/IP communication stack?

I'm having issues designing an architecture for communication in a vehicle. Currently a PC is connected through a switch to a series of ECUS, each one with a TCP2CAN converter. The PC has to be ...
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2answers
870 views

Command line interface for KiCAD

Is there a way to produce Gerber files from command line in KiCAD (Linux/Unix) or a tool which can do it for me? The same question for SPICE netlist and BOM xml? I need it to automate this process ...
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2answers
192 views

What is the recommended way for starting an ac induction motor with a VFD?

I am designing a control strategy for an AC(induction) 3-phase motor fan in an HVAC air handling unit for pressure control inside the ductwork. The plan is to use a PID algorithm for the pressure ...