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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Is there any ethernet and 4G gateway for PLC? [closed]

I'm new in PLC programming and used only Siemens Logo. The problem I'm facing is that I can not find any gateway device that can directly send the data to server. I want to avoid using PC for simply ...
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Reading 2 digit 7 segments with ESP32 using TM1650 maybe?

I have been trying to contact a forum member that has done a modification to his pool equipment in order to control it remotely instead of having to go to the box every time and check on the codes. ...
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Simple e-stop circuit

I have a motor controller that has an electronic stop function where if I put 5v on a pin the motor runs. Once that 5v gets interrupted (goes to ground) the motor stops immediately. On my device I ...
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Power Analyzer N6705C ELOG query returns empty

I am attempting to use the external data logger (ELOG) of an N6705C to record voltage & current, then pull the measurements from the data buffer. When I use the below SCPI sequence it runs without ...
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Help with VGA KVM switch

Hi for my work im triying to implement a VGA KVM switch to replace a manual switch that the production line workers use to switch between Quality control test, to replace that i tought about using a ...
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1 answer
74 views

Stop 24V DC motor rotation in one direction

I am using a 24V DC motor in my application. I would like to stop my 24DC motor rotation in one direction only i. e. suppose the DC motor is rotating clockwise, in my application, it may happen that ...
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59 views

Strange quadrature encoder signal

I have an inexpensive 600 PPR rotary encoder, like these ones found on Amazon. It is powered by a 5V pin of an Arduino Uno. I was unable to detect any rising edges on the signal pins and they never ...
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Best library/SDK for OPC UA in C under Windows [closed]

I am planning to program an ECU in C to act as an OPC UA client. So far I have been using FreeOpcUa in Python on a Raspberry Pi. Now that I am moving to C, I am looking for equivalent libraries of ...
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Is cutting through hole leads done by hand or machine when wave soldering?

If machines exist, can someone provide some info on what to look for. I'm aware of the frames for doing it by hand. I'm curious how to keep the parts in place once the leads are cut, ie don't shake ...
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ASi (AS-Interface), understanding Power Supply

Can somebody help me understand the ASi (AS-Interface) power supply. I think I understand how the data decoupling works (because of the induction voltage of the inductor). But I dont understand the ...
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Current sensing relay that momentarily closes contact each time state changes

I have a 240V dust collector that I manually switch on and off using a one-button wireless remote. The dust collector is connected to several machines. I'd like to use a current sensing relay to ...
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Efficient temperature control for a growbox

I am making a growbox controller. It has (among other things) a heater and a temperature sensor. Heater has no temperature controls, it can be turned on/off. The objective is to maintain temperature ...
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CAN bus blocked state

I have a transmitter device which periodically sends CAN messages over the bus. I am using an esp32 microcontroller to receive these messages, using a transceiver in between. When I start the ...
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1 answer
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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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3 votes
2 answers
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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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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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1 answer
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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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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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1 answer
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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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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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1 answer
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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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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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1 answer
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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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2 votes
2 answers
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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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-1 votes
1 answer
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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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1 answer
219 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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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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1 answer
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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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1 answer
235 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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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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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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3 votes
1 answer
344 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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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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1 vote
1 answer
257 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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6 votes
4 answers
2k 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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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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1 answer
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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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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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1 answer
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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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0 votes
1 answer
86 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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0 votes
1 answer
62 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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1 vote
2 answers
111 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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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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0 votes
0 answers
47 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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0 votes
1 answer
210 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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1 vote
2 answers
4k 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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0 votes
1 answer
41 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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1 vote
1 answer
745 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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0 votes
2 answers
146 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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0 votes
1 answer
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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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