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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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Controlling button press on key fob using microcontroller

I have a battery-powered fob remote, and I want to convert it from being operated via a manual button press to being controlled by a microcontroller. The fob looks like this: After making some ...
teeeeee's user avatar
  • 737
0 votes
0 answers
32 views

Control cabinet rules

I am building an electrical enclosure box equipped with a smart relay (PLC) and containing a 60W 24VDC power supply which is supplied from 230V AC. The PLC controlles a small 15W DC motor and ...
Gurul_01's user avatar
2 votes
2 answers
1k views

Difference between interlock and permissive

There seems to be somewhat differing and sometimes overlapping definitions of these terms. Below are definitions found in The Automation, Systems, and Instrumentation Dictionary, Fourth Edition by ISA....
ivvi's user avatar
  • 121
2 votes
2 answers
379 views

Circuit for auto power off

I am looking for a circuit that can power off automatically after some time (i.e., ten minutes, but accuracy is not important here). When the circuit cuts the power, the power consumption should be as ...
Mads Aggerholm's user avatar
1 vote
1 answer
84 views

How does deceleration work on a servo drive?

I'm confused by the fact that PLCopen MC-blocks used to control servo drives from a PLC have separate acceleration and deceleration parameter. For instance, MC_MoveAbsolute. I don't understand what ...
relatively_random's user avatar
1 vote
0 answers
105 views

How to tune PID (KP, KI, KD) for an actuator attached to a butterfly valve

I'm currently tuning an actuator that was unstable. The person before me set the values to: KP = 0.04, KI = 0.07 and KD = 0. The system would oscillate between 90% open and 10% open and never reach ...
Javier's user avatar
  • 11
1 vote
3 answers
340 views

Conditionally switching 3-phase motor direction using only one contactor

I am creating a schematic for my machine which is supposed to do the following with the push of a button. All motors are three-phase AC motors. Run Motor 1 CW until it hits its right limit switch. ...
Burak Demirelli's user avatar
0 votes
0 answers
59 views

Microcontroller Automated Heating Process

I am working on a project that requires precise temperature control of a heating pad. Currently, the heating pad is directly connected to a power supply and I used thermo coupler chips with a Arduino ...
Wei Z's user avatar
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0 answers
128 views

PI integral anti-windup with dynamic saturation limit

I have a controller to control the power output of a solar inverter and I'm not sure how to implement the integral anti-windup. The problem I'm facing is the actual output power is dependent on the ...
Wanderer's user avatar
0 votes
1 answer
187 views

Inductive proximity sensors: size vs. sensitivity

My target is a 20mm long, stainless steel, socket head, M3 screw with head facing the sensor. How will sensor sensitivity, i.e. maximum sensing distance, change with different sensor size? I'm looking ...
Paul Jurczak's user avatar
1 vote
1 answer
74 views

Bad GSM network automated testing

We are using a 2G modem controlled by an MCU in our device and we want to do an automated test routine that tests our firmware for bad mobile network scenario. How can we create a system where a ...
EarthLord's user avatar
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0 answers
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What is the maximum data rate of AS-Interface?

After online search, I could not find exact information except some marketing words. It is said that it supports up to 100m and can be extended up to 600m but there is no information of maximum data ...
alfonso's user avatar
  • 457
0 votes
1 answer
61 views

Circuit design help for automating fan from another device

I'm trying to design an automation for the status/current setting of my one electrical motor (1-6 variable settings) to drive a few behaviors to another motor or possibly two. The electronic devices ...
No-Reservations's user avatar
0 votes
1 answer
481 views

SCPI for SIGLENT SDG2042X

I have been writing python automating scripts for an O-scope and an AWG. I am having issues sending Arbitrary waveforms to the AWG, the model is Siglent SDG2042X. I have the manual and it has an ...
Frank's user avatar
  • 15
-1 votes
1 answer
75 views

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 ...
Sadat Rafi's user avatar
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2 votes
0 answers
326 views

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. ...
StealthRT's user avatar
  • 773
0 votes
2 answers
849 views

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 ...
DaveInPA's user avatar
0 votes
0 answers
63 views

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 ...
RICARDO GARCIA's user avatar
1 vote
1 answer
173 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 ...
Curious Cosmopolitan's user avatar
0 votes
0 answers
75 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 ...
ennam's user avatar
  • 9
-1 votes
1 answer
148 views

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 ...
Dave's user avatar
  • 105
0 votes
1 answer
210 views

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 ...
user2003052's user avatar
1 vote
2 answers
1k views

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). I don't understand the ...
Nik's user avatar
  • 53
0 votes
2 answers
562 views

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 ...
Douglas Krugman's user avatar
0 votes
2 answers
64 views

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 ...
Eduard's user avatar
  • 103
0 votes
0 answers
339 views

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 ...
Fahad Ali Sarwar's user avatar
0 votes
1 answer
442 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 ...
Confused's user avatar
  • 2,388
3 votes
2 answers
223 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 ...
B.Baker's user avatar
  • 85
0 votes
0 answers
48 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 ...
LukasL's user avatar
  • 128
1 vote
1 answer
127 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 ...
Marcin Jędrzejczyk's user avatar
0 votes
0 answers
176 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 ...
Jashanjot Kaur's user avatar
1 vote
1 answer
134 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 ...
Adnan Baig's user avatar
1 vote
0 answers
152 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 (...
Jashanjot Kaur's user avatar
0 votes
1 answer
54 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. ...
A. Kvåle's user avatar
  • 101
1 vote
0 answers
121 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 "...
Enzo P. Izrrae's user avatar
0 votes
1 answer
265 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 ...
Michael's user avatar
  • 195
2 votes
2 answers
72 views

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 (< ...
Stephen Kingston's user avatar
-1 votes
1 answer
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 ...
Julian Ar.'s user avatar
0 votes
1 answer
380 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 ...
gantenbein162's user avatar
0 votes
1 answer
121 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 ...
ncbdrck's user avatar
0 votes
1 answer
63 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 ...
Mubashir Soomro's user avatar
2 votes
1 answer
511 views

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 V, directly from a solar array. This was previously switched manually by a light switch, but after my uncle's ...
Excalibur's user avatar
  • 121
0 votes
1 answer
117 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?
xiaoxi's user avatar
  • 3
0 votes
1 answer
56 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....
TheSaint's user avatar
3 votes
1 answer
734 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 (...
jarnbjo's user avatar
  • 221
0 votes
1 answer
38 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 ...
Bader Khalid's user avatar
2 votes
1 answer
717 views

AC to DC conversion without neutral

I want to replace my wall switch with a smart switch which can be controlled by an ESP32. I need to use AC to DC conversion to get 3.3 V from 240 V, 50 Hz. Some of the wall outlets have only phase and ...
abab's user avatar
  • 133
6 votes
4 answers
5k 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 ...
zageek's user avatar
  • 61
0 votes
1 answer
99 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 ...
Rapiz's user avatar
  • 3
0 votes
1 answer
54 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 ...
Vinlar's user avatar
  • 115