Questions tagged [industrial]

Questions related to electronic circuit design in industrial environments where environmental conditions such as temperature, humidity, vibration, noise are significant and require careful consideration above what would be needed in commercial settings. Includes questions on Industrial Grade parts.

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Do I need a current limiting resistor with an industrial rail DIN optocoupler?

I'm going to use this industrial opto-coupler: Optocoupleur RS PRO, montage Rail DIN, 6 mA In its specs document they don't mention the need of a current limiting resistor. I always add a current ...
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2 answers
60 views

DC Vacuum Contactor Coil - Failed Close

I am using a 350A DC, normally open vacuum contactor that experiences a failure while the contactor is closed (coil energized by 24VDC) for an industrial 1000VDC application. The manifests as the ...
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48 views

24V input shutdown-latch - is it a good idea?

I want to protect my circuit by adding the ability to the MCU, to turn-off the power supply (and by this also turn itself off), in case of certain failure conditions are met. One of it would be ...
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Can inductive sensors work on anodized aluminum?

I was wondering if an industrial-grade inductive sensor can detect an anodized aluminum plate. From what I know, based on the working principle of these sensors (basically the metal is detected by its ...
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1 vote
4 answers
174 views

Microcontroller 24V digital output

For a microcontroller generating a 20mA industrial digital output. What kind of setup is best? I'm considering: Microcontroller pin driving a low current N-FET to pull a 24V signal to ground. But ...
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Estimating total amperage for multiple devices on a 120/208 three phase service

I've been poking at this question for a bit, and while I think I have the answer, I'm not entirely sure. I think I just need a sanity check from all the competing methods from coworkers. Assume I have ...
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Pulse duration detection evaluation (opto) LT-22222 from dragino

My question seems simple but i can't find the answer on documentation. (or I don’t have enough skillz) I have this energy meter with pulse output: https://cdn.store-factory.com/www.compteur-energie....
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4 answers
214 views

200Hz electrical noise on an industrial machine

The problem I've got an industrial controller that takes an N-type thermocouple and scales its range (0-1300°C) to a 0-10V DC output signal. (For reference, the module is this: https://www.status.co....
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ESP8266 GPIO pin improvement

Is it possible to make this connection to an ESP8266 pin? I saw this at Ruggeduino and tried to implement it for the ESP8266. Below is the schematic: Here's my reference: This type of diode: Here's ...
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2 votes
0 answers
86 views

What do you do with 5 VDC at 150 amps? [closed]

I recently picked up a switching power supply that is rated for 5 VDC at 150 A wondering in industry where you might find that being used. I was told possibly older industrial computers still running ...
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146 views

PNP high-side switching with logic reverse

I am trying to design a High side switch(24V,10A) using a PNP Transistor, the switch control signal is PNP or NPN from the PLC output. How to select the control signal type (NPN or PNP) using a ...
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I need help with SCCR

I work as and E/E intern for a industrial panel company. A customer wants a 30kA SCCR panel. The input power is 3 phase 460V, an unknown distance from the main panel in the customer factory. Inside ...
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0-10V control signal for valve actuator from -10/10V DAC

I'm trying to control a valve actuator (24VAC power) that uses a 0-10V voltage input signal which only uses one wire, with a USB multifunction board which has a +-10V DAC control output which uses two ...
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1 answer
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Industrial IO board ST X-NUCLEO-PLC01A1 - design features

For a project I want to buy an X-NUCLEO-PLC01A1. So I studied the schematic and datasheets (CLT01-38SQ7)(VNI8200XP), but there are still some points that confuse me. What is the purpose of D20 - is ...
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3 answers
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What replaces SD card in industrial applications

I am using a SOM (something with Zynq 7000) that boots from an SD. While SD provides a lot of storage, i can't use it in industrial applications in a long term- it is not rated for temperature range ...
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2 answers
65 views

Contact deterioration, arc forming on high power DC switcher

I have a problem on a switch contactor on high power load control. It is expected because the load is up to 200 amperes at 48V DC, resistive load. How do I protect the contacts from a full load turn ...
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2 answers
95 views

PCB Review - LM5164

What you guys think about my LM5164 power board? Tried to copy the demo board version, 15-100Vin - 12Vout@1A.
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1 answer
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Looking for layout advice for industrial environment using ATMEGA328P

I need some advice on the layout of my board. I'm using Atmega328P and intend to use it in industrial environments. The purpose is to take a 30Vdc max input and step down to 5V with LM317 to power the ...
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0 votes
1 answer
61 views

Looking for all-encompassing website to download standards (UL, NEC, ISO, etc) [closed]

TLDR : Frustrated with the way standards are handled in my industry bc they are important, looking for one website that does it all. I am a controls engineer and have been in this industry for about 7 ...
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1 answer
76 views

No change in output signal from SICK encoder

I have a SICK DFS20A-A2PBD065536 incremental encoder and I am powering it with 24V DC. When I rotate the shaft, I do not get any change in either A or B output signals (Its a quadrature encoder). We ...
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1 vote
3 answers
183 views

Dimmer for electric underfloor heating element [closed]

I'm new here and a mechanical engineer who knows just a little about electronics, so please excuse any ignorance. We have electric underfloor heating in our kitchen. It seems the thermostatic probe ...
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2 answers
164 views

Writing code for new microcontroller/module without examples [closed]

I started learning embedded systems programming(after a long time when I stopped) and I see that most microcontroller boards/modules come with some set of example codes which can be used a base to ...
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-1 votes
2 answers
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What standard must a component/ device comply with to be industrial grade?

I am looking at an iot device that claims to be industrial grade. It meets standards such as UL60950-1 and has an operating temperature -40 --> 85C so looks good but is that enough? Exactly what ...
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Wiring 24V Soleniod valve

I'm having an issue with connecting the industrial pneumatic valve with 2 coils to relays. EDIT: I have connected it like this in the scheme below. Coils are connected to NO port on the relay, ...
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1 vote
1 answer
73 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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1 answer
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How does industrial application interface a switch that is several meters away

I am wondering on how the industrial section deal with situations where a button is several meters away from the controller. Is there a device that specifically handle the debouncing/filtering/...
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16 votes
6 answers
2k views

How do professional designs compensate for offset voltage in opamps?

I am new to electronics and have been told in class to always add precision potentiometers to compensate for input offset voltages in opamps for signal conditioning. My concern is that this offset ...
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1 vote
0 answers
62 views

Sprague Vitamin Q High Voltage (25 kV) Power Capacitor

Might any of you know more details about these high voltage capacitors? Specifically: What are they used for? How are they constructed? (e.g. glass-sealed paper in oil) Are they of value, and if so, ...
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Methods to ruggedise a USB3.0 type A port

I am developing a carrier board for a autonomous navigation robot. I need to change the USB 3.0 type A ports to ensure a reliable connection in a rough terrain. I am familiar with some methods as: ...
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2 votes
1 answer
680 views

How can I use 24V DC input for Arduino digital pins?

In this circuit, switches should be connected to 24V DC and arduino pins should check whether switches are on or off to control led behaviour. I don't know how to use 24VDC for this situation. I would ...
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3 votes
1 answer
128 views

Is it safe to bundle together 380V cable + 24V signal cable + network cable?

I have the following cables between two machines: 380V 3-phase power cable 24V signal cable EtherCAT cable I would like to create an interface using a modular connector such as the one in the ...
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1 answer
64 views

Choosing industrial grade components after a consumer grade proof of concept

I assembled a basic prototype with an ATSAMD21G18 based microcontroller and what I believe are consumer grade sensors (LSM6DSOX, LIS3MDL) to test out a proof of concept for product that would need to ...
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What is the purpose of these coils in contactor auxiliary contacts?

Can someone please tell me what the function of this module, and more specifically, the curley wires on top of this contactor? It looks like the wires go to the same terminals as the main contactor ...
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1 vote
1 answer
81 views

Control Board with simple logic

We are using an old electrical system in industry. My task is to digitalise it. As i saw, PLC is too expensive and large scale for our operation. Also, microcontroller needs programming which makes ...
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1 vote
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Is this an elegant approach for a simple, debounced tank level controller?

I am interfacing some industrial (24v) process control equipment to some new projects in the embedded realm of electronics (3.3/5V small signal) and am coming up with some simple solutions for ...
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1 vote
0 answers
57 views

Small connector alternative for 10/100base Ethernet [duplicate]

I have been looking for a small connector that I can use for Ethernet 10/100 base communication. There were some similar discussions here about the same topic, but I couldn't find a solid answer. In ...
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1 vote
1 answer
261 views

What is the purpose of this PLC circuit?

I am reverse engineering the PLC I/O module. One output consists of a Smart Switch with 3 additional components. Obviously, this is some kind of protection. But how does it work? Updated: PCB ...
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1 vote
1 answer
54 views

suggestions for how to implement a weird VFD jog mode?

I'm a total noob at electronics, but my employer has asked me to try to program a replacement VFD on our industrial stone-cutting saw. Everything works on it now, but I need to figure out how to ...
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2 answers
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Do these fluorescents contain ballast and starters?

I will probably buy some used fluorescent lamps to grow vegetables indoors for my project. As I am aware fluorescent lamps need ballast and starter. I don't have experience with fluoresent lamps and ...
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1 vote
2 answers
33 views

Is a Synchronous Step-Down Converter powered from industrial 24v a good choice to power a 3.3 volt MCU and sensor ic?

I am building a sensor that will be powered from a 24v industrial power supply. The board will contain a 3.3 Volt MCU and sensor IC. Is it a good idea to use a synchronous step-down converter and just ...
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0 answers
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Improve protection of device that got damaged by a primary side short

Today I swapped one of our devices that got damaged by the customer during installation. The device consists of a base board with several modules (power supply, IO cards, processor board, display+USB, ...
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1 vote
1 answer
189 views

What is the intended use of the 400 Hz-rated power supply on osciloscopes?

The power supply of many oscilloscopes and other test equipment from different manufactures are commonly rated for 400 Hz operation. For example, Tektronics MDO3000 is rated to work at 400 Hz at 115 ...
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-1 votes
1 answer
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Fuel Level Sensor Safety

I'm looking up fuel level sensor manufacturers (Omnicomm, Technoton etc) and noticed that a lot of them offer capacitive fuel sensors for all types of fuel. However, based on my understanding, ...
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4 votes
1 answer
598 views

Why do vibration sensors use a negative voltage?

I've started looking at some industrial vibration monitoring sensors for a project and it seems like there's a number of brands that use negative outputs voltages. Many are eddy current sensors with ...
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3 votes
1 answer
159 views

Legal for trade weighing using a PLC

We have a project where we need to weigh product material for selling to customers. This is a project installed in Europe. This is an industrial product line performing material manufacturing, ...
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1 vote
3 answers
630 views

RMS power and phase angle control

We have a piece of industrial equipment using a phase angle controller (PAC), and are having some issues calculating the RMS power used by the load. Personally I am of the opinion that you measure ...
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3 answers
132 views

Battery systems for 440v industrial motors

Are there systems utilizing batteries to start large (25hp - 50hp) 440v 3-phase electric motors, thereby eliminating spikes to the supply grid?
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1 answer
70 views

different types of smps [closed]

I need a 12v 5A power supply for a heating element. I found out there are two main types of smps: first one is mounted in a metallic case and usually cooled by fan (in some websites it is called "...
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Is there a SSR like device that can switch at kHz frequencies?

I'm designing an industrial control system that incorporates several peltier devices. As I understand it, these devices are more efficient when driven with a constant voltage, vs being cycled every ...
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3 answers
258 views

What could be the reason for chip capacitor failure due to silicone potting?

Is silicone potting of PCB board beneficial or risky? What could be the best material for encapsulating a power supply board? I used 2 part mixed silicone potting compound for encapsulating a ...
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