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CASE STUDY · MANUFACTURING

Industrial IoT Gateways Monitoring Manufacturing Machines for Predictive Maintenance

Powering Manufacturing 4.0 at the edge, the data our fanless Industrial IoT Gateways collect helps reduce downtime and maintenance costs whilst increasing reliability and equipment efficiency.

TypeCase study
Published12 Sep 2022
AuthorAndrew WhitehouseManaging Director
Reading time8 min

A software house that automates the capture, transformation and contextualisation of machine data came to us with a deployment problem. Its platform drives production monitoring, condition monitoring, predictive maintenance and process optimisation, but the hardware it ran on at each site was letting it down.

The job of that hardware is to act as an edge relay: take raw data from the machines, encrypt it, package it and send it to the cloud service for analysis. We recommended an IoT edge gateway built for the factory floor, and delivered it imaged with the customer’s software, ready to install. It is the kind of system we supply across manufacturing and factory automation.

02Challenge

Why tower PCs struggled on the factory floor

The customer had been building and deploying tower PCs from commercial off-the-shelf parts, the kind of hardware usually found in a server room. On a factory floor that meant keeping the PC cool without drawing in dust and particles, and finding room for a large case where installation space was limited.

Factor Tower PC (before) IoT edge gateway (after)
Cooling Fans and vents that draw in dust Fanless, passively cooled
Moving parts Fans and often spinning drives None, for shock and vibration resistance
Size Tower case needing floor or cabinet space Compact, mounts on or near the machine
Power Mains PSU 6–36 V DC wide input
Temperature Office conditions Down to −40 °C and up to 70 °C (extended builds)
Machine I/O Add-in cards and adapters Serial, digital I/O and PoE built in
Brief · 4 checksEdge relay

The brief, and how the gateway met it

The customer wanted hardware intended for manufacturing environments, not adapted to them.

  1. 01

    Compact and reliable in harsh environments

    A small fanless chassis with no moving parts, extended-temperature builds rated −40 to 70 °C, and protection against the dust and debris of a machine shop.

  2. 02

    Plug-and-play data collection from PLCs

    Three configurable RS-232/422/485 serial ports and three Gigabit Ethernet ports for PLCs and industrial protocols such as Modbus.

  3. 03

    Simple connection to external sensors

    Four digital inputs and four digital outputs, two USB 3.2 ports and optional dual 802.3af PoE to power sensors and cameras.

  4. 04

    Remote edge management

    Spare Ethernet ports plus Wi-Fi 6 and 4G/5G expansion, so the team can diagnose issues and push updates without a site visit.

Gateway

Wiring it to the machines

Deployed alongside remote I/O modules and industrial protocol gateways, the iEP-5000G connects to the sensors, actuators, machines and computers on a factory floor. Many PLCs and remote I/O modules speak Modbus, which our Modbus explainer covers, and for wiring the gateway’s digital inputs and outputs to machine signals, our DIO vs GPIO guide explains why isolation matters.

Data flow · 5 stages Machine to cloud

From machine data to the cloud

The gateway sits between the machines and the customer's cloud service, doing the work a server-room PC used to do.

  1. Image

    Before dispatch

    We loaded Windows 10 IoT with the customer’s software stack and set the BIOS, so every gateway arrived ready to run.

  2. Collect

    PLCs and sensors

    Machine data comes in over serial, Ethernet and digital inputs from PLCs, sensors and remote I/O modules.

  3. Secure

    Encrypt and package

    The gateway encrypts the raw data and packages it for transfer.

  4. Relay

    Ethernet, Wi-Fi or cellular

    Packaged data is sent to the cloud service for analysis, over whichever link the site has.

  5. Manage

    Remote

    Issues are diagnosed and updates pushed to the gateway remotely, without a site visit.

An industrial IoT gateway runs silently in hot and cold environments with no fans, has no moving parts to fail under vibration, and keeps out the dust and debris that end a desktop’s life.

Andrew Whitehouse Managing Director, Things Embedded
Results · 4 outcomesFactory floor

Installation simplified, hardware failures removed

The move from tower PCs to an IoT edge gateway changed how the customer deploys at every site.

  1. Outcome 01

    Out-of-box deployment

    Gateways arrive imaged and configured, so installation is mounting, wiring and power.

  2. Outcome 02

    No more heat and dust failures

    Fanless, sealed hardware replaced the tower PCs that struggled with cooling and particle ingress.

  3. Outcome 03

    Fits where the machines are

    The compact chassis goes on or beside the machine instead of needing cabinet or floor space.

  4. Outcome 04

    Managed from anywhere

    Remote diagnostics and updates replace site visits, wherever the customer's machines are.

05FAQs

IoT gateway FAQs

  1. What Is Predictive Maintenance?

    Predictive maintenance uses data from sensors on machines, such as vibration, temperature and current, to predict when a part is likely to fail, so it can be repaired just before it breaks. It avoids both unplanned breakdowns and the wasted cost of replacing parts on a fixed schedule.

  2. What Is Condition Monitoring?

    Condition monitoring is measuring a machine’s health continuously or at regular intervals, using parameters such as vibration, temperature, oil quality, sound and electrical current, to detect changes that point to a developing fault. It turns breakdowns into planned repairs and is the data foundation that predictive maintenance is built on.

  3. What Is an IIoT Gateway?

    An IIoT (Industrial Internet of Things) gateway is a rugged edge computer that connects industrial equipment, such as PLCs, sensors, meters and machines, to a network or the cloud. It collects their data, translates between industrial and IT protocols, processes and secures it at the edge, and forwards the results.

  4. What Is Modbus?

    Modbus is an open communication protocol that lets industrial devices such as PLCs, sensors, meters, drives and HMIs exchange data. First published by Modicon in 1979, it uses a simple request and response model: one device asks for or writes values, and another replies. It runs over serial lines as Modbus RTU and over Ethernet as Modbus TCP.

  5. PoE vs PoE+ vs PoE++: The 802.3af, 802.3at and 802.3bt Standards

    PoE, PoE+ and PoE++ are the three generations of IEEE Power over Ethernet. PoE (802.3af) supplies about 15 W per port, PoE+ (802.3at) about 30 W, and PoE++ (802.3bt) 60 W (Type 3) or 90 W (Type 4). PoE and PoE+ use two of the four cable pairs; PoE++ can use all four.

  6. PoE PD vs PSE: What Is the Difference?

    In a PoE link the PSE (power sourcing equipment) supplies the power and the PD (powered device) draws it. A PoE switch, injector or PoE computer acting as a source is the PSE; a camera, phone, access point or PoE-powered display is the PD. The IEEE 802.3 standards define how the two detect, classify and power each other.

  7. What Are the Advantages of Fanless Computers?

    Fanless computers cool themselves passively, through a finned heatsink chassis and heat pipes, instead of a fan. With no moving parts and no airflow drawing in dirt, they are more reliable in dusty or vibrating places, silent, low maintenance and easy to seal, which is why they are the standard choice for industrial and embedded use.

  8. What Is the Industrial Temperature Range?

    The industrial temperature range is −40 to 85 °C: the grade an electronic component must operate across to be called industrial, compared with 0 to 70 °C for commercial parts. Rugged computers built from industrial-grade components typically run from −25 or −40 °C up to 70 °C as a complete system.

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