Mission-critical data centers

Controls for
critical
infrastructure.

Sam Khalaf · Controls Engineer

PLC / HMI / SCADA. BMS / EMS. Industrial networks. Connecting field signals, control logic, and system visibility—with a hands-on foundation in troubleshooting and validation.

Ignition Core CertifiedInductive Automation
Dual B.S.E.Electrical + Computer Engineering
Infrastructure overviewDC-LAB / BMS · EMS
SIMULATION
CHW supply6.7°CSimulated temperature
Plant ΔT5.5KReturn − supply
Active alarms00Cooling layer
Illustrative data-center controls overviewA fictional server hall with six racks, a cooling unit, a power unit and a network gateway. The selected layer highlights a conceptual signal path. This is not a construction diagram. DC-LAB / HALL 01ILLUSTRATIVE TOPOLOGY CONCEPT / NOT TO SCALE R01R02R03R04R05R06 COOLING POWER OT GATEWAY IT HALL CHILLED WATER / SUPPLY + RETURN
CHW supplyILLUSTRATIVE TREND
Synthetic chilled-water supply temperature trend6.7 °C
No active cooling alarmsNOMINAL

Independent interface concept · Synthetic data only · No client or facility affiliation.

Portfolio / Engineering + Systems IntegrationExplore the system

Platforms
+ protocols

IgnitionHMI / SCADA
Allen-BradleySTUDIO 5000
SiemensTIA PORTAL / STEP 7
BACnet/IPBUILDING AUTOMATION

01Engineering focus

From the field device
to the supervisory layer.

A controls-focused approach to mission-critical infrastructure: understand the signal, follow the logic, verify communication, and make system behavior visible.

01

BMS / EMS & SCADA

Equipment visibility, reusable interfaces, alarm handling, and trends. Educational Ignition work connects building systems to clear operator views.

02

PLC & field controls

Trace HMI alarms through ladder logic, permissives, interlocks, I/O, sensors, actuators, and drives.

03

Industrial networks

Connect field devices and supervisory systems. Practice switching, VLANs, routing, and redundancy in independent networking labs.

04

Diagnostics & validation

Work from schematics, measurements, and test evidence to isolate faults, verify system behavior, and document the result.

One connected viewHardware → software.
01 / ACQUIREField I/O
02 / CONTROLPLC logic
03 / CONNECTOT networks
04 / VISUALIZEHMI / SCADA

02Project library

Engineering work.
Beyond the interface.

PLC logic, feedback control, embedded sensing, and networked systems. Explore the project notes, development images, and technical reports behind the work.

Showing 12 projects

Allen-Bradley ladder logic motor control
PLC controlsPROJECT / 01

Allen-Bradley PLC logic

Start/stop control, seal-in logic, timers, counters, and alarm conditions—with an emphasis on fault tracing and production-style troubleshooting.

Studio 5000Ladder logicI/O
Explore project — Allen-Bradley PLC logic

Developed and reviewed Allen-Bradley ladder logic concepts using Studio 5000, including start/stop motor control, seal-in logic, timers, counters, interlocks, permissives, fault conditions, HMI alarm logic, and basic I/O troubleshooting. Focused on production-style troubleshooting, safe machine recovery, and reducing downtime.

Project materials · 3 images
Siemens TIA Portal ladder logic
PLC controlsPROJECT / 02

Siemens PLC logic

Machine sequences, function blocks, I/O mapping, and HMI alarm logic. Focused on understanding control behavior and tracing faults through an automated system.

TIA PortalSTEP 7Profinet
Explore project — Siemens PLC logic

Built and analyzed Siemens PLC logic using TIA Portal and STEP 7 concepts, including ladder logic, function blocks, timers, counters, memory bits, I/O mapping, Profinet device communication, HMI tag structure, alarm logic, and machine sequence control. Emphasized electrical diagnostics, PLC fault tracing, and structured troubleshooting for automated equipment.

Project materials · 3 images
Arduino Opta PLC ladder logic and control programming
PLC controlsPROJECT / 03

Arduino Opta PLC logic

Industrial-style control logic using timers, counters, permissives, and alarm handling. A practical exploration of I/O verification and structured machine diagnostics.

Arduino OptaDigital I/OInterlocks
Explore project — Arduino Opta PLC logic

Built and reviewed PLC control logic using the Arduino Opta PLC for industrial-style automation applications, including digital I/O control, ladder logic concepts, timers, counters, interlocks, permissives, memory bits, alarm handling, and machine sequence logic. Focused on electrical troubleshooting, input/output verification, fault tracing, safe machine recovery, and structured diagnostics for automated equipment.

Project materials · 3 images
Simulink anti-aliasing and waveform analysis
Modeling & circuitsPROJECT / 04

Control systems & signal analysis

Transfer functions, feedback systems, step response, and frequency-domain analysis, including aliasing and notch-filter behavior.

MATLABSimulinkFeedback
Explore project — Control systems & signal analysis

Modeled dynamic systems using transfer functions, feedback blocks, poles and zeros, step response, sinusoidal response, Bode/Nyquist analysis, Simulink workflows, aliasing analysis, and notch-filter response.

Project materials · 3 images
3D rendered Smart Shoe side profile
Embedded systemsPROJECT / 05

Smart Shoe sensing system

A wearable prototype connecting force sensors, ESP32 communication, and a Flutter dashboard—from early sketches and circuits to physical hardware and mobile visualization.

ESP32SensorsFlutter
Explore project — Smart Shoe sensing system
Robot following a white line in testing environment
RoboticsPROJECT / 06

Robot vision & proportional control

Camera-based line following using ROS image acquisition, Canny edge detection, Hough line extraction, and proportional steering control.

ROSComputer visionControl
Explore project — Robot vision & proportional control

Developed robot vision software for line following using ROS image acquisition, Canny edge detection, Hough line extraction, and proportional steering control.

Project materials · 2 images
DragonBoard embedded development platform
Embedded systemsPROJECT / 07

Embedded development platforms

Hands-on work across Arduino, Nexys A7 FPGA, DragonBoard, and TM4C123GXL platforms for sensing, communication, digital logic, and embedded debugging.

ArduinoNexys A7TM4C123GXL
Explore project — Embedded development platforms

Hands-on embedded systems work across Arduino, Nexys A7 FPGA, DragonBoard, and TM4C123GXL platforms. Used these boards for sensor integration, digital logic, UART/I2C communication, embedded debugging, and hardware/software validation.

Project materials · 4 images
UART, I2C, ADC, and embedded debugging project material
Embedded systemsPROJECT / 08

Serial interfaces & embedded debugging

UART communication, ADC conversion, I2C accelerometer reads, and LED control, with serial output used to verify embedded behavior.

UARTI2CADC
Explore project — Serial interfaces & embedded debugging

Configured UART communication, ADC conversion, I2C accelerometer reads, and LED control logic. Used serial output and debugging tools to verify embedded behavior.

Project materials · 1 image
VHDL simulation waveform for alcohol detection system
Embedded systemsPROJECT / 09

FPGA alcohol-detection logic

Sensor-driven VHDL decision logic with simulation waveforms for intoxication, distance, speed, and display outputs.

FPGAVHDLSimulation
Explore project — FPGA alcohol-detection logic

Developed VHDL logic for sensor-driven decision logic with simulation waveforms for intoxication, distance, speed, and display outputs.

Project materials · 1 image
Image transmission network project screenshot
NetworkingPROJECT / 10

Image transmission network

A socket-based image transmission system using client/server networking concepts and file-transfer workflows.

SocketsClient/serverFile transfer
Explore project — Image transmission network

Built a socket-based image transmission system using client/server networking concepts and file-transfer workflows.

Project materials · 1 image
LTspice operational amplifier schematic
Modeling & circuitsPROJECT / 11

Operational amplifier analysis

Op-amp configurations evaluated through LTspice simulation and lab measurements, comparing gain, clipping, waveforms, and hardware behavior.

LTspiceOp-ampsLab testing
Explore project — Operational amplifier analysis

Simulated and tested op-amp configurations in LTspice and lab measurements. Compared gain, clipping, waveform response, and measured hardware results.

Project materials · 2 images
MOSFET amplifier simulation
Modeling & circuitsPROJECT / 12

MOSFET amplifier validation

Common-source and source-follower amplifier behavior investigated through LTspice simulation and comparison with lab results.

LTspiceMOSFETsValidation
Explore project — MOSFET amplifier validation

Investigated common-source and source-follower MOSFET amplifier behavior through LTspice simulation and lab comparison.

Project materials · 1 image

03Technical toolkit

A toolkit built
for connected systems.

Controls software, electrical diagnostics, industrial communication, and the tools that connect field work to system-level understanding.

SCADA & building systemsIgnition · BMS/EMS · Alarm visualization
IgnitionBMS/EMSReusable equipment viewsUDTsAlarm visualizationTrend displaysSQLPythonGateway scripting
Industrial networksBACnet/IP · VLANs · Routing labs
BACnet/IPTCP/IPIndustrial EthernetVLANs802.1Q trunksInter-VLAN routingSTP / Rapid PVST+EtherChannelCisco Packet Tracer
PLC troubleshooting & controlsStudio 5000 · Siemens STEP 7 / TIA Portal · Ladder logic
Siemens STEP 7TIA PortalAllen-Bradley Studio 5000PLC programmingLadder logicPLC troubleshootingHMI developmentHMI alarmsI/O commissioningI/O checksNachi AX PLC & I/O
Industrial automation & machine controlsSensors & actuators · VFDs · Motors · Industrial panels
PLC-controlled equipmentIndustrial automationSensors & actuatorsVFDsMotor controlsRelaysSafety systemsIndustrial control panelsMachine startupsChangeoversMachine commissioningEquipment testing
Electrical diagnostics & troubleshootingSchematics · Multimeters · Oscilloscopes · Root-cause analysis
Electrical schematicsWiring verificationSignal tracingMultimetersContinuity checksPolarity checksImpedance checksSignal integrityRoot-cause analysisDowntime reductionOscilloscopesVector network analyzers (VNA)
SCADA, validation & reliabilitySCADA · SQL · Python · Instrumentation · Documentation
SCADA systemsSQL scriptingPython scriptingEquipment monitoringPost-repair validationInstrumentation setupTechnical documentationCorrective actionsCAPA documentationDowntime analysis
Automotive & EMC testingVector · ETAS INCA · CAN · EMC validation
ETAS INCAVector CANoeVector CANalyzerdSPACE ControlDeskLabVIEWECU/VCU FlashingDTC diagnosticsInstrumentation setupTechnical documentationCAN bus analysisBCI testingRadiated emissionsRadiated immunityESD testingTest setup validationOEM procedures
Electrical & mechanical design toolsAutoCAD Electrical · EPLAN Electric P8 · Fusion 360
AutoCADAutoCAD ElectricalEPLAN Electric P8Autodesk Fusion 360
Safety awareness & technical documentation

NFPA 70E · NFPA 79 · LOTO · UL 508A · ISO 26262 awareness · FMEA/DFMEA · Technical reporting · Downtime analysis · CAPA documentation

04Experience

Experience at
the equipment level.

Production troubleshooting, EMC testing, and ECU validation—experience built around machines, signals, repeatable checks, and documented evidence.

View full résumé
AAM logo

Controls Technician

AAM Oxford Forge

Oxford, MI

Through May 2026

  • Troubleshot and diagnosed faults on PLC-controlled production equipment using Siemens STEP 7/TIA Portal and Allen-Bradley Studio 5000, including HMI alarms, sensors, actuators, relays, motors, VFDs, and industrial control panels.
  • Supported HMI/SCADA interface development and data visibility using SQL and Python scripting for equipment monitoring and troubleshooting support.
  • Used ladder logic, electrical schematics, multimeters, and I/O checks to identify root causes of machine downtime and reduce repeat equipment failures.
  • Supported machine startups, changeovers, equipment testing, and post-repair validation to restore production safely and minimize interruptions.
  • Documented repairs, downtime causes, troubleshooting steps, and corrective actions.
  • Collaborated with maintenance, production, and engineering teams to quickly diagnose equipment issues, restore machine operation, and reduce downtime impact on production.
Applus+ logo

EMC Lab Test Technician

Applus+ Reliable

Madison Heights, MI

August 2024 – September 2025

  • Executed automotive EMC validation testing (BCI, radiated emissions/immunity, ESD) following OEM procedures, delivering traceable pass/fail engineering data.
  • Configured and validated EMC test setups including instrumentation, harnesses, fixtures, and DUT mounting to ensure repeatable and reliable test conditions.
  • Performed signal integrity, impedance, continuity, and polarity checks on test setups to minimize invalid data and reduce unnecessary retesting.
  • Troubleshot test failures by isolating setup-related issues from DUT behavior, documenting corrective actions and validated retest results.
  • Maintained detailed test logs, screenshots, plots, and compliance documentation.
Bosch logo

Junior Electrical Engineer Intern

Robert Bosch

XC-Multimedia Department · Plymouth, MI

March 2021 – September 2021

  • Supported ECU validation workflows through flashing, post-flash verification, CAN checks, and tool-based data review.
  • Used ETAS INCA and Vector CANoe/CANalyzer to log, review, and validate CAN signal behavior and communication quality.
  • Reviewed signals including speed, torque, temperature, pressure, throttle, boost, and lambda/AFR for plausibility and data integrity.
  • Diagnosed DTCs, CAN timeouts, sensor dropouts, and configuration mismatches using traces, logs, and measurement data.
  • Maintained structured notes and run documentation to support repeatable validation workflows.

05Background

Electrical engineering.
Systems thinking.

Professional portrait of Sam Khalaf

I earned dual BSE degrees in Electrical Engineering and Computer Engineering from the University of Michigan-Dearborn. My work connects controls, instrumentation, embedded systems, automotive validation, circuit analysis, and robotics.

The value I bring is practical execution: verify the setup, check the signal, isolate the fault, document the evidence, and keep the system reliable.

Education

University of Michigan-Dearborn CECS logo

University of Michigan-Dearborn

Dual BSE · Electrical Engineering
& Computer Engineering

September 2019 – April 2024

Technical foundationControl Systems, Automatic Control Systems, Circuits, Electronic Circuits, Digital Signal Processing, Microprocessors, Embedded Systems, Computer Networks, Robotics, and Vision Systems.

06Continuous learning

Focused learning.
Documented training.

Course completion and technical training records across robotics, automation, simulation, programming, analytics, and engineering tools.

Featured credential

Ignition Core Certification

Inductive Automation · Ignition 8.3 Credential also completed.

CORE CERTIFIED

35 training records · 7 provider groups

Nachi Robotics Systems Inc.Robot Programming & PLC 02 records
IBM / CourseraAI · Data Science · Prompt Engineering 12 records
LinkedIn LearningPLC · Automation · Technical Training 12 records
MATLAB / SimulinkEngineering Simulation 01 record
MicrosoftCareer Essentials 01 record
Google / CourseraData Analytics 02 records
CodecademyWeb Development 05 records

Start a conversation

Let’s connect
the next system.

For controls engineering and data-center opportunities involving PLC/HMI/SCADA, BMS/EMS, industrial networks, and systems integration.

Project material

Loading image…