Senior PLC Engineer - Automation

Kuhltherm; Ahmedabad District; On-site; INR 900,000 - 1,500,000; Full time

Benefits offered by this job

Health Insurance

Job summary

Kuhltherm is seeking an experienced automation engineer to design and implement robust control systems. You will develop PLC programs, tune PID controllers, and integrate sensors and actuators for precise process control.

You will work with Unitronics and Delta PLCs, and collaborate with mechanical teams to optimize valve curves and packaging. A strong background in BLDC motor control and industrial protocols is required.

Qualifications

• Experience in machine automation and precision process control.
• Strong knowledge of ST and LD programming.
• Hands-on safety and commissioning experience with PLC systems.

Responsibilities

• Architect, write and optimize control code in ST and LD for production-ready systems.
• Develop closed-loop control for differential pressure, flow rate and multi-point temperature.
• Configure PLCs (Unitronics, Delta) and other major ecosystems; support cross-compatibility.

Skills

Structured Text

Ladder Logic

Unitronics PLCs

Delta PLCs

Beckhoff

Siemens

Omron

PID Control

BLDC Motors

Motor Drivers

VFDs

Modbus RTU/TCP

CANopen

BACnet

OPC UA / MQTT

HMI Development

Sensor Integration

Education

Bachelors or Masters in Electrical, Electronics, Instrumentation & Control, or Mechatronics Engineering

Tools

Unitronics

Delta

Beckhoff

Siemens

Omron

Job description

Role & responsibilities

1. Control Architecture & Advanced Programming

• Architect, write, and optimize robust control code using Structured Text (ST) and Ladder Logic (LD) from concept to production.
• Develop closed-loop control algorithms (PID, cascade, feed-forward) for dynamic physical variables such as differential pressure, continuous flow rate, and multi-point temperature regulation.
• Program and configure Unitronics (UniLogic/VisiLogic) and Delta (ISPSoft/DIAStudio) and equivalent platforms, while maintaining adaptability across other major PLC ecosystems.

2. Motion, Motor Control & Actuation

• Configure, tune, and commission BLDC (Brushless DC) motors, smart pumps, EC fans, and proportional modulating control valves.
• Implement speed/torque control strategies and monitor motor health diagnostics (current draw, vibration, thermal feedback) over digital fieldbuses.

3. Instrumentation & Sensor Integration

• Select, scale, calibrate, and integrate high-precision analog and digital sensors:
  • Pressure transmitters and differential pressure transducers
  • Flow meters (coriolis, ultrasonic, magnetic, turbine)
  • Multi-point RTDs (PT100/PT1000) and high-accuracy temperature sensors
  • Liquid leak detection sensors and conductivity meters
• Implement signal conditioning, filtering (e.g., moving averages, debounce), and sensor fault-detection routines.

4. Protocol & Network Integration

• Design and commission communication networks integrating PLCs, drives, sensors, and upper-level monitoring systems.
• Deep implementation of industrial protocols: Modbus RTU/TCP, BACnet IP/MSTP, CANopen, Ethernet/IP, and OPC UA / MQTT, SMTP for telemetry and remote diagnostics.

5. HMI Development & Diagnostics

• Develop intuitive, real-time HMI interfaces for monitoring critical process parameters, alarm handling, event logging, and hardware diagnostics.

6. Cross-Functional Collaboration & Innovation

• Partner with the Mechanical/Design Team to align fluid dynamics, valve curves, and mechanical packaging with control response requirements.
• Collaborate with the Production/Manufacturing Team to define end-of-line (EOL) testing sequences, automated test benches, and clear commissioning SOPs.
• Drive continuous product innovationevaluating next-generation controllers, smart instrumentation, and energy-efficient control methodologies.

Preferred candidate profile

• Experience: 7 to 10 years of hands-on experience in machine automation, precision process control, or complex mechatronics design.
• PLC Hardware: Proven, in-depth track record programming Unitronics and Delta PLCs. Broad knowledge of platforms like Beckhoff, Siemens, or Omron is an added advantage.
• Languages: High fluency in Structured Text (ST) and Ladder Logic (LD).
• Motor Control: Strong working experience with BLDC motors, motor drivers, VFDs, and electronic commutation systems.
• Sensor/Instrument Expertise: Deep understanding of 420 mA, 010 V, IO-Link, and digital sensor interfaces, noise suppression, and calibration practices.
• Communication Protocols: Thorough working knowledge of Modbus (RTU/TCP), CANopen, BACnet, and OPC UA / MQTT, SMTP.
• Education: Bachelors or Masters degree in Electrical, Electronics, Instrumentation & Control, or Mechatronics Engineering.

Perks and benefits

Health Insurance