Instrumentation Engineer PLC & SCADA

Role & responsibilities

Troubleshoot and maintain PLC, HMI and SCADA systems.

• Diagnose PLC input/output, communication and programming-related faults.

• Troubleshoot field instruments such as:

• Flow meters

• Level transmitters

• Pressure transmitters

• pH sensors

• ORP sensors

• Conductivity/TDS sensors

• DO sensors

• Turbidity sensors

• Control valves

• Motorized valves

• Limit switches

• Check and troubleshoot DI/DO/AI/AO signals.

• Troubleshoot PLC panels, control panels, relays, contactors, SMPS and signal isolators.

• Identify and rectify PLC communication faults between PLC, HMI, SCADA, VFDs and field instruments.

• Perform calibration and basic troubleshooting of instrumentation.

• Monitor and maintain automatic sequences and interlocks of STP/ETP/WTP plants.

• Understand and troubleshoot Auto/Manual operation logic.

• Coordinate with electrical and mechanical teams during breakdowns.

• Maintain instrumentation and automation records, calibration reports and breakdown reports.

• Support preventive maintenance of PLC, SCADA and field instrumentation.

• Assist in modification and improvement of PLC logic and plant automation.

• Ensure minimum downtime of the automation system.

Preferred candidate profile

2 years of relevant experience in industrial automation, instrumentation, PLC/SCADA or water/wastewater treatment plants.

Candidates with strong hands-on PLC troubleshooting experience will be preferred.