DESCRIPTION:
Electrical engineering and automation services for cold storage warehouse
INDUSTRY:
Food storage warehouse
FOCUS:
Refrigeration system automation
OBJECTIVE:
The first cold storage chamber had to be functional in 3 months from start of project, after which, one chamber had to be finalized every week.
SOLUTION:
- Rittal VX25 enclosures
- Siemens PLC S7 1214C
- Siemens HMI TP 1200 Comfort
- Frequency drives – Danfoss VLT AQUA Drive FC 202
- SCADA – Ignition (Inductive Automation)
PROJECT DURATION:
5 months from PO to commissioning
THE PROJECT COMPRISED OF:
In a recent project, we undertook the complete electrical engineering and automation for eight cold storage chambers, each with a 300 sqm volume, designed to operate between 15 and -20 degrees Celsius.
Key features included:
- Dual compressor system: each chamber has one compressor with frequency drive control for variable load management and another with a star-double start for reliable operation, ensuring optimal temperature control and energy efficiency.
- Optimal vaporizer operation: our engineers implemented critical control and safety functions for the vaporizers, including:
- Pre-heating
- Heating
- Cooling
- Defrosting
- Compressor protection logic: our engineers implemented critical control and safety functions for the compressors, including:
- High discharge pressure protection
- Low suction Pressure protection
- Motor overload protection
- High superheat protection (including the refrigerant curve implementation for pressure to saturated temperature conversion)
- PLC and HMI: For each chamber, we built a local automation panel, based on Siemens S7-1214C PLC, TP1200 Comfort HMI, and Danfoss VLT AQUA Drive FC 202, ensuring precise control and easy monitoring of the system.
- SCADA System Integration: Utilizing Ignition SCADA, we created a cohesive system for comprehensive visualization and control, enabling:
- Real-time and historical data analysis
- Temperature monitoring and energy consumption tracking
- Automatic Excel-format data archiving sent to the client’s email at preset intervals
- SMS transmission for all safety related alarms
