Welcome to Automation WA by Nessie Services Perth Western Australia

 Industrial Automation Solutions, PLC Programming & Control Systems

Siemens Simatic Step 7 Projects Refrigeration Control

Nessie Services was asked to develop a refrigeration control

with interlocks to a GEA dual screw compressor.

The glycol is controlled by temperature and pressure (PID loops).

Of course the HMI is operator friendly as usual

(handling possible without reading manual).

3 redundant pump sets for Cooling Tower,

primary and secondary Glycol (each 7.5KW)

with Schneider Softstarters and Siemens Sinamics VSD's (via Profibus).

An ammonia detector shuts down the plant in case of a leak and opens

an automatic roof top ventilator.

Nessie Services provided:

electrical drawings

electrical drawing

control panel layout

PLC programming

HMI development and programming

HMI main screen

functional description

functional description



Siemens Simatic S7 315 with digital and analog IO's

Siemens HMI: MP277 10" Touch Panel

Nessie Services, your partner for quality, reliability and efficiency!

Our Services:

- Project Management

- Control Systems

- PLC Troubleshooting / Fault finding, on site or via remote access

- PLC Backup

- PLC Parts

- PLC Conversion / Upgrade

- Process Monitoring System

- Operator optimised PLC/HMI/Scada development

- After Sales Service and programmed maintenance

- Maintenance Department and / or Operator Training including Manuals

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