Problem: Robust, weather-resistant actuators were required for an Indian desalination scheme.

Solution: The Nemmeli plant in Chennai is the first desalination scheme in India to adopt electric actuators for plant automation. AUMA was selected to supply over 250 electric actuators due to the product quality, local support and long-standing expertise supplying India’s water sector that it offered.

The actuators are integrated with fieldbus interfaces which comply with the Modbus protocol used by the desalination plant’s distributed control system.  The incorporation of redundant line topology enhances security as back-up data transmission connectivity is provided for all actuators linked to the fieldbus system.
The 81,000 square metre Nemmeli plant, has capacity to treat 100 million litres of sea water per day. Reverse osmosis membranes convert sea water into potable water which is supplied to Southern Chennai.