Singapore Project 2013

We supplied numerous sets of these Auto Switchover (ASO) panels to the leading MNC in consumer products. These ASO panels are equipped with ABB AC500 PLC and CP600 HMI to monitor and to control inert gas cylinder supplies for laboratories.

Design Concept

Two cylinders are supplied in each ASO panel where the system is run automatically. One cylinder is priority and the other is on standby. Once the first cylinder is low, it gives an alarm and automatically switches over to the standby cylinder. This is to ensure continuous supply on the line. However, there is an option to manually operate the system.

During Emergency, the system have a local alarm and remote alarm monitoring to alert the operator. There is also auto shutdown, local EMO shutdown, and remote shutdown interface.




Front view of HMI Control Panel with EMO button and buzzer.


Side open interior view of HMI Controller with PLC and wirings.


Full view of HMI Controller panel.