Unitel Technologies adopts an agnostic philosophy towards the selection of a control system. We have designed and built turnkey projects using the Emerson Delta V, Honeywell and the Siemens system.
When not otherwise specified by the customer, we often use a control system comprising of an Allen Bradley ControlLogix PLC for process control, two PC based control stations operating Rockwell FactoryTalk View SE control software, and the interface control panel. The basic architecture of the control system is highly functional, very cost-effective, and can be readily adapted to meet both elementary and complex process mission requirements.
The basic architecture is outlined below.
A single interface control panel is used in this system. From a control function perspective, this panel houses the PLC’s power supply and I/O cards. The main PLC carries out the actual control process control function and will continue to operate in the event of a loss of communication to or a shutdown of the HMI work station. The interface control panel receives power at the required voltage from the client’s site