The Commander C300 universal process controller was launched in 1991. It enabled control of a single PID loop using a number of control strategies (for example, single loop, heat / cool and motorized valve). The C300 was available with a comprehensive I/O capability, custom linearizers and ramp / soak profiling capability.
In December 1998, the C300 was superseded by the C350 universal process controller, which in turn was superseded by the ControlMaster CM30 universal process controller. The CM30 uses ABB’s common instrumentation platform HMI and features a new, full color TFT display enabling both control loops in the new dual control template to be displayed simultaneously in a single operator view. The CM30 also features ethernet communications, profile control and bank control functionality as well as the features previously available on the C300. All features are accessible via the front panel of the controller without the need for PC configuration software.