1. ABB 2CSF202001R3900 is a two-wire display digital process controller. It offers simple on/off, cascade, and master/slave control of up to four pieces of electrical equipment. The front panel is equipped with 5 push buttons, a rotary switch and a 2x20 character LCD display.
2. This ABB controller is suitable for controlling a variety of electrical systems, including heating, air conditioning, ventilation and hot water systems. It has a PID or "proportional-integral-derivative" control feature that allows it to accurately adjust the parameters of a system based on changes in the system's process variables. It has 4 selectable input/output types such as universal 4-20mA, 0-10V, 0-20mA and a selection of universal digital signals. This process controller is approved for hazardous locations with its ATEX, IECEx, UL, CSA and EAC ratings.