The MR267 Current Loop Controller (CLC) option remotely controls a motorized potentiometer and/or rotary cam switch via 4-20mA current loop, 0-2.5V input or external potentiometer.
Motorized potentiometers (a.k.a. motor pot) and rotary cam switches are used in a variety of industrial automation and process control applications. The user-specified potentiometers provide absolute positional feedback information or function as a variable resistor in an analog control or bridge circuit. The motor pot provides a smooth uniform ramp throughout its timing cycle. Rotary limit switches are programmed (via cams) to electrically control events (or provide status) at pre-stages. A few common applications include ramping up the field current of a DC motor or controlling the start-up of a generator.
These products are available in a wide variety of configurations including number and type of pots (single or multiturn, 2-170 watts, wire wound or composite), number and type of cam switches (electromechanical or optical), cycle time (5 sec to 24 hours) and packaging (DIN rail mount, panel mount, open frame, light duty or NEMA 4/4X heavy duty enclosure). When the CLC option is specified, the MR267 control board, a MR267-dedicated rotational feedback pot and 12V DC motor are added to the configuration.
