Primarily intended for use in refrigeration display cabinets, coldroom or walk-in storage applications, the new Mercury Mk3 Stepper controller is now available. It is designed to control an evaporator stepper valve, based on the value of its temperature and/or pressure inputs.
Including an analogue 4-20mA or 0-10v input to facilitate direct connection of a pressure transducer for superheat measurement, two-volt free digital inputs which can be configured as a plant fault, case off switch, temperature range switch, manual defrost, valve shut or in coldroom variants, door status switch and person trapped signals. Additional outputs can be used for the control of lights, fans, suction valve, trim heaters and defrost control.
Optional integrated networking options allow users to connect the Mercury Mk3 Stepper Controller directly to a network without the need for an additional interface module. Integrated connectivity options include Ethernet IP or RS232.