Screw and Reciprocating Compressor controllers

The M&M Carnot compressor controller product line consists of hardened microprocessor panels specifically designed for the demands of industrial refrigeration. These controllers support everything required for proper energy-efficient control of your screw or recip compressor from most manufacturers. The compressor controllers make retrofitting older refrigeration compressor controls easy – all while increasing energy efficiency, reliability, maintainability, and functionality.

V4 Screw Compressor Micro Controller

• All information presented on a large display with an easy-to-use menu structure and real-time animated graphics
• Updates available using industrial-grade USB drive
• Utilizes Windows-based PC Enterprise platform with easy-to-use HMI interface
• Industry standard communications for integration with the outside world (Modbus RTU or TCP)
• Isolated RS-422 communications for connection to control network
• Multi-level security system with user tracking
• Designed to support future expansion

Reciprocating Compressor Micro Controller

• Designed to meet the needs and budget of any customer
• Extensive control flexibility, safety, security, and energy efficiency
• Information clearly presented on the compressor’s large LCD display
• Easy-to-use menu structure
• The NEMA 4-designed control cabinet consists of a door-mounted keypad and display, plus a high-efficiency universal power supply with a pre-numbered field wiring terminal strip
• Multi-level security system with user tracking
• Designed to support future expansion

 

Ice Rink

The standard ice rink control system covers single to multi-rink applications and includes controls for the refrigeration plant, subfloor warming, exhaust/ventilation systems, snow melt pumps, and lighting. Our Facility Planner Tool enables the rink operator to schedule floor temperatures and lighting for different activities up to a year in advance, taking all guesswork out of the operation.

• Reliable, long-life microprocessor-based control system
• Single or multi-rink operation
• Local LCD graphic display and keypad
• Local and remote access using PC Monitor Enterprise
• Detailed logging and alarm reporting
• Floor temperature monitoring via embedded or infrared temperature sensors
• Compressor sequencing for efficiency and energy conservation
• Condenser staging and Chiller control
• Compressor and jacket cooling pump control
• Ice temperature and lighting event scheduling
• Subfloor warming, snow melt pump, and exhaust fan control
• Optional facility interface using BACNet or Modbus

 

Industrial Split Packages

The single unit, split package control systems are off-the-shelf and can be field-configured for several options. A number of units can be connected to a PC Monitoring system with an Ethernet connection or serial connection, providing visualization at the floor level of your facility. Through PC Monitor Enterprise, room temperatures and evaporator/compressor status can be displayed and monitored. The zone control includes liquid feed runtime defrost, room temperature setpoint scheduling, fan cycling with temperature, and a fan-sampling feature that mixes room air to determine if cooling is required.

• Reliable, long-life, microprocessor-based control system
• Single unit control with up to two fans
• Compressor monitoring and safeties
• Automated temperature scheduling
• Detailed logging for sensors, alarms, and failures
• Optional local LCD graphic display and keypad
• Local and remote access using PC Monitor Enterprise
• Energy-efficient defrost methods and scheduling
• A defrost queue limits multiple zones in defrost at same time
• Air unit fan cycling based on temperature
• Room fan sampling to avoid operation when not required
• Power failure restart sequencing
• Support for peak load shedding and scheduled load shifting