Screw Compressor Controller Features  ·  Compressor Controller Options  ·  "Off The Shelf" (OTS) Control Systems
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COMPRESSOR CONTROL SYSTEMS (CCS)

Our CCS products provide control for all manufacturer’s compressors, both
screw and reciprocating.

Screw Compressors:

		Uses our common scalable hardware and software platform
		Real-time graphics display
		The same high quality unit that is utilized on our screw compressor product line can be retrofitted on all major manufacturer’s compressor products
		Can easily be customized and expanded if required to perform additional functions resulting in a cost-effective small system solution

Reciprocating Compressors:

		Smaller enclosure, display and keypad
		Same functionality as the screw compressor controller

Screw Compressor Controller Features

The M&M Compressor Control System is an advanced microcontroller that has been specifically developed to provide the industry’s most extensive compressor control flexibility and safety. It is easy to use with no prior computer knowledge being necessary.
All information is clearly presented on three types of display screens:

	Status screens, which provide continuously updated information regarding current compressor operating conditions
	Menu selection screens, which are used to access various data entry screens
	Data entry screens, where control, alarm and failure setpoints are observed and/or entered into the computer memory

Data entry is menu-driven in a format that guides the operator to make entries or changes. Each standard screw compressor micro has a minimum of 130 different screens.

The NEMA 4 control cabinet consists of a door-mounted keypad and display, a high efficiency universal power supply, a microcontroller main processing board, a digital input/output rack and a pre-numbered field wiring terminal strip. A battery with 10-year life is also provided to ensure that no data is lost during shutdown or temporary loss of power.

Compressor Controller Options

The expandable nature of the M&M Compressor Control System readily permits expansion to control other components of a refrigeration system. The controller can support up to 16 analog inputs, 4 analog outputs and 64 discrete I/O. With this added hardware additional refrigeration control needs can be handled, such as the following:

	Condenser Control
	Pump Package Control
	Evaporator Zone Control
	Vessel Control
	Surge Drum Control
	Other multi-task functions

"OFF THE SHELF" (OTS) CONTROL SYSTEMS

Our OTS Control System components are designed to meet the needs of small and medium facilities. These pre-configured units allow a facility to get control of their refrigeration and energy usage with minimal capital expense by offering the following features:

	Utilizes our common scalable hardware and software platform
	Contains all features of our customized control systems
	Can be configured by the end user to match their facility
	Designed to solve specific control requirements for small to medium sized facilities

OTS Components

Master Screw Compressor

		With sequencing for up to 8 compressors
		With condenser control (support for up to 4 Pumps, 8 Fans)
		With sequencing and condenser control

	Evaporator Controller (4, 8,12,16, 20 zone configurations)
	Condenser Controller
	Pump Package Controller
	Ice Rink Controller (single and dual rink)
	Beer Distribution Warehouse Controller (10/2 and 20/4 CEW/Draft configurations)

ENGINEERED CONTROL SYSTEMS (ERS)

Our modular design is also what makes the Microcontroller the “building block” for more extensive system control. For larger sites with several screw compressors and associated equipment, multiple Microcontrollers can be networked to form a fully customized Engineered Control System (ECS.) An ECS could consist of screw compressor Microcontrollers, one Master Microcontroller with keypad and display and perhaps one or more Remote Microcontrollers (no keypad or display.) Control of various refrigeration system components such as condensers, evaporators, refrigerant pumps, etc., can be housed in a single Microcontroller (either Master or Remote), in a wide range of combinations. These various configurations allow panels to be either centralized or distributed to minimize wiring cost during installation. The ECS is also expandable; as the refrigeration system grows, only additional Microcontrollers are needed. All data entries are made on the keypad of the Master Microcontroller or a Compressor Microcontroller. No personal computer is required for system control and monitoring. The ECS network provides the flexibility and capability of microprocessor control at a cost far lower than competitive PC-based control systems.

	Screw compressors		Surge drums
	Reciprocating compressors		Hydro-vac coolers
	Rotary compressors		Tunnel freezers
	Condensers		Double and single ice rink systems
	Pump packages		Leak detection systems
	Intercoolers		kW monitoring
	Evaporators		kW load shedding
	Chillers		Floor warming systems
	Spiral freezers		Exhaust fan control
	Purgers		King solenoids
	Scrape surface heat exchangers		All types of pressure, temperature, infrared, etc. sensor monitoring
	Ice machines

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©2007, M&M Refrigeration, Inc.