M&M Refrigeration Inc. - Compressor and System Controls

Expanded Screw Compressor Product Line

M&M is widely recognized as the industry leader in microprocessor control of screw compressors and refrigeration systems. Now we’ve made the best compressor microprocessor control panel even better:

	Back-lighted display
	Real-time, animated graphic
	“At A Glance” technology alerts the user of problems by automatically displaying the active alarms/failures screen
	Increased ramp start features based on discharge pressure, motor amps and capacity allow for greater compressor control
	Comprehensive set of energy management features such as extensive setpoints, scheduling, ramp start and powerfail restart dramatically reduces operating cost
	Built-in open communications protocols include Allen Bradley DF1 and Mod Bus RT4
	Additional analog and digital channels are available to control sequencers, condensers, evaporators and more directly from the compressor panel; no additional panels or PC are required

Standard M&M Compressor Control Features

	four suction pressure set points
	eight set point changes per day
	seven different daily schedules
	operation log records all operating parameters every 30 seconds for the previous two hours
	trend log provides 255 sets of the same operating parameters at an operator-selected interval
	alarm & failure logs display the last 100 messages, irrespective of time of occurrence
	user logs display the last 50 user logins
	password security system: up to 10 users, with flexible levels of security assigned to each compressor function
	ramp loading for smooth start-up and loading of the compressor
	energy consumption data: instantaneous motor kW, demand kW, daily kWh, previous day kWh
	over 130 status, menu selections and data entre screens
	over 60 available alarm and failure messages