Energy Management System

The main purpose of the Energy Management System (EMS) is to control the operation of all or selected facility HVAC and lighting systems in an effort to optimize operation, thus greatly reducing energy cost.

With special features such as centralized, intelligent energy management and highly efficient and innovative energy saving functions, and the effective interaction of all system components and processes you will achieve significant cost and energy savings.

Both, HVAC and lighting control is executed to maintain or improve the comfort and quality of the building’s indoor environment.

Allied Energy, Inc. EMS is a highly cost effective solution that can be installed both as a retrofit or new installation.

Energy Efficiency Business Incentives (EEBI) offered by various utilities help offsetting the cost for purchasing, installing and commissioning the system.

Typical features

• Programmable Logic Controller (PLC) equipped with RS485 Modbus RTU and ModbusTCP network interface.
• Network compatible thermostats suitable to control a variety of HVAC systems.
• Network compatible occupancy or motion sensors in all or selected zones/areas.
• Retrofit of economizers to existing HVAC units providing free cooling.
• Network compatible CO2 sensors capable of measuring indoor environment.
• Remote temperature sensors in all or selected zones or areas.
• Lighting control panel allowing operation of all or selected light circuits according to a schedule or occupancy.
• Dimmable fluorescent ballasts and photosensors for lighting fixtures that benefit from daylight harvesting or that provide too much light for the task performed in this area.
• Graphical User Interface software for local and remote monitoring, maintenance and alarming.

Optional features

• Local Operator Terminal (Touchscreen) that allows monitoring and adjustment of EMS system parameters.
• Mains energy metering for electrical demand control. The building’s electrical demand can be controlled to maintain incoming utility power at or below a desired level by typically controlling operation of HVAC and lighting systems (non-critical load shedding). Thus, overall energy consumption can be lowered and costly peak demand charges can be avoided.
• Variable Air Volume (VAV) terminal or damper control in zones equipped with thermostats.
• Supply air control via Variable Frequency Drives (VFDs) that are Modbus capable. A static pressure sensor signal can be read directly into an analog input on the VFD. From there, the pressure signal is transmitted to the PLC via the Modbus network. This option typically applies to single or dual duct rooftop systems.