BACnet Product Overview

Transcription

1 BACnet Product Overview

2 Comfort and energy-saving of a HVAC system are all about control. With networking devices, you can monitor and control your equipment via a communication system anywhere and anytime Control = Green + Comfort A Communication Protocol for HVAC BACnet - A Data Communication Protocol for Building Automation and Control Networks. Developed under the auspices of the American Society of Heating, Refrigerating and Air- Conditioning Engineers (ASHRAE) BACnet is an American national standard, a European standard, a national standard in more than 30 countries, and an ISO global standard. The protocol is supported and maintained by ASHRAE Standing Standard Project Committee 135 Protocol maintained by Building-Service Experts 1 SSPC Is charged with the maintenance and enhancement of an ASHRAE standard where it has been determined that a group of experts needs to be available to answer questions, and, in general, maintain a standard after it has been promulgated

3 NT800 / NT900 networking room thermostats are BACnet Master-Slave/ Token-Passing (MS/TP) networked devices designed in strict accordance with ASHRAE standard and are considered native BACnet devices NT800 / NT900 Networking Thermostats Preloaded Fan Coil Control program N N Obtained Multiple Certifications NT800/NT900 thermostats have obtained CE and C-tick certifications 2

4 NT800 Stylish appearance with Large illuminated LCD NT800 BACnet thermostat is designed in way of stylishness and effectiveness of which comprises easy-to-use LCD, rotary dial buttons and remote controllers. The faceplate is available in white and grey colors. Easy Buttons & Rotary Dial Easy to Mount with standard electrical box 3

5 NT900 Sophisticated appearance with Touch-screen LCD Easy-to-operate Touch icons NT900 BACnet thermostat is designed in way of stylishness and effectiveness of which features a large size Touchscreen LCD. LCD is available in vertical and horizontal versions Easy wiring with Pluggable terminal blocks 4

6 NT821 2-wire on-off (2-pipe) NT822 2-wire on-off (4-pipe) NT821F 3-wire floating (2-pipe) NT821A 0-10 VDC (2-pipe) NT822A 0-10 VDC (4-pipe) White faceplate is available NT921 2-wire on-off (2-pipe) NT922 2-wire on-off (4-pipe) NT921F 3-wire floating (2-pipe) NT921A 0-10 VDC (2-pipe) NT922A 0-10 VDC (4-pipe) Vertical LCD is available Comprehensive & Convenient Features RS485 communication port 2-wire on/off, 3-wire floating or 0-10 VDC control High current output relays 5A (2A) Auto-seasonal changeover sensor Remote temp. sensor Optional remote controller Features Energy-saving mode Remote on-off control Thermostat On-off status interlock output Additional binary inputs Additional binary outputs Parameter setup manual Adjustable PI values 5

7 Network Architecture Workstation Web Browser System Integration Redundancy Ethernet BACnet IP DDC 1 DDC n-1 DDC n Topology The NT800 / NT900 BACnet MP/TP LCD Digital Fan Coil thermostats shall be daisy-chained through a RS-485 network in which the maximum number of networked devices shall be 32 per network segment or 64 networked devices per network trunk if repeaters are used. 6

8 FUSE SPUR UNIT BY ELECTRICAL SUB-CONTRACTOR MAIN TEE-OFF OF MAIN TEE-OFF OF EAD TO ROOMS PAD TO ROOMS BLOWER HEAT/COOL T CO 2 SENSOR MOTION DETECTOR WINDOW INTERLOCK CONTROL DO AO AI DI NT800 / NT900 Networking Thermostat Application 1. EAD and PAD damper interlocks with thermostat on-off status speed fan control with 230 VAC output relays 5. 2-wire on-off valve control with 230 VAC output relay 6. 2-pipe heating only / cooling only system control 7. Temperature sensor in return air duct 8. Winter / summer immersion temperature sensor 9. CO 2 sensor status 10. Motion detector activates unoccupied mode 11. Window switch activates remote on-off function 7

9 NT50 Modbus RTU LCD Thermostat ~ BMG-MR Gateway Module The NT50 Series RS485 Modbus RTU networking LCD Fan Coil applies communication technology of Modbus RTU master/slave protocol to monitor and supervise year around air conditioning units in commercial, industrial and residential Installation. Typical application includes the control of fan coil units, packaged terminal air conditioners and combination heating and cooling equipment, as part of the system that consists of two-way or three-way valve and a multi-speed line voltage fan. The maximum number of NT50 slaves in a Modbus RTU network is 32. The BMG Series is a BACnet network gateway module which routes communication traffic between network and Modbus RTU network. While the BMG (master) communicates on a RS-485 network at its NET1 communication port in protocol, it can support up to 32 units of NT10 or NT50 RS-485 networking room thermostats (slaves) on a RS-485 network at its NET2 communication port in Modbus RTU protocol. 8

10 NT50 Modbus RTU LCD Thermostat ~ BMG-MR Gateway Module To a Network Supervisor BMG BMG Network Configuration Network Notes: 1. Balanced cable is recommended 2. Ensure the cable is installed as a daisy chain from one device to the next (1,000 m maximum) and the shield is grounded at one single point of the network only. 3. A MS/TP terminator is installed on each end of each MS/TP network. 4. The maximum nodes per MS/TP network is 32 without a repeater. RS485 Modbus RTU Network Slaves NT50 NT50 NT50 NT50 9 Modbus RTU Network Notes: 1. Balance cable is recommended 2. Ensure the cable is installed as a daisy chain from one device to the next (1,000 m maximum) and the shield is grounded at one single point of the network only. 3. A MS/TP terminator is installed on each end of each or Modbus RTU network. 4. The maximum nodes per Modbus RTU network is 32

11 Other Products 10

12 Cyrus Valves and Controls Company Distributor: