13343F_e- PF-MR11.doc 14/11/10

Field Control Layer Device RF to MODBUS protocol interface

【Description】 PF-MR11 is a protocol converter designed to match AIRTEK company DFR Series fan coil unit controller. It can convert radio frequency communication information (Radio Frequency) to MODBUS RTU communication format, in order to achieve the purpose of the communication layer system integration. It has FCnet, MSnet and RFnet three kinds of network communication interface, can convert RFnet and DFR interconnected network information to the MODBUS RTU format. The FCnet network can communicate with either the upper WC-FB controller or the NVC, NFC, NFT, DSP, DST, human-machine interface on the MSnet network. Users through desktop computers, notebook computers, tablet computers or smart phones and other 3C devices, regardless of location, time limit for building air-conditioning fan groups and individual equipment for monitoring, configuration and control. Such as start and stop operation, temperature regulation, wind speed switching, booking on / off and other settings and to control, monitor and record the scene temperature, system operation, fan speed, alarm abnormal state.

 

【Features】 BACnet Application Specific Controller (B-ASC) class device. BACnet MS/TP RS-485 network port for connection central monitoring system. Has a 32-bit high efficient microcontroller (MCU) can operate stand alone. A FCnet port can be connected to the WC-FB or link to the central monitoring system, the user can operate and control the web

pages through a browser anytime, anywhere. The RFnet with a two-way communication channel that can be connected to 16 DFR radio frequency fan coil unit controller. A MSnet communication port, can connect NVC, NFC, NFT, DSP, DST and other dedicated fan coil unit control panel. An RS-232 communication interface, through AD-Linker, using hyper terminal program for device parameter changes. FCnet, MSnet, RFnet network communication indicator, can monitor network communication with sending and receiving states. Real-time clock, perform automatic network time synchronization, also accepted the network time correction. Convertible monitoring points such as start and stop the fan, air-conditioning mode, wind speed, interior and set temperature, time

and reservation switch, fire and temperature anomalies alerts.

【Specification】

Model FCnet port RF wireless network RF wireless channel DFR in the network

PF-MR11 1 1 16 16

Power Supply ：24VAC/VDC, 5VA.

Microprocessor ：32-bit high performance MCU, 20K RAM, 8K FRAM and 128K Flash memory.

FCnet Port ：MODBUS RTU RS-485 bus, communication speed 9,600bps, with 2500Vrms electrical isolated protection

and TVS ARRAY surge protection, up to 32 DFCs.

MSnet Port ：MODBUS RTU RS-485 bus, communication speed 9,600 / 19,200 / 38,400 bps adjustable, can connect to a

NVC, NFC, and NFT…group control panel.

RFnet Port ：RF wireless channel, Communication distance 100 meters (at barrier-free space), up to 16 DFR can be connected.

RF Channel No. Can be set from 0 to 15 of 16 channels, each channel can be connected to 16 DFR wireless modules.

Realtime clock ：Gold capacitor power redundancy, provide power failure within 48 hours the clock normal operation

Environment ：0～50℃, 20～90%RH.

Certification ：CE(EMC Directive 2004/108/EC).

 

13‐343‐F 

PF-MR11

【Installation & Wiring Instruction】 Do not fix in a vibrant, a radiant heat source, condensate water and a dusty place.  A solely transformer is required. Do not share power supply with another device.  Please use two cores AWG#22 shield twist wire for PF-MR11 wiring, remember that the network connecting must be the daisy

chain style and Jack Box or parallel connection are prohibited. Pay attention! Network wiring should keep the potential positive and negative polarity correct, otherwise it will cause the network doesn't work. 

Use four cores AWG#22 shield twist wire for MSnet network connection. In which, two wires are the power line of HMI.  All network wire must have independent EMT, and must keep distance with power line to avoid disturbance, as ensures network

communication quality good.  Do not connect exceed 32 devices (PF-MR11+DFC+DFR) at the FCnet network, when connect to WC-RB series controller.  More than one PF-MR11 on FCnet, it should be set to a different channel number, otherwise it will create a conflict cannot connect. In addition to setting the address and channel switching, the need to set the DFR number of switches to normal communications

operation, detailed instructions, please see the technical manual.    The FCnet port use master/slave transmission protocol and compatible with AIRTEK WC-FB series controller only, we do not

warrant communicating with other series or other brand model. Put 120ohm end resistor on both sides of the FCnet network to prevent weak signal. The MSnet port can connect an NVC, NFC or NFT series group control panel. User can use it to operate all DFR controllers on the

network. When PF-MR11 is configured in the control cabinets, please be sure to move the external antenna to the outside where can get a

good signal transmission. (Note: the antenna has a magnetic base; it can be directly adsorbed on the metal material).

【Network Architecture】 

Internet/WAN

CHANEL 0(d),UP TO 16 DFR.

RF

SCnet

FCnet(a) - Modbus RS485 bus, Up to 32 DFCs+DFRs(Total a+b+c+d+…), Max. length 1200 meter

SCnet

CHANEL 2, UP TO 16 DFR.

RF WirelessSCnet

WIFI

BACsoft

CHANEL 1, UP TO 16 DFR.

DFR0140A DFR0140A DFR0140A DFR0140A

DFR2150A DFR2150A DFR2150A

DFR0140A DFR2150ANFC32V

MFC32V MFC32V

NFC32V

DFC2150A DFC0140A

MFC32V

WC-FB11

RF

RF USB Module

NVP70PE

WC-FB13

FCnet max=(a+b+c+d+ )=32 (DFCs or DFRs)

WORKSTATIONWIFI AP

WEB BROWSER NOTE BOOK TABLET PC SMART PHONE

BACnet Web Embedded FCU Master Controller

BACnet Operator Display Pannel

BACnet Web Embedded FCU Master Controller

1.Wireless loop

2.Two-wire loop

3.Wireless loop

NGC32V

MFC32V

MFC32V

DFR0140A

DFR2150A

DFR0140A

PF-MR11

  

【Wiring Diagram】 

12

ON

34

DFR

Qua

ntity

Cha

nnel

E+D

-

D+ D

–

ON

1 2

3 4

ON

1 2

3 4

12

ON

34

AO

21

2 3

4 5

6 7

8

MA

C a

ddre

ss

V+V-

M+

M-

12

ON

34

56

78

12

ON

34

12

ON

34

12

ON

34

56

78

【Dimension】Unit：mm 

100 103 9927 22 103

Please refer to http://www.airtekgroup.com for the most resent update information.