13706B_e- DFC...D.doc 14/11/05

Field Control Layer Device

RS485 Networking DC inverter FCU Controller

【Description】 DFC..D series networking fan coil unit controller is a

multi-function, high performance, independents operate the controller, Through the two-wire RS485 communication transmission, it can be connected up to 32 nos. of DFC controllers, together with a group of control panel or a protocol converter connected, form a local area network. By a remote or local browser or through a group control panel, can perform group or single unit control and monitoring. For control function, it includes temperature control, fan speed control, timer Off, schedule On/Off. For monitoring functions, it includes: field temperature value, system operation status, fan speed situation, running time accumulated, energy consumption, fault alarm. DFC.. Series controller suitable for use in which need centralized management and Independent control of decentralized occasions, such as office building, five-star hotel or restaurants, big shopping centers, science and technology building, academic research institutions and production plants, etc.

【Features】 High performance microprocessor and FLASH power failure memory function. Operates independently. Build in self wakeup function (Watch Dog) when system down. One FCnet port can connect to a BACnet web embedded F.C.U. Controller to perform centralized management and control。 A SCnet port can be connected to a MFC32V、MFT28U as an independent control, or cascading into a sub-network connected to a

NFC32V、NFTC28U centralized control of a small region. 2 PWM outputs, can match with DC current inverter motor for speed control or manual 5 speed control. Single module can maximum control

two set of motor. 2 digital inputs, dry contact are acceptable, can be connected to a motion detector, key card etc. to monitor status. Adopt return air temperature control, temperature control function does not affect by the position of control panel installed. 2 digital outputs, can provide two piping (cold or heat), four pipes (heating /cooling), or two piping + interlocking control point. Possess fully automatic, cooling, heating, fan, energy saving modes. Automatic synchronization with network time, acceptable time correction from central monitoring of the network so that all the system's

controller timer will be synchronies when the building automation system connected. Can be linked to the building automation system, to monitor points, fans start and stop status, air conditioning mode, wind speed, room and

set temperature, timer on or off, leakage, fire and abnormal temperature alarm, etc., and in living memory when the controller is powered down parameters, in reply to normal power supply, controller restarts in accordance to data memory. Automatic recovery after power failure function. Controllers will restart one by one according address number if it is in running status before power failure.

【Specification】

Model Mode Fan speed BI AI PI BO PO Heating/Cooling Description

DFC0110D Cool/Heat/Fan Auto/Manual 5 speed 0 1 2 1 2 Manual 2-piping(heating or cooling)

DFC2120D Auto/Coo/Heat/Fan Auto/Manual 5 speed 2 1 2 2 2 Manual/Auto 2-piping+Interlock or 4- piping

Power Supply : 85∼265VAC, 50/60Hz, 5VA(A 5A fuse inside)

Microprocessor : High speed processor

FCnet Port : 2 wire MODBUS RTU standard RS-485 communication, network distance up to 1200 meters.

SCnet Port : 2 wire MODBUS RTU standard RS-485 communication, network distance up to 1200 meters.

Binary Input (BI) : 2 digit input, 12VDC detects, dry contact or open collector is acceptable. (Only available for DFC2120D)

Analog Input (AI) : An external 10KΩ (25) NTC temperature sensor, sensing Range 0∼50 .

Pulse Input(PI) PWM(Pulse Width Modulation) input, monitor fan coil operates status.

Pulse Output (PO) : PWM(Pulse Width Modulation) output, control fan speed, manual 5 speed or auto speed.

Binary Output (BO) : UL/ CUL/ TUV certification 7A/NO, 5A/NC, 250VAC, SPDT for 2 or 3 wiring valve control or interlocking to control

: other equipment (Note: only available for DFC2120D)

Range : 15~30, accuracy ± 1

Certification : CE (EMC Directive 2004/108/EC) Environment : 0~50, 20~90%RH non-condensing

13-706-B

DFC....D

【Installation】 When the power supply and FCU uses the same power source, make sure the voltage is correct. Power supply cable and electric valve control cable

should be between 0.5 ~ 1.25mm2. Control cable diameter too big may cause damage to the terminal block. Too small the diameter, may not be able to carry the current device.

PWM inverter FCU control cable, no. of FCU will distribute in according to model no. wiring diagram will be provided by the inverter manufacture and wiring needed to follow accordingly.

Please use two cores AWG#22 shield twisted pair wire for MODBUS network wiring, 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.

DFC can be applied to 2-piping, 4-piping fan coil and direct expansion air-conditioning machine control applications, different model of control functions to be set within DFC internal parameters, please refer to the technical manual.

Use four cores AWG # 22 shield twisted pair wire as network cable to connect between NFC32V and DFC controller, in which two cores is act as the NFC32V power cord.

All network wire must have independent EMT, and must keep distance with power line to avoid disturbance, as ensures network communication in good quality..

DFC provides two or three positions motorized valve control function, when use in two position valve control occasion just connects to OPEN terminal leave CLOSE terminal alone.

Digital input points must be dry contact, such as the use of motion, detect sensor devices require an external power supply, please provide it own power source.

Control valve and the fan coil unit common point grounding should be connected to the same power source earth grounding; the wrong wiring will not operate properly.

DFC factory preset 5A fuse, When the control is greater than the capacity of electrical equipment, it should require an addition, auxiliary Relay, otherwise it may cause the fuse burned

【Network Architecture】

Figure 1. Less than 32 sets FCU local control network diagram

Figure 2. Less than 32 sets FCU internet control network diagram

BA

Cn

et E

TH

ER

NE

T/I

P 1

00M

bp

s

FC

ne

t(c) -M

od

bu

s R

S485

bu

s

FC

ne

t(b) -

Mo

db

us

RS

485 b

us

Figure 3. Less than 96 sets FCU internet control network diagram

BA

Cn

et E

TH

ER

NE

T/IP

100

Mb

ps

Internet/WAN

SCnet

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

FC

ne

t(c) -M

od

bu

s RS

485 b

us

WIFI

WIFI AP

NFC32V

NGC32V NGC32V

MFC32V

MFC32V

DFC2150A DFC0140A

DFC2150A

DFC2150A

3.Wire network

WEB BROWSER NOTE BOOK TABLET PC SMART PHONE

BACsoft

WORKSTATION

1.Wire network

FC

net(b

) -M

od

bu

s RS

485 bu

s

MFC32V

MFC32V

DFC0140A

DFC0140A

2.Wire network

BACnet

PF-BM12/15

Modbus to BACnet Ethernet FCU

PF-BM12/15

WC-RB10

DFC0140A DFC2150A

Figure 4. More than 96 sets FCU internet control network diagram

【Wiring Diagrams】

F- F+ F- F+

V- M- M+ V+

G Y B R

Operation Panel

To previousDFC

MFC

F- F+ F- F+

SCnet

To nextDFC

Address Setting (DIP)

FCnet

ON

OFF ON※ ID Range 1~32

1 2 3 4 5 6

1 2 4 8 16 32+ + + + + +

2 167

Ice water Valve

Power Supply110 220VAC

50/60Hz

PWMFancoil Inverter

NO.1

PWMFancoil Inverter

NO.2

J44J43

PWMOutputPWMSpeed

Feedback

PWM_HPWM_LFG_HFG_L

RYOBL

Figure 5 . DFC0110D wiring diagram

Figure 6. DFC2150D two piping system wiring diagram

Figure 7. DFC2150D four piping system wiring diagram

【Dimension】Unit: mm

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