Carrier 50TCQD, Руководство по установке

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50
RTU Open Controller System
The RTU Open controller is factory--mounted in the
50TCQ unit’s main control box, to the left of the CTB.
See Fig. 66. Factory wiring is completed through
harnesses connected to the CTB. Field connections for
RTU Open controller sensors will be made at the PCB
connectors on the RTU Open board. The factory--installed
RTU Open controller includes the supply--air temperature
(SAT) sensor. The outdoor air temperature (OAT) sensor is
included in the FIOP/accessory EconoMi$er
R
2 package.
The RTU Open controller is an integrated component of
the Carrier rooftop unit. Its internal application
programming provides optimum performance and energy
efficiency. RTU Open controller enables the unit to run in
100% stand--alone control mode, Carrier’s i--Vu
R
Open
network, or a Third Party Building Automation System
(BAS). On--board DIP switches allow you to select your
protocol (and baud rate) of choice among the four most
popular protocols in use today: BACnet*, Modbus
{
,
Johnson N2 and LonWorks**. (See Fig. 65.)
Refer to Table 27, RTU Open Controller Inputs and
Outputs for locations of all connections to the RTU Open
controller board.
NOTE : The RTU Open controller acts as an intelligent
imbedded thermostat. A room thermostat cannot be used
with the RTU Open controller.
J4
J2 J1
J5 J5
J22
J17
J19
J14
J11
J22
J3
J13
J12
J15
J20
Network Comm
Configurable - Input_8
24 V
A
C
Configurable - Input_5
24 V
A
C
Configurable - Input_3
24 V
A
C
Input_9 (Humidistat)
24 V
A
C
24 V
A
C
Input _8 (Enthalpy)
AO-1 (ECON)
Gnd
(OA
T
)
Gnd
(SA
T)
Input_5 (SMK) Input_4
(R)
BO-5
(Y1)
BO-4
(Y2)
BO-3
(W1)
BO-2
(W2)
BO-1
(G)
Gnd Input_3
(X)
24 V
AC IN
+24 VDC
Input_2 (CO2/RH)
Gnd
+24 VDC
Input_1 (CO2/RH)
Gnd
Board Power
(AO-1)
0-10VDC
4-20mA
BO-6
(H) Humidimizer
BO-7
(Reversing Valve/High Speed Fan/Y3)
BO-8
(Power Exhaust)
LonWorks
Option Card
Port
Example set for
BACnet MS/TP
and 76.8K baud
(1, 2, and 4 ON)
Recommended for all
i-Vu Open installations
Protocol Selector SPT (temp input) BACnet, Modbus, or N2
(LON connection J15)
SPT (common)
SPT (offset input)
*Remove
both for 0-5V
AO-2
GND
(2-10V)
3-Volt
Lithium
Battery
BO-1 BO-2 BO-3 BO-4 BO-5
BO-6
BO-7
BO-8
VFD Output
C14129
Fig. 65 -- RTU Open Multi--Protocol Control Board
* BACnet is a registered trademark of ASHRAE (American Society of
Heating, Refrigerating and Air---Conditioning Engineers).
{
Modbus is a registered trademark of Schneider Electric.
** LonWorks is a registered trademark of Echelon Corporation.