Carrier WeatherMaker 48TC 04, Руководство по установке

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Fig. 73 — Duct Relative Humidity Sensor Typical
Wiring
To wire in the field:
• J5-8 = 24 VAC source for dry contact
• J5-7 = Signal input
Smoke Detector/Fire Shutdown (FSD) — This control is in-
stalled on 48TC units equipped with factory-installed Smoke
Detector(s). The smoke detector controller implements the unit
shutdown through its NC contact set connected to the unit’s
CTB input. The FSD function is initiated via the smoke detec-
tor’s Alarm NO contact set. The RTU Open controller commu-
nicates the smoke detector’s tripped status to the BAS building
control. See Fig. 65 and 66, the RTU Open System Control
wiring schematics.
The Fire Shutdown Switch configuration, MENU>Con-
fig>Inputs>input 5, identifies the normally open status of this
input when there is no fire alarm.
Connecting Discrete Inputs
Filter Status — The filter status accessory is a field-
installed accessory. This accessory detects plugged filters.
When installing this accessory, the unit must be configured for
filter status by setting MENU>Config>Inputs>input 3, 5, 8, or
9 to Filter Status and normally open (N/O) or normally closed
(N/C). Input 8 or 9 is recommended for easy of installation. Re-
fer to Fig. 64-66 for wire terminations at J5.
Fan Status — The fan status accessory is a field-installed ac-
cessory. This accessory detects when the indoor fan is blowing
air. When installing this accessory, the unit must be configured
for fan status by setting MENU>Config>Inputs>input 3, 5, 8,
or 9 to Fan Status and normally open (N/O) or normally closed
(N/C). Input 8 or 9 is recommended for easy of installation. Re-
fer to Fig. 64 and Fig. 65 or 66 for wire terminations at J5.
Remote Occupancy — The remote occupancy accessory is a
field-installed accessory. This accessory overrides the unoccu-
pied mode and puts the unit in occupied mode. When installing
this accessory, the unit must be configured for remote occupan-
cy by setting MENU>Config>Inputs>input 3, 5, 8, or 9 to
Remote Occupancy and normally open (N/O) or normally
closed (N/C).
Also set MENU>Schedules>occupancy source to DI on/off.
Input 8 or 9 is recommended for easy of installation.
Refer to Fig. 64 and Table 30 for wire terminations at J5.
Power Exhaust (output) — The relay used by the RTU Open
board to control power exhaust is a dry contact which means it
does not have 24vac. This 24vac must be connected to the relay
to allow it to operate the power exhaust relay in the PE acces-
sory. A 24vac source must be provided to J11-2 on the RTU
Open control board. This can be provided by the unit’s trans-
former from various sources. The “R” terminal on the unit’s
low voltage terminal board (LVTB) is a logical source. Refer to
Fig. 64-66 for wire terminations at J11.
RTU OPEN COMMUNICATION WIRING PROTOCOLS
General — Protocols are the communication languages spoken
by control devices. The main purpose of a protocol is to com-
municate information in the most efficient method possible.
Different protocols exist to provide different kinds of informa-
tion for different applications. In the BAS application, many
different protocols are used, depending on manufacturer. Proto-
cols do not change the function of a controller; just make the
front end user different.
The RTU Open can be set to communicate on four different
protocols: BACnet, Modbus, N2, and LonWorks. Switch 3
(SW3) on the board is used to set protocol and baud rate.
Switches 1 and 2 (SW1 and SW2) are used to set the board’s
network address. See Fig. 74 and 75 for protocol switch set-
tings and address switches. The third party connection to the
RTU Open is through plug J19. See Fig. 76 for wiring.
NOTE: Power must be cycled after changing the SW1-3
switch settings.
Refer to the RTU Open v3 Integration Guide for more de-
tailed information on protocols third party wiring and network-
ing.
Fig. 74 — RTU Open SW3 Dip Switch Settings
SPAN
ZERO
4-20
mA
VAC
or
VDC
GND 0-5V
or
0-10V
1 2 3 4 5 6
ON
J4-1 or J4-4 + 24 VDC
SUPPLY VOLTAGE
J4-2 or J4-5 (-)4 to 20 mA Current
LOOP OUTPUT TO RTU OPEN
RELATIVE HUMIDITY SENSOR
(POLARIZED MALE CONNECTOR)
UNU S ED
(OFF)
(ON)
COMM
OPTION
PORT
S ET TO M S TP
(MA S TER)
S ET TO
38 .4k
BAUD
PROTOCOL S ELECTOR DIP S WITCHE S
Baud Rate Selection
BAUD RATE DS2 DS1
9,600 OFF OFF
19,200 ON OFF
38,400 OFF ON
76,800 ON ON
SW3 PROTOCOL SELECTION
LEGEND
NOTE: BACnet MS/TP SW3 example shown.
PROTOCOL DS8 DS7 DS6 DS5 DS4 DS3 DS2 DS1
BACnet MS/TP (Master) Unused OFF OFF OFF ON OFF Select Baud Select Baud
Modbus (Slave) Unused OFF OFF ON ON OFF Select Baud Select Baud
N2 Slave Unused OFF OFF OFF ON ON OFF OFF
LonWorks Unused ON ON OFF ON OFF OFF ON
DS — DIP Switch