Carrier 50TCQD Installation Instructions Manual page 33

Remote Occupancy
The remote occupancy accessory is a field- - installed
accessory. This accessory overrides the unoccupied mode
and puts the unit in occupied mode. When installing this
accessory, the unit must be configured for remote
occupancy by setting MENU
5, 8, or 9 to Remote Occupancy and normally open (N/O)
or normally closed (N/C).
Also set MENU Schedules
→
on/off. Input 8 or 9 is recommended for easy of
installation. Refer to Fig. 46 and Table 8 for wire
terminations at J5.
Power Exhaust (output)
Connect the accessory Power Exhaust contactor coil(s) per
Fig. 54.
Power Exhaust
PEC TAN
GRA
Fig. 54 - - RTU- - MP Power Exhaust Connections
Space Relative Humidity Sensor - - The RH sensor is not
used with 50TCQD models at this time.
PROTOCOL DS8
BACnet MS/TP
Unused
(Master)
Modbus
Unused
(Slave)
N2
Unused
(Slave)
LonWorks Unused
NOTE:
DS = Dip Switch
BACnet MS/TP SW3 example shown
Baud Rate Selections
BAUD RATE
9600
19,200
38,400
76,800
Config Inputs input 3,
→ → →
occupancy source to DI
→
J11-3
CTB
THERMOSTAT
C
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SW3 Protocol Selection
DS7 DS6
OFF OFF
OFF OFF
OFF OFF
ON ON
DS2 DS1
OFF OFF
ON OFF
OFF ON
ON ON
Fig. 55 - - RTU- - MP SW3 Dip Switch Settings
Communication Wiring - - Protocols
General
Protocols are the communication languages spoken by
control devices. The main purpose of a protocol is to
communicate information in the most efficient method
possible. Different protocols exist to provide different
kinds of information for different applications. In the BAS
application, many different protocols are used, depending
on manufacturer. Protocols do not change the function of
a controller; just make the front end user different.
The RTU- - MP 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 55 for the switch setting
per protocol. The 3rd party connection to the RTU- - MP is
through plug J19.
NOTE: Power must be cycled after changing the SW1- - 3
switch settings.
Refer to the RTU- - MP 3rd Party Integration Guide for
more detailed information on protocols, 3rd party wiring,
and networking.
DS5 DS4 DS3
OFF ON OFF
ON ON OFF
OFF ON ON
OFF ON OFF
33
DS2 DS1
Select Baud Select Baud
Select Baud Select Baud
OFF OFF
OFF OFF
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