Low Voltage Terminal Strip (Tb1) - Carrier 48/50PD05 User Manual

Low Voltage Terminal Strip
(TB1)
This circuit board provides a connection point between the major
control boards and a majority of the field-installed accessories. (See
TERMINAL DISPLAY
LABEL NAME
1
2 IAQ
3
OAQ or
4
SP .RH
5 RM.OC
6
ENTH or
7
IAQ.S
8* EC.CP
9
10* EC.AP
R
Y1
Y2
W1
W2 HUM
G
C
X ALRM
FIRE
SHUTDOWN
FDWN
1
FIRE
SHUTDOWN FDWN
2
T55
SPT
1--- 2
T55
SPTO
2--- 3
FAN STATUS
1--- 2
LEN
CCN
* Refer to Third Party Control section for more information
Fig. 22 - - Low- -Voltage Terminal Board (LVTB)
Table 25 — Field Connection Terminal Strip
POINT DESCRIPTION
24 VDC Sensor Loop power
Indoor air quality sensor
Air quality & humidity sensor common
Outdoor air quality sensor or
Relative humidity sensor
Remote occupancy switch
Switch power (ENTH, RM.OC, IAQ.S)
Outdoor enthalpy switch, or
Indoor air quality switch
Economizer commanded position
actuator (when in digital control)
Economizer signal common
Economizer position feedback (when
in analog control)
24 VAC power
NOT USED
NOT USED
NOT USED
Space Humidity Switch
NOT USED
24 VAC common
Alarm output (normally open)
Fire shutdown switch 24 VAC output
Fire shutdown switch input
Space temperature (T55/56)
Space temperature offset (T56)
NOT USED
Local Equipment Network (LEN)
Carrier Comfort Network (CCN)
Fig. 22 and Table 25.) The circuit breakers for the low voltage
control transformers, interface connection for the Carrier Comfort
Network® (CCN) communication, and interface connection for the
Local Equipment Network (LEN) communications are also located
on the low voltage terminal strip.
SENSOR
TYPE OF I/O
LOCATION
24 VDC output
return/space 4--- 20 mA input
field installed 4--- 20 mA input
field installed 24 VAC input
24 VAC output
economizer, or
24 VAC input
return/space
economizer 2--- 10 VDC output
communication
economizer
2--- 10 VDC output
24 VAC output
space 24 VAC input
24 VAC output
24 VAC output
supply/return
supply/return
space 10k thermistor
space 10k thermistor
communication
communication
55
CONNECTION
PIN NUMBER
J10, 17
J10, 16
Ground J10, 15
J10, 14
J10, 13
J10, 11--- 12
J10, 9--- 10
J10, 6--- 8
Ground J10, 3--- 5
J10, 1--- 2
J11, 11--- 14
J11,10
J11, 9
J11, 7--- 8
J11, 6
J11, 5
J11, 2--- 4
J11, 1
switch input J12, 7
switch input J12, 6
J12, 4--- 5
J12, 3--- 4
J12, 1--- 2
J13, 1--- 3, 4--- 5
J13, 6--- 8, 4--- 5
C08660